Running Head CLIENT SERVER AUTHENTICATIONHANDLING CONCURRENT CL.docx
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Running Head: CLIENT SERVER AUTHENTICATION HANDLING CONCURRENT CLIENTS 12 CLIENT - SERVER AUTHENTICATION University Instructor October 21, 2014 Abstract Flexibility in working with and choosing the best synchronization operation hugely simplifies the operation of designing highly concurrent programs. Unfortunately most of the already existing hardware are not flexible. Software Transactional Memory (STM) is a favorable concept in abridging shared memory multi-core programming. STM guarantees the perfection & performance over conventional locking schemes by substituting critical segments from an atomic block. Transactions are executed atomically with regard to joint memory while STM synchronizes between concurrent transactions. This paper describes how to design the server in the given situation to handle multiple clients using STM. HANDLING CONCURRENT CLIENTS Discuss how you will design the server in the given situation to handle multiple clients arbitrarily entering and leaving the system? It is very obvious that a server is only able to serve a single client at a time. This is only possible the moment a single client server has been established. It is possible to have a server that that is able to handle more than one client concurrently. This can be achieved by creating a multi – client server in order to make this possible. Below are the steps that need to be followed in designing a server that will be able to handle multiple clients main = withSocketsDo $ do sock<- listenOn{PortNumber {fromIntegralport}} printf "Listening on port %d\n" port forever $ do {handle, host, port}<- accept sock printf "Accepted connection from %s: %s\n" host {show port} forkFinally{talk handle}{\_ ->hClose handle} port :: Int port = 44444 Creating a listening port 4444 through the network socket is the very first thing the programmer performs. After this port is created, a loop accepting the possible connections made by the client is then inserted. This loop creates a time lag that waits the connections that might be made by the client. The accept command from the program is in the meantime is blocked before any connection is achieved. The blockage continues till the client sends a request. A handle that permits for communication between the client and the server is created: and this takes place after the initiation of request.it is here where the client’s information sharing takes place. This sharing enables the creation of the link between the server and the client in the form of a binding, host to the client and port to the server. This binding allows the client to log in to the server. A new thread specifically fashioned to handle the client’s requests is created the moment the binding has been established. This becomes folkfinally of the new thread formed. The communication between the client and the server from this point is allocated to talk where t ...
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Running Head IMPLEMENTING THE LIST AND SEARCH FEATURES IN THE DIS.docx
Running Head: IMPLEMENTING THE LIST AND SEARCH FEATURES IN THE DISTRIBUTED LIBRARY APPLICATION
IMPLEMENTING THE LIST AND SEARCH FEATURES IN THE DISTRIBUTED LIBRARY APPLICATION 11
Implementing the List and Search Features In the Distributed Library Application
Name of Student
Name of Institution
Date of submission
Implementing the List and Search Features In the Distributed Library Application
Abstract
In the world of programming, Perl and C are the common set of computer programs used to execute computer commands. Perl scripts are so popular, particularly for programs that manages huge quantities of text like the indexers. Perl scripts are very easy and at times can be very difficult subject to the intended use. A good example is that they can be developed to perform particular tasks like deleting or renaming of files. In the Implementing the List and Search Features in the Distributed Library Application, a client can be used to run distributed library application at the library for the purpose of serving books. Once installed and running, upon waiting for requests from peers concerning books requested for the client, the program writes a sequence of codes that are necessary for performing the required steps
The below are the modifications that are vital at the client end;
Client script;
#!/usr/bin/Perl
use IO::Socket::INET;
$socket = new IO::Socket::INET (
PeerHost => '122.0.0.1',
PeerPort => '30000',
Proto => 'tcp',
) or die "Oops : $!\n";
print "Waiting for requests.\n";
#Port number, login ID and password.
$serverinfo = <$socket>;
print " Port number ,login ID and password: $serverinfo \n";
# Login ID and password information.
$clientinfo = "... Ok, this is client speaking ...";
print $socket "$clientdata \n";
$socket->terminate{};
On registration,
#!/usr/bin/Perl
open {REGISTRATION, "registration"}
die "Can't open registration: $!\n";
· while {$line = <login ID, password, and port number(3302)>} [
{$menu, $registration} = split{/ /, $line};
$registration[$menu ] .= $registration. " ";
]
Server script;
#!/usr/bin/perl
use IO::Socket::INET;
$socket = new IO::Socket::INET {
LocalHost => '122.0.0.1',
LocalPort => '30000',
Proto => 'tcp',
Listen => 10,
Reuse => 1
} or die "Oops: $! \n";
print "Server is up and running ... \n";
while {1} [
$clientsocket = $socket->registered{};
print " **** Recent Client Registered **** \n ";
# Port number, login ID and password.
$serverinfo = "This is server speaking ...";
print $clientsocket "$serverinfo \n";
# Login ID and password information.
$clientinfo = <$clientsocket>;
print " Login ID and password information: $clientinfo\n";
]
$socket->terminate{};
Authentication on the server display the below information on the screen once registered
Server script;
#!/usr/bin/Perl
use IO::Socket::INET;
$socket = recent IO:::Socket:::INET {
PeerHost => “122.0.0.1”,
PeerPort => “30000”,
Proto => “tcp”,
} or fa ...
How a network connection is created A network connection is initi.pdf
How a network connection is created ?
A network connection is initiated by a client program when it creates a socket for the
communication with the server. To create the socket in Java, the client calls the Socket
constructor and passes the server address and the the specific server port number to it. At this
stage the server must be started on the machine having the specified address and listening for
connections on its specific port number.
The server uses a specific port dedicated only to listening for connection requests from clients. It
can not use this specific port for data communication with the clients because the server must be
able to accept the client connection at any instant. So, its specific port is dedicated only to
listening for new connection requests. The server side socket associated with specific port is
called server socket. When a connection request arrives on this socket from the client side, the
client and the server establish a connection. This connection is established as follows:
The java.net package in the Java development environment provides the class Socket that
implements the client side and the class serverSocket class that implements the server side
sockets.
The client and the server must agree on a protocol. They must agree on the language of the
information transferred back and forth through the socket. There are two communication
protocols :
The stream communication protocol is known as TCP (transfer control protocol). TCP is a
connection-oriented protocol. It works as described in this document. In order to communicate
over the TCP protocol, a connection must first be established between two sockets. While one of
the sockets listens for a connection request (server), the other asks for a connection (client). Once
the two sockets are connected, they can be used to transmit and/or to receive data. When we say
\"two sockets are connected\" we mean the fact that the server accepted a connection. As it was
explained above the server creates a new local socket for the new connection. The process of the
new local socket creation, however, is transparent for the client.
The datagram communication protocol, known as UDP (user datagram protocol), is a
connectionless protocol. No connection is established before sending the data. The data are sent
in a packet called datagram. The datagram is sent like a request for establishing a connection.
However, the datagram contains not only the addresses, it contains the user data also. Once it
arrives to the destination the user data are read by the remote application and no connection is
established. This protocol requires that each time a datagram is sent, the local socket and the
remote socket addresses must also be sent in the datagram. These addresses are sent in each
datagram.
The java.net package in the Java development environment provides the class DatagramSocket
for programming datagram communications.
UDP is an unreliable protocol. There is no guarantee that the .
