This document provides an overview of basic HTTP requests and communications in Meme IDE projects. It describes setting up a server entry, example request and response data, using the fetch command to make requests, and includes boilerplate code for a successful response function that checks the status and payload of the response.

1. Basic Communications
● HTTP Requests
● Posting of data
● Simple Example App

2. Download CommsTest Project
● This presentation is accompanies by an
example Meme IDE project that can be
downloaded from:
● http://www.memeapps.com/tutorials//commsprojectpage.php

3. Define a Server Entry
● Project properties
● Servers tab
– Server name. Used in functions
– Address. Server address without protocol
– Protocol. HTTP or HTTPS
– Minimum Connection

4. Server Entry for Example Project

5. demo.memeide.com
● Example data for sample projects
● fetch_test.xml
<Person fname="Andrew" sname="Whitmore">
</Person>

6. Record Structure

7. Form

8. Single Button
● Click and it runs the function:
● SendRequest
function sendRequest()
{
fetch("TestServer", "fetch_test.xml",
"Person", "successfulResponse");
}

9. The 'fetch' command
● Fetch
● Server name - “TestServer”
● Path - “fetch_test.xml”
● Record Type - “Person”
● Response Callback
– “successfulResponse”
– Called when request complete
– Not written yet
– Up next ......

10. SuccessfulResponse function
function successfulResponse(response : Response)
{
var result : Person;
var status = response.status;
if (status == 200)
{
result = response.payload;
notify("Got a person, fname=" + result.fname);
}
else
{
notify("Error, status=" + status);
}
}
Mandatory Parameter of type Response

11. 'Response' Record Type
● Built-in
● Attributes
● Status – response code (200 for success)
● Payload – a record in this case a 'Person'
● Message – any error message

12. SuccessfulResponse function
function successfulResponse(response : Response)
{
var result : Person; Test the status for 200
var status = response.status;
if (status == 200)
{ Display the name attribute
result = response.payload;
notify("Got a person, fname=" + result.fname);
}
else
{
notify("Error, status=" + status);
}
If there is an error,
}
display the status code

13. Boilerplate code
● Startup function
● open(“MainForm”);

14. The App