| 标题 | 使用Poco C++库创建websocket安全访问(wss)客户端 |
| 范文 | 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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