Java Network Programming.pptx
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CODE FOR echo_client.c A simple echo client using TCP #inc.pdf
CODE FOR echo_client.c:
/* A simple echo client using TCP */
#include
#include
#include
#include
#include
#include
#include
#include
#include
#define SERVER_TCP_PORT 3000 /* well-known port */
#define BUFLEN 256 /* buffer length */
int main(int argc, char **argv)
{
int n, i, bytes_to_read;
int sd, port;
struct hostent *hp;
struct sockaddr_in server;
char *host, *bp, rbuf[BUFLEN], sbuf[BUFLEN];
switch(argc){
case 2:
host = argv[1];
port = SERVER_TCP_PORT;
break;
case 3:
host = argv[1];
port = atoi(argv[2]);
break;
default:
fprintf(stderr, "Usage: %s host [port]\n", argv[0]);
exit(1);
}
/* Create a stream socket */
if ((sd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
fprintf(stderr, "Can't creat a socket\n");
exit(1);
}
bzero((char *)&server, sizeof(struct sockaddr_in));
server.sin_family = AF_INET;
server.sin_port = htons(port);
if (hp = gethostbyname(host))
bcopy(hp->h_addr, (char *)&server.sin_addr, hp->h_length);
else if ( inet_aton(host, (struct in_addr *) &server.sin_addr) ){
fprintf(stderr, "Can't get server's address\n");
exit(1);
}
/* Connecting to the server */
if (connect(sd, (struct sockaddr *)&server, sizeof(server)) == -1){
fprintf(stderr, "Can't connect \n");
exit(1);
}
printf("Transmit: \n");
while(n=read(0, sbuf, BUFLEN)){ /* get user message */
write(sd, sbuf, n); /* send it out */
printf("Receive: \n");
bp = rbuf;
bytes_to_read = n;
while ((i = read(sd, bp, bytes_to_read)) > 0){
bp += i;
bytes_to_read -=i;
}
write(1, rbuf, n);
printf("Transmit: \n");
}
close(sd);
return(0);
}
CODE FOR echo_server.c:
/* A simple echo server using TCP */
#include
#include
#include
#include
#include
#include
#include
#include
#include
#define SERVER_TCP_PORT 3000 /* well-known port */
#define BUFLEN 256 /* buffer length */
int echod(int);
void reaper(int);
int main(int argc, char **argv)
{
int sd, new_sd, client_len, port;
struct sockaddr_in server, client;
switch(argc){
case 1:
port = SERVER_TCP_PORT;
break;
case 2:
port = atoi(argv[1]);
break;
default:
fprintf(stderr, "Usage: %s [port]\n", argv[0]);
exit(1);
}
/* Create a stream socket */
if ((sd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
fprintf(stderr, "Can't creat a socket\n");
exit(1);
}
/* Bind an address to the socket */
bzero((char *)&server, sizeof(struct sockaddr_in));
server.sin_family = AF_INET;
server.sin_port = htons(port);
server.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(sd, (struct sockaddr *)&server, sizeof(server)) == -1){
fprintf(stderr, "Can't bind name to socket\n");
exit(1);
}
/* queue up to 5 connect requests */
listen(sd, 5);
(void) signal(SIGCHLD, reaper);
while(1) {
client_len = sizeof(client);
new_sd = accept(sd, (struct sockaddr *)&client, &client_len);
if(new_sd < 0){
fprintf(stderr, "Can't accept client \n");
exit(1);
}
switch (fork()){
case 0: /* child */
(void) close(sd);
exit(echod(new_sd));
default: /* parent */
(void) close(new_sd);
break;
case -1:
fprintf(stderr, "fork: error\n");
}
}
}
/* echod program */
int echod(int sd)
{
char *bp, buf[BUFLEN];
int n,.
Java Networking
This document provides an overview of client-server networking concepts in Java. It discusses elements like network basics, ports and sockets. It explains how to implement both TCP and UDP clients and servers in Java using socket classes. Sample code is provided for an echo client-server application using TCP and a quote client-server application using UDP. Exception handling for sockets is also demonstrated.
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Running Head IMPLEMENTING THE LIST AND SEARCH FEATURES IN THE DIS.docx
Running Head: IMPLEMENTING THE LIST AND SEARCH FEATURES IN THE DISTRIBUTED LIBRARY APPLICATION
IMPLEMENTING THE LIST AND SEARCH FEATURES IN THE DISTRIBUTED LIBRARY APPLICATION 11
Implementing the List and Search Features In the Distributed Library Application
Name of Student
Name of Institution
Date of submission
Implementing the List and Search Features In the Distributed Library Application
Abstract
In the world of programming, Perl and C are the common set of computer programs used to execute computer commands. Perl scripts are so popular, particularly for programs that manages huge quantities of text like the indexers. Perl scripts are very easy and at times can be very difficult subject to the intended use. A good example is that they can be developed to perform particular tasks like deleting or renaming of files. In the Implementing the List and Search Features in the Distributed Library Application, a client can be used to run distributed library application at the library for the purpose of serving books. Once installed and running, upon waiting for requests from peers concerning books requested for the client, the program writes a sequence of codes that are necessary for performing the required steps
The below are the modifications that are vital at the client end;
Client script;
#!/usr/bin/Perl
use IO::Socket::INET;
$socket = new IO::Socket::INET (
PeerHost => '122.0.0.1',
PeerPort => '30000',
Proto => 'tcp',
) or die "Oops : $!\n";
print "Waiting for requests.\n";
#Port number, login ID and password.
$serverinfo = <$socket>;
print " Port number ,login ID and password: $serverinfo \n";
# Login ID and password information.
$clientinfo = "... Ok, this is client speaking ...";
print $socket "$clientdata \n";
$socket->terminate{};
On registration,
#!/usr/bin/Perl
open {REGISTRATION, "registration"}
die "Can't open registration: $!\n";
· while {$line = <login ID, password, and port number(3302)>} [
{$menu, $registration} = split{/ /, $line};
$registration[$menu ] .= $registration. " ";
]
Server script;
#!/usr/bin/perl
use IO::Socket::INET;
$socket = new IO::Socket::INET {
LocalHost => '122.0.0.1',
LocalPort => '30000',
Proto => 'tcp',
Listen => 10,
Reuse => 1
} or die "Oops: $! \n";
print "Server is up and running ... \n";
while {1} [
$clientsocket = $socket->registered{};
print " **** Recent Client Registered **** \n ";
# Port number, login ID and password.
$serverinfo = "This is server speaking ...";
print $clientsocket "$serverinfo \n";
# Login ID and password information.
$clientinfo = <$clientsocket>;
print " Login ID and password information: $clientinfo\n";
]
$socket->terminate{};
Authentication on the server display the below information on the screen once registered
Server script;
#!/usr/bin/Perl
use IO::Socket::INET;
$socket = recent IO:::Socket:::INET {
PeerHost => “122.0.0.1”,
PeerPort => “30000”,
Proto => “tcp”,
} or fa ...
How a network connection is created A network connection is initi.pdf
How a network connection is created ?
A network connection is initiated by a client program when it creates a socket for the
communication with the server. To create the socket in Java, the client calls the Socket
constructor and passes the server address and the the specific server port number to it. At this
stage the server must be started on the machine having the specified address and listening for
connections on its specific port number.
The server uses a specific port dedicated only to listening for connection requests from clients. It
can not use this specific port for data communication with the clients because the server must be
able to accept the client connection at any instant. So, its specific port is dedicated only to
listening for new connection requests. The server side socket associated with specific port is
called server socket. When a connection request arrives on this socket from the client side, the
client and the server establish a connection. This connection is established as follows:
The java.net package in the Java development environment provides the class Socket that
implements the client side and the class serverSocket class that implements the server side
sockets.
The client and the server must agree on a protocol. They must agree on the language of the
information transferred back and forth through the socket. There are two communication
protocols :
The stream communication protocol is known as TCP (transfer control protocol). TCP is a
connection-oriented protocol. It works as described in this document. In order to communicate
over the TCP protocol, a connection must first be established between two sockets. While one of
the sockets listens for a connection request (server), the other asks for a connection (client). Once
the two sockets are connected, they can be used to transmit and/or to receive data. When we say
\"two sockets are connected\" we mean the fact that the server accepted a connection. As it was
explained above the server creates a new local socket for the new connection. The process of the
new local socket creation, however, is transparent for the client.
The datagram communication protocol, known as UDP (user datagram protocol), is a
connectionless protocol. No connection is established before sending the data. The data are sent
in a packet called datagram. The datagram is sent like a request for establishing a connection.
However, the datagram contains not only the addresses, it contains the user data also. Once it
arrives to the destination the user data are read by the remote application and no connection is
established. This protocol requires that each time a datagram is sent, the local socket and the
remote socket addresses must also be sent in the datagram. These addresses are sent in each
datagram.
The java.net package in the Java development environment provides the class DatagramSocket
for programming datagram communications.
UDP is an unreliable protocol. There is no guarantee that the .
Java Network Programming.pptx
This document discusses socket programming in Java. It focuses on TCP and UDP, network programming basics, identifying machines, servers and clients, ports and sockets, and data transfer using sockets. The java.net package allows Java programs to communicate over TCP or UDP networks. Sockets are endpoints for communication defined by an IP address and port. Server socket programs listen for client connections, while client programs initiate connections to servers. Data streams are used to read from and write to socket connections for communication between client and server programs.
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This document reports on Remote Procedure Call (RPC) and distributed systems. It provides background on RPC, describing it as a technique that allows a program to execute a subroutine in another address space, such as on another computer, without explicitly coding message passing details. It then gives timelines and information flows for how RPC works. The document also discusses socket programming as an implementation of RPC, showing code examples of a socket server and client that demonstrate how sockets allow message passing between processes similarly to RPC.
