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Poco websocket库特点:

1,使用http/https ClientSession创建websocket client

2,是同步的,这对C++桌面编程来说应该是够用的.

3,依赖openssl.

代码如下

#include "stdafx.h"

#include <iostream>

#include <assert.h>

#include "Poco/Net/WebSocket.h"

#include "Poco/Net/HTTPClientSession.h"

#include "Poco/Net/HTTPRequest.h"

#include "Poco/Net/HTTPResponse.h"

#include "Poco/Net/ServerSocket.h"

#include "Poco/Net/NetException.h"

#include "Poco/Exception.h"

#include "Poco/Net/HTTPSClientSession.h"

#include "Poco/URIStreamOpener.h"

#include "Poco/StreamCopier.h"

#include "Poco/Path.h"

#include "Poco/URI.h"

#include "Poco/SharedPtr.h"

#include "Poco/Exception.h"

#include "Poco/Net/HTTPStreamFactory.h"

#include "Poco/Net/HTTPSStreamFactory.h"

#include "Poco/Net/FTPStreamFactory.h"

#include "Poco/Net/SSLManager.h"

#include "Poco/Net/KeyConsoleHandler.h"

#include "Poco/Net/ConsoleCertificateHandler.h"

#include "Poco/Net/AcceptCertificateHandler.h"

#include "Poco/Net/SecureStreamSocket.h"

#include "Poco/Net/X509Certificate.h"

#include <memory>

using Poco::Net::HTTPSClientSession;

using Poco::Net::HTTPClientSession;

using Poco::Net::HTTPRequest;

using Poco::Net::HTTPResponse;

using Poco::Net::HTTPServerRequest;

using Poco::Net::HTTPServerResponse;

using Poco::Net::WebSocket;

using Poco::Net::WebSocketException;

using Poco::Exception;

using Poco::URIStreamOpener;

using Poco::StreamCopier;

using Poco::Path;

using Poco::URI;

using Poco::SharedPtr;

using Poco::Exception;

using Poco::Net::HTTPStreamFactory;

using Poco::Net::HTTPSStreamFactory;

using Poco::Net::FTPStreamFactory;

using Poco::Net::SSLManager;

using Poco::Net::Context;

using Poco::Net::KeyConsoleHandler;

using Poco::Net::PrivateKeyPassphraseHandler;

using Poco::Net::InvalidCertificateHandler;

using Poco::Net::ConsoleCertificateHandler;

using Poco::Net::AcceptCertificateHandler;

using Poco::Net::X509Certificate;

int main(int argc, _TCHAR* argv[])

{

char buffer[1024];

int flags;

int n;

std::string payload;

try

{

Poco::Net::initializeSSL();

SharedPtr<InvalidCertificateHandler> pCert = new ConsoleCertificateHandler(false); // ask the user via console

Context::Ptr pContext = new Context(Context::TLSV1_CLIENT_USE, "", "", "rootcert.pem", Context::VERIFY_RELAXED, 9, false, "ALL:!ADH:!LOW:!EXP:!MD5:@STRENGTH");

SSLManager::instance().initializeClient(0, pCert, pContext);

HTTPSClientSession cs("echo.websocket.org", 443);

HTTPRequest request(HTTPRequest::HTTP_GET, "/","HTTP/1.1");

HTTPResponse response;

std::string cmd;

WebSocket * ws = new WebSocket(cs, request, response); // Causes the timeout

payload = "SHAKETHAND";

ws->sendFrame(payload.data(), payload.size(), WebSocket::FRAME_TEXT);

n = ws->receiveFrame(buffer, sizeof(buffer), flags);

std::cout<<"return:"<<std::string(buffer,n)<<"＼n";

ws->shutdown();

}

catch (Poco::Exception& ex)

{

std::cout << "Error: " <<__FILE__<<":"<<__LINE__<<":"<< ex.displayText() << "＼n";

return -1;

}

return 0;

}

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