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Web Sockets - HTML5


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With the HTML5 age a lot of new features came to help developers to create amazing apps and amazing user experience, one of these features is called web socket which provides new powers under the HTTP protocol.

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Web Sockets - HTML5

  1. 1. Why should we use a socket ? HTTP ? The client side The server side Trying to join the parts together Agenda
  3. 3. var mySocket= new WebSocket(‘ws://’, [‘myProtocol’]); mySocket.onopen = function() {}; mysocket.onclose = function() {}; mySocket.onmessage = functino() {}; mySocket.onerror = function() {}; mySocket.send() {};
  4. 4. GET /hello-web-socket HTTP/1.1 Host: Upgrade: websocket Connection: Upgrade Sec-WebSocket-Key: x3JJHMbDL1EzLkh9GBhXDw== Sec-WebSocket-Protocol: myProtocol Sec-WebSocket-Version: 13 Origin:
  5. 5. HTTP/1.1 101 Switching Protocols Upgrade: websocket Connection: Upgrade Sec-WebSocket-Accept: HSmrc0sMlYUkAGmm5OPpG2HaGWk= Sec-WebSocket-Protocol: myProtocol
  6. 6. Talk is cheap, show me the code.
  7. 7. if(preg_match("/Sec-WebSocket-Key: (.*)rn/",$hds,$matchs)){ $key = $matchs[1] . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11'; $key = base64_encode(sha1($key, true)); $headers = "HTTP/1.1 101 Switching Protocolsrn". "Upgrade: websocketrn". "Connection: Upgradern". "Sec-WebSocket-Accept: $key". "rnrn"; socket_write($msgsock, $headers); }
  8. 8. Matheus Marabesi