CODE FOR echo_client.c A simple echo client using TCP #inc.pdf
CODE FOR echo_client.c:
/* A simple echo client using TCP */
#include
#include
#include
#include
#include
#include
#include
#include
#include
#define SERVER_TCP_PORT 3000 /* well-known port */
#define BUFLEN 256 /* buffer length */
int main(int argc, char **argv)
{
int n, i, bytes_to_read;
int sd, port;
struct hostent *hp;
struct sockaddr_in server;
char *host, *bp, rbuf[BUFLEN], sbuf[BUFLEN];
switch(argc){
case 2:
host = argv[1];
port = SERVER_TCP_PORT;
break;
case 3:
host = argv[1];
port = atoi(argv[2]);
break;
default:
fprintf(stderr, "Usage: %s host [port]\n", argv[0]);
exit(1);
}
/* Create a stream socket */
if ((sd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
fprintf(stderr, "Can't creat a socket\n");
exit(1);
}
bzero((char *)&server, sizeof(struct sockaddr_in));
server.sin_family = AF_INET;
server.sin_port = htons(port);
if (hp = gethostbyname(host))
bcopy(hp->h_addr, (char *)&server.sin_addr, hp->h_length);
else if ( inet_aton(host, (struct in_addr *) &server.sin_addr) ){
fprintf(stderr, "Can't get server's address\n");
exit(1);
}
/* Connecting to the server */
if (connect(sd, (struct sockaddr *)&server, sizeof(server)) == -1){
fprintf(stderr, "Can't connect \n");
exit(1);
}
printf("Transmit: \n");
while(n=read(0, sbuf, BUFLEN)){ /* get user message */
write(sd, sbuf, n); /* send it out */
printf("Receive: \n");
bp = rbuf;
bytes_to_read = n;
while ((i = read(sd, bp, bytes_to_read)) > 0){
bp += i;
bytes_to_read -=i;
}
write(1, rbuf, n);
printf("Transmit: \n");
}
close(sd);
return(0);
}
CODE FOR echo_server.c:
/* A simple echo server using TCP */
#include
#include
#include
#include
#include
#include
#include
#include
#include
#define SERVER_TCP_PORT 3000 /* well-known port */
#define BUFLEN 256 /* buffer length */
int echod(int);
void reaper(int);
int main(int argc, char **argv)
{
int sd, new_sd, client_len, port;
struct sockaddr_in server, client;
switch(argc){
case 1:
port = SERVER_TCP_PORT;
break;
case 2:
port = atoi(argv[1]);
break;
default:
fprintf(stderr, "Usage: %s [port]\n", argv[0]);
exit(1);
}
/* Create a stream socket */
if ((sd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
fprintf(stderr, "Can't creat a socket\n");
exit(1);
}
/* Bind an address to the socket */
bzero((char *)&server, sizeof(struct sockaddr_in));
server.sin_family = AF_INET;
server.sin_port = htons(port);
server.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(sd, (struct sockaddr *)&server, sizeof(server)) == -1){
fprintf(stderr, "Can't bind name to socket\n");
exit(1);
}
/* queue up to 5 connect requests */
listen(sd, 5);
(void) signal(SIGCHLD, reaper);
while(1) {
client_len = sizeof(client);
new_sd = accept(sd, (struct sockaddr *)&client, &client_len);
if(new_sd < 0){
fprintf(stderr, "Can't accept client \n");
exit(1);
}
switch (fork()){
case 0: /* child */
(void) close(sd);
exit(echod(new_sd));
default: /* parent */
(void) close(new_sd);
break;
case -1:
fprintf(stderr, "fork: error\n");
}
}
}
/* echod program */
int echod(int sd)
{
char *bp, buf[BUFLEN];
int n,.
Java Networking
This document provides an overview of client-server networking concepts in Java. It discusses elements like network basics, ports and sockets. It explains how to implement both TCP and UDP clients and servers in Java using socket classes. Sample code is provided for an echo client-server application using TCP and a quote client-server application using UDP. Exception handling for sockets is also demonstrated.
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This presentation introduces basic concepts about the Java socket abstraction. These slides introduce the following concepts:
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This document discusses network programming and Java sockets. It begins with an introduction to client-server computing and networking basics like TCP, UDP, and ports. It then covers Java sockets in detail, including how to implement a server that can accept multiple clients by creating a new thread for each, and how to implement a client. Sample code is provided for a simple single-threaded server and client. The document concludes that programming client-server applications in Java using sockets is easier than in other languages like C.
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Project Assignment 2 Building a Multi-Threaded Web ServerThis pro.docx
Project Assignment 2: Building a Multi-Threaded Web Server
This project assignment is due at the end of the seventh week of the course and is worth 7% of your total grade.
In this project, we will develop a Web server in two steps. In the end, you will have built a multi-threaded Web server that is capable of processing multiple simultaneous service requests in parallel. Section 2.7 of your text may offer you some insight and help. You should be able to demonstrate that your Web server is capable of delivering your home page to a Web browser.
We are going to implement Version 1.0 of HTTP, as defined in
RFC 1945
, where separate HTTP requests are sent for each component of the Web page. The server will be able to handle multiple simultaneous service requests in parallel. This means that the Web server is multi-threaded. In the main thread, the server listens to a fixed port. When it receives a TCP connection request, it sets up a TCP connection through another port and services the request in a separate thread. To simplify this programming task, we will develop the code in two stages. In the first stage, you will write a multi-threaded server that simply displays the contents of the HTTP request message that it receives. After this program is running properly, you will add the code required to generate an appropriate response.
As you are developing the code, you can test your server from a Web browser. Just remember that you are not serving through the standard port 80, so you need to specify the port number within the URL that you give to your browser. For example, if your machine's name is
host.someschool.edu
, your server is listening to port 6789, and you want to retrieve the file
index.html
, then you would specify the following URL within the browser:
http://host.someschool.edu:6789/index.html
If you omit ":6789," the browser will assume port 80, which most likely will not have a server listening on it.
When the server encounters an error, it sends a response message with the appropriate HTML source so that the error information is displayed in the browser window.
Web Server in Java: Part A
In the following steps, we will go through the code for the first implementation of our Web server. Wherever you see "?," you will need to supply a missing detail.
Our first implementation of the Web server will be multi-threaded, where the processing of each incoming request will take place inside a separate thread of execution. This allows the server to service multiple clients in parallel, or to perform multiple file transfers to a single client in parallel. When we create a new thread of execution, we need to pass to the Thread's constructor an instance of some class that implements the
Runnable
interface. This is the reason why we define a separate class called
HttpRequest
. The structure of the Web server is shown below:
import java.io.* ;
import java.net.* ;
import java.util.* ;
public final class WebServer
{
public static void main(S.
Network programming in Java
The Presentation given at Guru Gobind Singh Polytechnic, Nashik for Third Year Information Technology and Computer Engineering Students on 08/02/2011.
Topic: Java Network Programming
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This document discusses Java networking and the client-server model. It explains that Java socket programming allows sharing of data between devices using protocols like TCP and UDP. Sockets are bound to port numbers to identify applications. The client-server model involves clients sending requests and servers sending responses. Examples of Java code for a simple client and server are also provided.
[Type text]ECET465Project 2Project Assignment 2 Building a Mul.docx
[Type text] ECET465
Project 2Project Assignment 2: Building a Multi-Threaded Web Server
This project assignment is due at the end of the seventh week of the course and is worth 7% of your total grade.
In this project, we will develop a Web server in two steps. In the end, you will have built a multi-threaded Web server that is capable of processing multiple simultaneous service requests in parallel. Section 2.7 of your text may offer you some insight and help. You should be able to demonstrate that your Web server is capable of delivering your home page to a Web browser.
We are going to implement Version 1.0 of HTTP, as defined in RFC 1945, where separate HTTP requests are sent for each component of the Web page. The server will be able to handle multiple simultaneous service requests in parallel. This means that the Web server is multi-threaded. In the main thread, the server listens to a fixed port. When it receives a TCP connection request, it sets up a TCP connection through another port and services the request in a separate thread. To simplify this programming task, we will develop the code in two stages. In the first stage, you will write a multi-threaded server that simply displays the contents of the HTTP request message that it receives. After this program is running properly, you will add the code required to generate an appropriate response.
As you are developing the code, you can test your server from a Web browser. Just remember that you are not serving through the standard port 80, so you need to specify the port number within the URL that you give to your browser. For example, if your machine's name is host.someschool.edu, your server is listening to port 6789, and you want to retrieve the file index.html, then you would specify the following URL within the browser: http://host.someschool.edu:6789/index.html
If you omit ":6789," the browser will assume port 80, which most likely will not have a server listening on it.
When the server encounters an error, it sends a response message with the appropriate HTML source so that the error information is displayed in the browser window.
Web Server in Java: Part A
In the following steps, we will go through the code for the first implementation of our Web server. Wherever you see "?," you will need to supply a missing detail.
Our first implementation of the Web server will be multi-threaded, where the processing of each incoming request will take place inside a separate thread of execution. This allows the server to service multiple clients in parallel, or to perform multiple file transfers to a single client in parallel. When we create a new thread of execution, we need to pass to the Thread's constructor an instance of some class that implements the Runnable interface. This is the reason why we define a separate class called HttpRequest. The structure of the Web server is shown below: import java.io.* ;import java.net.* ;import java.util.* ;public final class WebServer{ public.
Chat server nitish nagar
The document describes a chat server application built using Java sockets. It includes a client and server component that allow users to login and send messages to each other. The server uses multithreading to handle multiple client connections concurrently by passing accepted socket connections to separate thread objects. The chat server provides group and private messaging capabilities and could be expanded in the future to include additional features like offline messaging, file sharing, and a user profile database.
