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(PHP ActiveX) WebSocket Connect through HTTP ProxyThis example shows how to establish a WebSocket connection through an HTTP proxy server.
<?php // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // -------------------------------------------------- // This example borrows the code from the REST using HTTP Proxy example. // We first use the Chilkat Socket object to establish a connection to the WebSocket server through an HTTP proxy. // Next, the Rest object uses the Socket object for its connection. // Finally, the WebSocket object uses the Rest object for its connection. // // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Rest') $rest = new COM("Chilkat.Rest"); // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Socket') $socket = new COM("Chilkat.Socket"); // Set the HTTP proxy domain or IP address, and port. $socket->HttpProxyHostname = '192.168.1.79'; $socket->HttpProxyPort = 808; // Provide authentication to the HTTP proxy, if needed. $socket->HttpProxyUsername = 'HTTP_PROXY_LOGIN'; $socket->HttpProxyPassword = 'HTTP_PROXY_PASSWORD'; $socket->HttpProxyAuthMethod = 'Basic'; // Indicate that HTTP requests (i.e. the WebSocket opening handshake) will be sent over the socket. // This is important for how the HTTP proxy connection is established. $socket->HttpProxyForHttp = 1; // Connect to the websocket server through the HTTP proxy. $bTls = 0; $port = 80; $maxWaitMs = 5000; $success = $socket->Connect('some-websocket-server.com',$port,$bTls,$maxWaitMs); if ($success != 1) { print 'Connect Failure Error Code: ' . $socket->ConnectFailReason . "\n"; print $socket->LastErrorText . "\n"; exit; } // Tell the Rest object to use the connected socket. $success = $rest->UseConnection($socket,1); if ($success != 1) { print $rest->LastErrorText . "\n"; exit; } // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.WebSocket') $ws = new COM("Chilkat.WebSocket"); // Tell the WebSocket to use this connection. $success = $ws->UseConnection($rest); if ($success != 1) { print $ws->LastErrorText . "\n"; exit; } // Add the standard WebSocket open handshake headers that will be needed. // (This adds the required HTTP request headers to the rest object.) $ws->AddClientHeaders(); // Add any additional headers that might be desired. // Two common WebSocketSpecific headers are "Sec-WebSocket-Protocol" and "Origin". $rest->AddHeader('Sec-WebSocket-Protocol','x-some-websocket-subprotocol'); $rest->AddHeader('Origin','http://some-websocket-server.com'); // Do the open handshake. $responseBody = $rest->fullRequestNoBody('GET','/something'); if ($rest->LastMethodSuccess != 1) { print $rest->LastErrorText . "\n"; exit; } // If successful, the HTTP response status code should be 101, // and the response body will be empty. (If it failed, we'll have a look // at the response body..) $statusCode = $rest->ResponseStatusCode; print 'Response status code: ' . $statusCode . "\n"; if ($statusCode != 101) { print $responseBody . "\n"; print '-- Failed because of unexpected response status code.' . "\n"; exit; } // We have the expected 101 response, so let's now validate the // contents of the response, such as the value sent by the server in the // Sec-WebSocket-Accept header. $success = $ws->ValidateServerHandshake(); if ($success != 1) { print $ws->LastErrorText . "\n"; exit; } print 'WebSocket connection successful.' . "\n"; // The application may now begin sending and receiving frames on the WebSocket connection. // (At this point, we're done with the rest and socket objects...) print 'Success.' . "\n"; ?> |
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