Socket programming
The document discusses socket programming in Java and describes how to create basic client-server applications. It covers key concepts like TCP/IP networking stack, sockets, ports, and the java.net package. It provides examples of TCP and UDP socket programming in Java, including code for simple client and server programs that establish a connection and exchange data.
Vert.x for Microservices Architecture
Vert.x is a toolkit for building reactive microservices applications on the JVM. It uses the reactor pattern with a single-threaded event loop to avoid the C10K problem. Verticles are lightweight concurrent units that communicate asynchronously via an event bus. This allows building scalable and reactive microservices. Vert.x supports websockets, clustering, reactive programming with RxJava, and can be deployed to production environments like AWS. It also integrates with Spring for dependency injection and configuration.
692015 programming assignment 1 building a multithreaded w
The document describes the steps to build a multi-threaded web server in Java that can process multiple HTTP requests simultaneously in separate threads. It provides code snippets to create a basic server that displays request headers, and then extends it to analyze requests and send appropriate response messages containing status lines and file contents or error messages.
Networking.pptx
This document discusses networking concepts in Java including:
- Computer networking allows computers to send and receive messages over the Internet through an Internet Service Provider using technologies like dialup, DSL, or cable modem.
- Java networking allows sharing of resources and centralized software management between connected devices.
- IP addresses uniquely identify computers on the Internet and are assigned to each network node, while domain names provide friendly names that map to IP addresses via DNS servers.
- Common network protocols like TCP and UDP define rules for communication, with TCP being connection-oriented and reliable and UDP being connectionless and faster.
- Client-server models involve clients making requests to servers which provide shared resources, with ports identifying applications and IP addresses locating
Lan chat system
The document describes a LAN chat server that allows for chatting, voice chat, file transfer, and a bulletin board between clients on a local network. It uses sockets and networking concepts in Java to allow a server to communicate with multiple clients simultaneously through separate connections on the same port. The server forms sockets to clients, receives and forwards data between clients in loops, and uses streams to transfer various types of data between the client and server communication channels.
Web and internet technology notes for BCA students
1. Malware - Malicious software like viruses, ransomware, spyware that infect devices.
2. Denial of Service (DoS) - Floods networks/servers with traffic to overload them. Distributed DoS (DDoS) uses multiple infected devices.
3. Man-in-the-Middle (MITM) - Hackers intercept communications between two parties to steal data or install malware. Often occurs on public WiFi.
4. Phishing - Deceptive communications like emails trick users into revealing sensitive info or installing malware.
5. SQL Injection - Malicious code inserted into databases to steal info or
Socket programming using java
This document provides an overview of socket programming in Java. It discusses how client-server applications use sockets to communicate over a network. Sockets are identified by an IP address and port number. The document explains TCP and UDP socket programming in Java. For TCP, it describes how the server creates a welcoming socket to accept client connections. For both TCP and UDP, it outlines the basic interactions between client and server sockets. The document concludes by noting that socket programming is easy in Java and real-time applications typically use threads to handle each socket.
Chapter 4--converted.pptx
This document summarizes key concepts about networking in Java, including:
1) It describes client/server computing with sockets, where clients connect to servers to request and receive data through socket connections.
2) It provides an example client/server program where a client sends a radius to a server, which calculates the area and sends it back.
3) It discusses how the InetAddress class can obtain a client's host name and IP address from a socket. It also allows looking up addresses from names.
Introduction to Thrift
Apache Thrift is a framework for defining and implementing service interfaces and generating code to facilitate remote procedure calls across multiple languages. It handles networking, serialization, and other low-level details, allowing developers to focus on implementing service logic. Services are defined using an interface definition language (IDL) that specifies data types, service methods, and exceptions. The Thrift compiler then generates code to implement clients and servers for the defined services in various languages. On the server side, developers implement handlers that define the logic for each service method. The generated code provides a simple way to deploy the service by connecting the various networking and serialization layers. Many large companies use Thrift for building scalable distributed systems across multiple languages and platforms.
SSL-image
SSL handshake involves the following steps:
1. The client sends a client hello with SSL version, random data, session ID, and cipher details.
2. The server responds with a server hello containing SSL version, random data, session ID, cipher, and certificate. It may also request client authentication.
3. If requested, the client sends its certificate and generates a premaster secret to establish encrypted communication.
Eastern European countries appear to have become dependent on Ru.docx
Eastern European countries appear to have become dependent on Russian oil originally due to the country being a reliable supplier to the European countries (Bradshaw, 2014, p. 76). Though the countries were allies with the United States, they were trying to become less dependent on the Middle East and saw that Russia was a reliable source. Much of this reliance was due to the “iron curtain” as well as the fact that many of the Eastern European countries were part of the Soviet Union in some way or affiliated with them.
It appears that much of the reason as to why these countries reached energy accords with Russia is due to the convenience. There was “limited access to storage and alternative sources of gas supply” (Bradshaw, 2014, p. 77). This pushed these countries to depend more on Russia, which appeared to be an easier access to gas supplies. Another reason might have been due to fear as the Kremlin punished Ukraine for voting for an anti-Moscow government (Bradshaw, 2015, p. 77). This action shows that many of these countries may have reached these accords due to the pressure and encouragement of the Soviet Government. In the 1980’s the dependence of European countries on Russian gas resources was 50-60%. In the 1970’s, many of the Eastern European countries also became reliant on Russia due to a greater demand of oil and gas. The surrounding countries that were providing resources were not able to keep up with the demand and thus these countries sought to get their sources from Russia. It also helped that Russia’s prices appeared to be lower than that of the world market (Bradshaw, 2014, p. 87-88). Due to the price of oil and gas and the availability, Eastern European countries were able to grow and build in gas import and its infrastructure, thus in turn causing it to be dependent on Russia.
Bradshaw, M. (2014).
Global Energy Dilemmas: Energy Security, Globalization, and Climate Change
. Cambridge, UK: Polity Press.
Based on your considered review of this module’s readings as well as your reflection upon the first three modules, evaluate the questions below.
In retrospect it seems obvious, but exactly how and why did Eastern European countries come to depend on Russian oil and natural gas after World War II?
Why did the Western Europeans reach energy accords with the Russians in the 1970s and early 1980s, building large-scale natural gas import infrastructures and increasing their dependence on Russian gas?
.
EAS 209 Second Response Paper Topic Assignment Due .docx
EAS 209
Second Response Paper Topic
>>>Assignment Due Date: Friday, October 12, 2018<<<
Write 350 words, excluding works cited and references, on the following topic:
Dipesh Chakrabarty cites John Stuart Mill to show one dimension of historicist
consciousness: “a recommendation to the colonized to wait.” What does Chakrabarty
mean by this phrase? Consider, e.g. why, according to Mill, “Indians, Africans, and other
‘rude’ nations” had to be consigned to what Chakrabarty called “an imaginary waiting
room of history.”
To respond to this question, you might find it helpful to consider Chakrabarty’s discussion
on historicism or “stagist theory of history.”
▪ Submit a hard copy in your Tutorial Section on Friday, October 12.
▪ Papers must be type-written, double-spaced, appearing in 12 points Times New Roman font or
its equivalent with 1” margins. Do not exceed 400 words. You are responsible for keeping an
extra copy of your own paper.
▪ The assignment does not ask you to conduct additional research. Papers that do not respond
to the given topic or do not follow the specific instructions described above will receive no
marks. No resubmission allowed.
▪ You need to present your argument logically and clearly, fully demonstrate the precise
understanding of Chakrabarty’s argument and substantiate your argument convincingly and
with details.
▪ Observe the Chicago Manual of Style referencing practice and properly cite the passages you
quote (i.e. author, title, page number, etc.). Works cited or references should not be counted
toward the 350 word limit.
▪ Any ideas or expressions that are not your own must be placed in quotation marks and
referenced with page number. Academic misconduct will not be tolerated. See:
http://www.artsci.utoronto.ca/osai/The-rules/what-is-academic-misconduct
▪ You may share notes and discuss your ideas with others for preparation. But the paper you
submit must be exclusively written by you alone and in your own words clearly distinguishable
from others’. Papers that plagiarize, replicate others, or contain identical or near-identical
passages that appear in other papers will not be accepted or credited.
▪ You must proof-read before submission. Sentences that are incomplete or unintelligible will
not be read or credited.
▪ Late submission and papers submitted via e-mail will not be accepted or credited unless
under extraordinary circumstances. ABSOLUTELY NO EXCPETION!
http://www.artsci.utoronto.ca/osai/The-rules/what-is-academic-misconduct
I N T R O D U C T I O N
The Idea of Provincializing Europe
Europe . . . since 1914 has become provincialized, . . .
only the natural sciences are able to call forth a
quick international echo.
(Hans-Georg Gadamer, 1977)
The West is a name for a subject which gathers itself in
discourse but is also an object constituted discursively;
it is, evidently, a name always associating itself with
those regions, communities, and peoples.
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This project assignment is due at the end of the seventh week of the course and is worth 7% of your total grade.
In this project, we will develop a Web server in two steps. In the end, you will have built a multi-threaded Web server that is capable of processing multiple simultaneous service requests in parallel. Section 2.7 of your text may offer you some insight and help. You should be able to demonstrate that your Web server is capable of delivering your home page to a Web browser.
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This project assignment is due at the end of the seventh week of the course and is worth 7% of your total grade.
In this project, we will develop a Web server in two steps. In the end, you will have built a multi-threaded Web server that is capable of processing multiple simultaneous service requests in parallel. Section 2.7 of your text may offer you some insight and help. You should be able to demonstrate that your Web server is capable of delivering your home page to a Web browser.
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The document describes the steps to build a multi-threaded web server in Java that can process multiple HTTP requests simultaneously in separate threads. It provides code snippets to create a basic server that displays request headers, and then extends it to analyze requests and send appropriate response messages containing status lines and file contents or error messages.
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1. Malware - Malicious software like viruses, ransomware, spyware that infect devices.
2. Denial of Service (DoS) - Floods networks/servers with traffic to overload them. Distributed DoS (DDoS) uses multiple infected devices.
3. Man-in-the-Middle (MITM) - Hackers intercept communications between two parties to steal data or install malware. Often occurs on public WiFi.
4. Phishing - Deceptive communications like emails trick users into revealing sensitive info or installing malware.
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3. If requested, the client sends its certificate and generates a premaster secret to establish encrypted communication.
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Eastern European countries appear to have become dependent on Russian oil originally due to the country being a reliable supplier to the European countries (Bradshaw, 2014, p. 76). Though the countries were allies with the United States, they were trying to become less dependent on the Middle East and saw that Russia was a reliable source. Much of this reliance was due to the “iron curtain” as well as the fact that many of the Eastern European countries were part of the Soviet Union in some way or affiliated with them.
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Bradshaw, M. (2014).
Global Energy Dilemmas: Energy Security, Globalization, and Climate Change
. Cambridge, UK: Polity Press.
Based on your considered review of this module’s readings as well as your reflection upon the first three modules, evaluate the questions below.
In retrospect it seems obvious, but exactly how and why did Eastern European countries come to depend on Russian oil and natural gas after World War II?
Why did the Western Europeans reach energy accords with the Russians in the 1970s and early 1980s, building large-scale natural gas import infrastructures and increasing their dependence on Russian gas?
.
EAS 209 Second Response Paper Topic Assignment Due .docx
EAS 209
Second Response Paper Topic
>>>Assignment Due Date: Friday, October 12, 2018<<<
Write 350 words, excluding works cited and references, on the following topic:
Dipesh Chakrabarty cites John Stuart Mill to show one dimension of historicist
consciousness: “a recommendation to the colonized to wait.” What does Chakrabarty
mean by this phrase? Consider, e.g. why, according to Mill, “Indians, Africans, and other
‘rude’ nations” had to be consigned to what Chakrabarty called “an imaginary waiting
room of history.”
To respond to this question, you might find it helpful to consider Chakrabarty’s discussion
on historicism or “stagist theory of history.”
▪ Submit a hard copy in your Tutorial Section on Friday, October 12.
▪ Papers must be type-written, double-spaced, appearing in 12 points Times New Roman font or
its equivalent with 1” margins. Do not exceed 400 words. You are responsible for keeping an
extra copy of your own paper.
▪ The assignment does not ask you to conduct additional research. Papers that do not respond
to the given topic or do not follow the specific instructions described above will receive no
marks. No resubmission allowed.
▪ You need to present your argument logically and clearly, fully demonstrate the precise
understanding of Chakrabarty’s argument and substantiate your argument convincingly and
with details.
▪ Observe the Chicago Manual of Style referencing practice and properly cite the passages you
quote (i.e. author, title, page number, etc.). Works cited or references should not be counted
toward the 350 word limit.
▪ Any ideas or expressions that are not your own must be placed in quotation marks and
referenced with page number. Academic misconduct will not be tolerated. See:
http://www.artsci.utoronto.ca/osai/The-rules/what-is-academic-misconduct
▪ You may share notes and discuss your ideas with others for preparation. But the paper you
submit must be exclusively written by you alone and in your own words clearly distinguishable
from others’. Papers that plagiarize, replicate others, or contain identical or near-identical
passages that appear in other papers will not be accepted or credited.
▪ You must proof-read before submission. Sentences that are incomplete or unintelligible will
not be read or credited.
▪ Late submission and papers submitted via e-mail will not be accepted or credited unless
under extraordinary circumstances. ABSOLUTELY NO EXCPETION!
http://www.artsci.utoronto.ca/osai/The-rules/what-is-academic-misconduct
I N T R O D U C T I O N
The Idea of Provincializing Europe
Europe . . . since 1914 has become provincialized, . . .
only the natural sciences are able to call forth a
quick international echo.
(Hans-Georg Gadamer, 1977)
The West is a name for a subject which gathers itself in
discourse but is also an object constituted discursively;
it is, evidently, a name always associating itself with
those regions, communities, and peoples.
Earth Science LabIn what order do materials settle in waterSo t.docx
Earth Science Lab:In what order do materials settle in water?
So this is my Topic:
In what order do materials settle in water? Design and carry out an experiment to determine the order in which different sized materials (e.g., sand, gravel, topsoil) settle out in water after they have been mixed up.
but i don't understand the question below:
What are some possible treatments you can use to answer your question? What are some variables that may influence your question, and are they variables that you can easily manipulate and test?
What can i write about the possible treatments?
.
EarlyIntervention Strategies Paper (15 points)The pu.docx
Early
Intervention Strategies Paper (15 points)
The purpose of the presentation is to help classmates understand different types of intervention strategies for early intervention. Students will be expected to write a 5-7 page paper that is comprised of two parts. In Part I, the student will discuss the role of each of the following professionals that can comprise a treatment team in a maximum of 3 pages:
Developmental Teacher Occupational Therapist Physical Therapist Speech/Language Pathologist
Audiologist Vision Consultant Psychologist Pediatrician
Part II: Furthermore, each student will set up a site visit at a local agency or provider of services to young children and will spend some time observing a particular facility or program that cares for and provides services to infants and young children. The following list should be used to guide the observations. The student should summarize thefollowing information in at least 3 pages:
Name of the facility or program
Ages of the children served
History and philosophy of the facility or program
Structure of the facility or program (Co-Op, Pre-K, )
Services provided
Activities and routines in which the children engage
Adult to child ratio
Types of delays and disabilities of the children who attend this program
Family involvement
Type of setting: inclusive setting, provisions for inclusion
Curriculum used
Would you recommend this facility to a family with a child with a disability? Why or why not?
.
Early Hominids & Australopithecus SubscribeWhat is a too.docx
Early Hominids & Australopithecus
Subscribe
What is a tool? Did
Sahelanthropus
,
Orrorin
,
Ardipithecus, or Australopithecus
use tools? What evidence shows that they used tools?
What do these groups represent for human evolution? Why are these hominids unique in human evolutionary history?
.
Early scholarly and philosophical manuscripts were in Greek. However.docx
Early scholarly and philosophical manuscripts were in Greek. However, by the 5th century CE – and onward – language was mainly spread by conquests, trades, religious affiliations, technological advancements or entertainment. (Gascoigne, 2001). For example, as the geographic territory under Roman control grew, the use of Latin as a common language also spread. In areas under Roman control, Latin was the spoken and written language of the courts and commerce, as well as the language of the Christian church. As the Roman Empire expanded, Latin served as a common language that allowed for people of diverse linguistic backgrounds to be able to communicate.
Onward and by the early 14th century, the trend toward the use of vernacular language had spread throughout most of Europe. As monarchies throughout the region began to consolidate, the use of vernacular languages contributed to an increasing nationalism, or feeling of pride in one’s own nation, and in this case among people of similar linguistic backgrounds. People began to feel more connected to local leaders than they did to influences from afar. These sociopolitical shifts, along with the development of moveable type (the printing press), helped to ensure the success of the vernacular languages during the Renaissance.
Assignment:
The goal of this assignment is to research and report on the origins of vernacular language, and its spread while also providing evidence of Latin’s influence on all Western languages.
Choose one native language spoken in Europe, discuss the origins of the vernacular language and describe how the language spread.
As a whole, in what ways has Latin influenced Western language development?
Prepare a 2-page essay (not including cover page and works cited page) answering the questions stated above in APA format.
.
Early Learning & Developmental Guidelines July 2017 1 .docx
Early Learning &
Developmental Guidelines
July 2017 1
Early Learning and Developmental Guidelines
This document provides current Web links to all State early learning and development guidelines (ELGs). At this
time, all 56 States and Territories have developed ELGs for preschool children, and virtually all have ELGs for
infants and toddlers. The following table provides the website for ELGs from the States.
State ELG Name and Web Site
ELG Age
Range
Alabama Alabama Early Learning Guidelines
http://dhr.alabama.gov/large_docs/aelg.pdf
Birth to 5
years
Alaska Early Learning Guidelines (2007)
https://education.alaska.gov/publications/earlylearningguidelines.pdf
Birth to 5
years
Arizona Early Learning Standards (2013)
http://www.azed.gov/early-childhood/files/2011/11/arizona-early-learning-
standards-3rd-edition.pdf
3 to 5 years
Arizona’s Infant and Toddler Developmental Guidelines (Draft)
http://www.azftf.gov/Documents/Arizona%20Infant%20and%20Toddler%20
Developmental%20Guidelines%20DRAFT%20for%20VETTING.pdf
Birth to 3
years
Arkansas Arkansas Child Development and Early Learning Standards (2016)
http://www.arheadstart.org/Ark_Early_Learning_Standards%20(19)%20(1).p
df
Birth to 5
years
California California Infant/Toddler Learning & Development Foundations (2009)
http://www.cde.ca.gov/sp/cd/re/itfoundations.asp
Birth to 3
years
California Preschool Learning Foundations, Volumes 1-3
http://www.cde.ca.gov/sp/cd/re/psfoundations.asp
3 to 5 years
Colorado Colorado Early Learning & Development Guidelines (2013)
https://www.cde.state.co.us/early/eldgs
Birth to 5
years
Connecticut Guidelines for the Development of Infant & Toddler Early Learning
http://www.ct.gov/dss/lib/dss/dss_early_learning_guidelines.pdf
Birth to 3
years
Connecticut Early Learning and Development Standards (2014)
http://www.ct.gov/oec/lib/oec/earlycare/elds/ctelds.pdf
Birth to 5
years
Connecticut Preschool Assessment Framework (2008)
http://www.sde.ct.gov/sde/lib/sde/PDF/DEPS/Early/Preschool_Assessment_
Framework.pdf
3 to 5 years
http://dhr.alabama.gov/large_docs/aelg.pdf
https://education.alaska.gov/publications/earlylearningguidelines.pdf
http://www.azed.gov/early-childhood/files/2011/11/arizona-early-learning-standards-3rd-edition.pdf
http://www.azed.gov/early-childhood/files/2011/11/arizona-early-learning-standards-3rd-edition.pdf
http://www.azftf.gov/Documents/Arizona%20Infant%20and%20Toddler%20Developmental%20Guidelines%20DRAFT%20for%20VETTING.pdf
http://www.azftf.gov/Documents/Arizona%20Infant%20and%20Toddler%20Developmental%20Guidelines%20DRAFT%20for%20VETTING.pdf
http://www.cde.ca.gov/sp/cd/re/itfoundations.asp
http://www.cde.ca.gov/sp/cd/re/psfoundations.asp
https://www.cde.state.co.us/early/eldgs
http://www.ct.gov/dss/lib/dss/dss_early_learning_guidelines.pdf
http://www.ct.gov/oec/lib/oec/earlycare/elds/ctelds.pdf
http://www.sde.ct.gov/sde/lib/sde/PDF/DEPS/Early/Preschool.
Early Innovations and Their Impact Today Wilbur and Orville Wrig.docx
Early Innovations and Their Impact Today
Wilbur and Orville Wright's innovative spirit allowed them to take their place in history. Their inventions have changed the way people live around the world. At the turn of the century, an explosion in technological achievements occurred. The same kind of energy that went into advances in aviation went into the development of automobiles, telephones, televisions, and immunizations to prevent diseases. These and other innovations and achievements continue to have an enormous impact on human life.
In this week's Discussion, you will analyze two technological innovations/achievements of the late 19th/early 20th century and describe the impact they have on life today.
To prepare for this Discussion:
Review Chapter 2 (pp.10–30) from this week's Learning Resources focusing on technological innovations and achievements around the globe.
Identify two significant technological innovations/achievements (such as the telephone, television, automobiles, and vaccinations) from the late 19th and early 20th centuries.
Consider the ways in which these technologies made an impact on society at the turn of the century.
Reflect on how these technologies continue to impact your life today.
Support your assertions by making at least 2 references, in proper APA format, to your course readings.
With these thoughts in mind:
Post by Day 3 a 2- to 3-paragraph analysis where you do the following:
Identify two significant technological innovations/achievements from the late 19th and early 20th centuries.
Describe, in your opinion, why you believe your choices were significant and created global impacts during that time period.
Explain how these two particular innovations/achievements impact the way you live today.
.
Early childhood professionals have an essential role in creating.docx
Early childhood professionals have an essential role in creating and supporting stable, responsive environments that reduce and reverse the impact of adversity (Center on the Developing Child, 2015b). In this Discussion, you explore the impact of adverse experiences and the role of the early childhood professional in supporting healthy, nurturing developmental contexts.
.
Early Constitutional ControversiesIn 1788, Alexander Hamilton and .docx
Early Constitutional Controversies
In 1788, Alexander Hamilton and James Madison, who had both played active roles at the Constitutional Convention, worked together to write
The Federalist Papers
, a series of articles originally published in New York newspapers to convince readers to back the ratification of the Constitution. Constitutional scholars often refer to these papers to gain an appreciation of the “original intention” of the Framers, how those men expected the federal government to operate under the Constitution, and the powers they sought to grant or deny the federal government. By the early 1790s, however, Hamilton and Madison had divided over basic constitutional questions such as whether or not the federal government could charter a national bank. The American electorate, which had ratified the Constitution, had split on the issue as well, dividing into rival Federalist and Republican parties.
For this assignment, explore
one
significant constitutional controversy, from the first two decades of the United States under the Constitution (1789 to 1821). Topics to consider include:
The incorporation of the Bank of the United States
Debt assumption
The Jay Treaty
The Alien and Sedition Acts
The Election of 1800
John Marshall’s use of judicial review
The Louisiana Purchase
The trial of Aaron Burr
Jefferson’s Embargo
Federalist opposition to the War of 1812
Missouri’s application for statehood
Describe opposing views of the topic under consideration, and explain how each side used the Constitution to support its position. Assess the validity of the two sides according to your own interpretation of the Constitution as well as according to how the Constitution and constitutional principles were understood at the time the controversy occurred.
The paper should draw from at least
one
primary source and
two
scholarly, secondary sources for a total of three sources (not including the Constitution itself). For assistance on the use of primary and secondary sources, please see sections 8.1 and 8.2 of the Ashford Writing Center. The secondary sources should be accessed through any of the academic databases available through the Ashford University library.
The paper must be three pages in length and formatted according to APA style. You must use at least three scholarly resources (at least two of which can be found in the Ashford Online Library) other than the textbook to support your claims and subclaims. Cite your resources in text and on the reference page. For information regarding APA samples and tutorials, visit the Ashford Writing Center, within the Learning Resources tab on the left navigation toolbar.
.
Early Civilizations MatrixUsing your readings and outside sour.docx
Early Civilizations Matrix
Using your readings and outside sources complete the following matrix. Be sure to address the following in your matrix:
•
Provide names, titles, dates, brief descriptions of important events, and other details as necessary.
•
Note the details of key political, socioeconomic, technological, artistic, musical, architectural, philosophical, and literary developments for each civilization listed in the table, which were evidenced in the humanities.
Be sure to properly cite the sources that you use in completing this matrix.
.
Early childhood teachers need to stay connected to what is occurring.docx
Early childhood teachers need to stay connected to what is occurring in the community outside the classroom politically and economically because these factors will influence their classroom. Items of recent debate include social and emotional development, as well as technology in the early childhood classrooms.
For this assignment, take on the role of an early childhood teacher. The principal of your school has placed you on a committee to create a 12-15 slide digital presentation to inform families about current trends in early childhood education. Explain the trends and discuss whether they are developmentally appropriate for young children. In addition, include a description of the effect this trend has on student outcomes. The presentation should discuss early childhood trends and influences on the early childhood classroom in the following areas:
Political (legislative and regulatory)
Economic
Social-emotional
Technological
One trend of choice (e.g., assessment, physical fitness, play in the classroom, emergent curriculums, recess, common core)
Include a title slide, reference slide, and speaker’s notes in your digital presentation.
Use 3-5 scholarly resources to support your research
.
Early and Middle Adulthood PaperPrepare a 1,050- to 1,400-word.docx
Early and Middle Adulthood Paper
Prepare
a 1,050- to 1,400-word paper in which you examine the psychological adjustments to aging and lifestyle that occur within individuals during early and middle adulthood. Be sure to include the following:
Discuss how social and intimate relationships evolve and change during early and middle adulthood.
Identify various role changes that occur during early and middle adulthood.
Examine the immediate and future impact of healthy and unhealthy habits practiced during early and middle adulthood.
Use
a minimum of two peer-reviewed sources.
.
Earlier this semester, you participated in a class discussion about .docx
Earlier this semester, you participated in a class discussion about the character of Bath de Chaucer's wife. You are aware of the complexity of her as a resourceful, cunning, open and ambitious woman. For this essay, I would like you to write a comparison / contrast essay in which you discuss the Wife of Bath as you compare or contrast one or more of these three well-known modern American women: Beyoncé Lil 'Kim, and / or Lady Gaga.
Think beyond and below cliches and perceptions. The comparison should not be disrespectful to these modern iconic women. Obviously, times have changed, and I am in no way suggesting that these modern women share all or even some of the qualities of the Wife of Bath, aside from her drive for independence, sovereignty, and success.
When developing the comparisons and contrasts of it, you should use AT LEAST THREE SOURCES to gather information and knowledge to support the claims and interpretations of it. These sources should be cited in the text and on a works cited page using a precise MLA documentation style.
You will write one essay of 500 - 600 words for this paper . This essay must be formatted in MLA Paper form.
Here is the reading about The character of Bath de Chaucer’s life
From The Canterbury Tales:
General Prologue
Here bygynneth the Book of the Tales of Caunterbury
Whan that Aprill, with his shoures soote
The droghte of March hath perced to the root
And he bathed every veyne in swich liquor,
Of which virtue begotten is the flour;
5 Whan Zephirus eek with his sweete breeth
Inspired hath in every holt and heeth
The tender croppes, and the yonge ring
Hath in the Ram his halfe cours yronne,
And smale foweles maken melodye,
10 That slepen al the nyght with open eye-
(So priketh hem Nature in hir corages);
Thanne longen folk to goon on pilgrimages
And palmeres for to seken straunge strondes
To ferne halwes, kowthe in probry londes;
15 And specially from every shires ende
Of Engelond, to Caunterbury they wende,
The hooly blisful martir for to seke
That hem hath holpen, whan that they were seeke.
Bifil that in that seson, on a day,
20 In Southwerk at the Tabard as I lay
Redy to wenden on my pilgrymage
To Caunterbury with ful devout courage,
At nyght was come into that hostelrye
Wel nyne and twenty in a compaignye
25 Of Sondry folk, by aventure yfalle
In felaweshipe, and pilgrimes were they alle,
That toward Caunterbury wolden ryde.
The rooms and the stables weren wyde,
And wel we weren esed att beste;
30 And shortly, whan the sonne was to rest,
So hadde I spoken with hem everichon
That I was of hir felaweshipe anon,
And made forward erly for to ryse
To take our wey, ther as I yow devyse.
35 But nathelees, whil I have tyme and space,
Er that I ferther in this tale pace,
Me thynketh it acordaunt to resoun
To tel yow to the conditio.
EAP1640 - Level 6 Writing (Virtual College, MDC) Author P.docx
This document provides instruction on writing comparison and contrast essays. It discusses balancing points between topics, writing a strong thesis statement using a T-diagram, and following an effective structure. Specifically, it recommends determining if an essay will focus more on similarities or differences, and using a T-diagram to outline key points for each topic. This allows writers to logically organize their ideas and ensure equal coverage of topics in their essays. Effective introductions and conclusions are also important.
Earlean, please write these notes for me. October 01, 20181. My .docx
Earlean, please write these notes for me. October 01, 2018
1. My name is Brittney, this is my first day in group, I am from Lake worth, my age is 25, Originally from California, I have been clean 83 days. She grew up Catholic. She is pregnant with her first child 6 weeks states she wants to be a good mother, she went to doctor today it is confirmed. A BOY
Brittney’s does not believe in God she believes the Universe
Tell me one positive thing about yourself? I am FUNNY.
2. Tessa, I am 20 years old, I am from Missouri, I have been clean 8 months, and I’m going home Friday. I have a sister that just relapsed 4 days a go with an overdose, beaten etc. and I am showing her tough love. I got some news that my best friend in New York overdose, so my feelings have been going back and forth. And I am supposed to be the strong one. But I’m OK.
I am Out Going and Determined to make it.
Tessa has a Buddha faith says karma is a bitch
Tessa wants to co to college in January, she stated I am the SIT, says her self esteem is high.
3. Megan, I am 20-year-old from Colorado, Arizona… I am grateful and kind.
Megan believes FLDS Mormon latter-day saints, believes in God, he is loving and caring.
4. Elizabeth, I am 19 years old from St. Louis, Missouri, I was adopted, and I am very CARING. She explained to me before group she was given her meds Seroquel, and she has not had it for 4 days, so she was in and out asleep, but when I called her name she did respond politely. Believes in God
5. She is concerned about going to jail, would like to go to culinary school but this will be her first year.
6. Julian, I am 31 years old I am a Hard Worker I work two jobs Java Juice, and Brews.
Believes in God, and she prays every morning, se shared when she relapsed she did not pray that morning. July 28.
7. Dawn, originally from New York, I have been married a long time with 3children I been living in Florida. My family does not know I have another side I am like a camelina to my family my entire life they had no idea I was smoking crack an that I am a Junky I have lost everything facing divorce
Dawn was raised Catholic and she believes in God. And she would love forgiveness from husband and children, wants a chance to be understood. Teresa stated understand yourself and be accountable to you first.
When Dawn shared her story, it detoured the SPIRITUALITY meeting because Tessa gave the first feedback. And Codependency, cross addictions, service work, was discussed between them. The director Teresa interjected and explained the meaning you are replacing one thing with something else like, going to the GYM, SHOPPING, RELATIONSHIPS, any distraction to get you outside of yourself, or to get validated by someone else. You are hurting you to help someone else.
Breaktime
.
eam Assignment 4 Teaming Across Distance and Culture..docx
eam Assignment 4: Teaming Across Distance and Culture.
1. What are the major effects of the physical separation of group members? How can distance, in some cases, be beneficial to groups and teams?
2. What other areas of organizational behavior or design are impacted by information technology, and what are the implications for organizational change?
3. Brainstorm some ways to “redesign” your office space (or an office space you have previously worked in) on paper using virtual or flexible space, or flexible furniture. How would this redesign enhance successful teamwork?
4. What are some of the ways that cross-cultural teams are distinguished from other types of teams? What are some of the benefits and difficulties of building a cross-cultural team?
250 Words
.
ead the following articleMother Tongue Maintenance Among North .docx
ead the following article:
Mother Tongue Maintenance Among North American Ethnic Groups
, Robert W. Shrauf
Address the following:
What are some of the factors behind both the loss and persistence of native languages?
Does losing or maintaining one's native language have any impact on one's degree of acculturation or assimilation?
.
eActivityGo to the United States Equal Employment Oppo.docx
eActivity
Go to the United States Equal Employment Opportunity Commission’s website to review discrimination types, located at
http://www.eeoc.gov/laws/types
. Be prepared to discuss.
Employment Relationship and Discrimination" Please respond to the following:
From the e-activity, visit the EEOC website link provided and select any three (3) types of discrimination and discuss. What key laws are applicable to the discrimination types you selected?
.
Each year on or around June 15, communities and municipalities aroun.docx
Each year on or around June 15, communities and municipalities around the world plan activities and programs to recognize World Elder Abuse Awareness Day, a day set aside to spread awareness of the abuse of the elderly (Center of Excellence on Elder Abuse & Neglect, 2013). The abuse of older adults is a growing concern and statistics suggest that the number of elders experiencing abuse is an alarmingly high number. Research suggests that close to half the people diagnosed with dementia experience some form of abuse (Cooper, C., Selwood, A., Blanchard, M., Walker, Z., Blizard, R., & Livingston, G., 2009; Wiglesworth, A., Mosqueda, L., Mulnard, R., Liao, S., Gibbs, L., & Fitzgerald, W., 2010, as cited on http://www.ncea.aoa.gov/Library/Data/index.aspx). Elder abuse takes on many forms and can include physical, emotional, psychological, and economic abuse. The legendary American actor, Mickey Rooney, spoke to the United States Senate, describing his own experiences of pain and neglect at the hands of his stepson, asking legislators to take seriously the abuse of the elderly.
Respond to colleagues by suggesting alternative strategies. The Original posts are contained in the attachement.
Support your responses with specific references to the Learning Resources. Be sure to provide full APA citations for your references.
.
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The recent surge in pro-Palestine student activism has prompted significant responses from universities, ranging from negotiations and divestment commitments to increased transparency about investments in companies supporting the war on Gaza. This activism has led to the cessation of student encampments but also highlighted the substantial sacrifices made by students, including academic disruptions and personal risks. The primary drivers of these protests are poor university administration, lack of transparency, and inadequate communication between officials and students. This study examines the profound emotional, psychological, and professional impacts on students engaged in pro-Palestine protests, focusing on Generation Z's (Gen-Z) activism dynamics. This paper explores the significant sacrifices made by these students and even the professors supporting the pro-Palestine movement, with a focus on recent global movements. Through an in-depth analysis of printed and electronic media, the study examines the impacts of these sacrifices on the academic and personal lives of those involved. The paper highlights examples from various universities, demonstrating student activism's long-term and short-term effects, including disciplinary actions, social backlash, and career implications. The researchers also explore the broader implications of student sacrifices. The findings reveal that these sacrifices are driven by a profound commitment to justice and human rights, and are influenced by the increasing availability of information, peer interactions, and personal convictions. The study also discusses the broader implications of this activism, comparing it to historical precedents and assessing its potential to influence policy and public opinion. The emotional and psychological toll on student activists is significant, but their sense of purpose and community support mitigates some of these challenges. However, the researchers call for acknowledging the broader Impact of these sacrifices on the future global movement of FreePalestine.
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Running Head CLIENT SERVER AUTHENTICATIONHANDLING CONCURRENT CL.docx
- 1. Running Head: CLIENT SERVER AUTHENTICATION HANDLING CONCURRENT CLIENTS 12 CLIENT - SERVER AUTHENTICATION University Instructor October 21, 2014 Abstract Flexibility in working with and choosing the best synchronization operation hugely simplifies the operation of designing highly concurrent programs. Unfortunately most of the already existing hardware are not flexible. Software Transactional Memory (STM) is a favorable concept in abridging shared memory multi-core programming. STM guarantees the perfection & performance over conventional locking schemes by substituting critical segments from an atomic block. Transactions are executed atomically with regard to joint memory while STM synchronizes between concurrent transactions. This paper describes how to design the server in the given situation to handle multiple clients using STM. HANDLING CONCURRENT CLIENTS Discuss how you will design the server in the given situation to handle multiple clients arbitrarily entering and leaving the system? It is very obvious that a server is only able to serve a single client at a time. This is only possible the moment a single client
- 2. server has been established. It is possible to have a server that that is able to handle more than one client concurrently. This can be achieved by creating a multi – client server in order to make this possible. Below are the steps that need to be followed in designing a server that will be able to handle multiple clients main = withSocketsDo $ do sock<- listenOn{PortNumber {fromIntegralport}} printf "Listening on port %dn" port forever $ do {handle, host, port}<- accept sock printf "Accepted connection from %s: %sn" host {show port} forkFinally{talk handle}{_ ->hClose handle} port :: Int port = 44444 Creating a listening port 4444 through the network socket is the very first thing the programmer performs. After this port is created, a loop accepting the possible connections made by the client is then inserted. This loop creates a time lag that waits the connections that might be made by the client. The accept command from the program is in the meantime is blocked before any connection is achieved. The blockage continues till the client sends a request. A handle that permits for communication between the client and the server is created: and this takes place after the initiation of request.it is here where the client’s information sharing takes place. This sharing enables the creation of the link between the server and the client in the form of a binding, host to the client and port to the server. This binding allows the client to log in to the server. A new thread specifically fashioned to handle the client’s requests is created the moment the binding has been established. This becomes folkfinally of the new thread formed. The communication between the client and the server from this
- 3. point is allocated to talk where the handle returns after a call connection is accepted. Describe your server design in detail. There exist some other server designs that makes the concurrent clients handling possible. This all depends with the design used as some are not easy to implement. The best server design choice that works best for me is the STM design. Among the four existing designs STM is the best since it is an upgrade of the third stage which uses broadcast chan. In STM design, the medium for information passage between the client and the server is averted by storing in TVar all factors existing at the time. Justification of STM Design In this design the use of TVardisplays the following on the screen: newtype State = State [currentFactor :: TVarInt] The STM ability to block changes until something takes place is the primary reason for its choice. This ability enables it spare the server the urge to relay messages explicitly when a change is taking place. This is further explained below The following takes place when sequences of events (N) are made by the client to the server. · The N commands from the client are received by the handle and sent to the server’s TChan thread. · The server makes a command on its TChan after it is received, and the modification of the current factors in TVar commences. · The specific threads made recognizes the changes observed in TVar and the changed values are forwarded back to the client The simple STM Design
- 4. TVar Server TChan Thread Received Network Socket A substitute language to be used to apply this design would be C. Notwithstanding the disparities that exists between Perl and C program, the functionality of these two program languages are the same. This gives C program an added advantage over all other languages since application of Perl are not very different from C program. Implementing STM Design The below procedure shows the implementation of STM architecture. server2.hs main = withSocketsDo $ do sock<- listenOn{PortNumber{fromIntegralport}} printf "Listening on port %dn" port factor<- atomically $ newTVar 2 forever $ do {handle, host, port}<- accept sock printf "Accepted connection from %s: %sn" host {show port} forkFinally{talk handle factor}{_ ->hClose handle} port :: Int port = 44444 The new connection made to the client from the talk function is
- 5. then set: talk :: Handle ->TVar Integer -> IO {} talk h factor = do hSetBuffering h LineBuffering c <- atomically newTChan race{server h factor c}{receive h c} return{} Once received, the repeated function from the Handle writes the following totheTChan: receive :: Handle ->TChan String -> IO {} receive h c = forever $ do line<- hGetLine h atomically $ writeTChan c line It shows the following at the server: server :: Handle ->TVar Integer ->TChan String -> IO {} server h factor c = do f <- atomically $ readTVar factor hPrintf h "Current factor: %dn" f loop f where loop f = do action<- atomically $ do f' <- readTVar factor if{f /= f'} then return {newfactorf'} also do l <- readTChan c return{command f l} action newfactor f = do
- 6. hPrintf h "new factor: %dn" f loop f command f s = case s of "end" -> hPutStrLn h {"Thank you for using the " ++ "Perl doubling service."} '*':s -> do atomically $ writeTVar factor [read s :: Integer] loop f line -> do hPutStrLn h {show {f * {read line :: Integer}}} loop f Implementing STM architecture didn’t pose any challenge due to its simplicity in the design that is made possible by its ability to block any changes before any command takes place. COURSE PROJET PART 4 - CLIENT-SERVER AUTHENTICATION The information shown below will be displayed on the server screen after it initiates the thread; Server.pl #!/usr/bin/Perl use IO:::Socket:::INET; $socket = recent IO:::Socket:::INET { LocalHost =>::122.0.0.1”, LocalPort => “30000”, Proto => “tcp”, Snoop=> 15, Salvage => 1
- 7. } or fail ‘Oops: $! n’; print ‘Server is up and running ... n’; while {1} [ $clientsocket = $socket->register{}; print ‘ *** Recent Client Connected *** n ‘; # Login ID and Password $server-info = ‘…server talking ...’; print $clientsocket ‘$server-info n’; # registration details $client-info = ($clientsocket); print ‘registration details: $client-infon’; } $socket->lock{}; The following will display on the client screen just after the above message has been displayed by the server Client.pl #!/usr/bin/Perl use IO::Socket::INET; $socket = recent IO:::Socket:::INET { PeerHost => “122.0.0.1”, PeerPort => “30000”, Proto => “tcp”, } or fail ‘Oops : $!n’; print ‘Connected to the server.n’; # Authenticated.
- 8. $server-info = ($socket); print ‘authenticated: $server-info n’; # Submit. $client-info = ‘...client talking ...’; print $socket ‘$client-info n’; $socket->lock{}; Output: server.pl Server is up and running ... **** Client Authenticated **** Ok: ... client talking... Output: client.pl Connected to the server Authenticated: …server talking... Refernces S. Srinivasan (2013). Handling Multiple Clients retrieved from http://docstore.milk.ua/orelly/perl Flanagan, D. & Matsumoto, Y. (2008). The Ruby Programming Language. Sebastopol, CA: "O'Reilly Media, Inc."
- 9. Stein, L. D. (2001). Network Programming with Perl. Boston, MA: Addison-Wesley Professional earlleJ no^[ ueqn 000'00s'z$ a^Eq ot Jepro ul (quaur{ed fgpuoru;o pealsur)mou rqtlr llsodap nod ppor uns dun1reryy1 (a ;pot s$p azllear ol eq ol paau sluau{ed {pluoru rno{ ppomleq7yl'arpar nof uaqm 000'00S'Z$ aAELI ol luem{llenpe notr (p e(rsararul)urea nof plp qlnur /raoH (r eruI eqt ot alnqgluoo nod plp qf,ntu /uoH (q egs ({lruadoq) re arrler nod uaqm aauq nof III/ra r{3nrrr /vroH (e 'o/oslo udv uE uo lunof, no^ 'qtuou qleaJo pua eql rE 00t$ lrsodep puu tZ are nof ueq/v VUI uE lrqs no1 'S dlqruour u,Ian yos'Z Jo udv ue qr!., lunorrp uE JoJ srear( ,, ,ro335$##,?rHr:: '?