Sam, Here is my code snippet to connect to a server without proxy, This code works fine I have tested it, my question is what changes I need to make if I have to go thru proxy to connect to server. Thanks, using boost::asio::ip::tcp; using namespace std; using namespace boost; CBoostSocket::Connect() { try { tcp::resolver *m_pResolver; tcp::socket *m_pSocket; boost::asio::streambuf request_; boost::asio::streambuf response_; boost::asio::io_service *m_pIOservice; boost::asio::ssl::context *m_pSSLContext; boost::asio::ssl::streamboost::asio::ip::tcp::socket *m_pSecureSocket; string m_host;//host url m_pIOservice = new boost::asio::io_service(); tcp::resolver resolver(*m_pIOservice); m_pSSLContext = new boost::asio::ssl::context(*m_pIOservice, boost::asio::ssl::context::sslv23_client); m_pSSLContext->set_verify_mode(boost::asio::ssl::context::verify_none); //by default connect directly string proxyOrHost(m_host); //CInternetSettings netSetting; boost::system::error_code error = boost::asio::error::host_not_found; tcp::resolver::iterator end; tcp::resolver::query query(proxyOrHost , "https"); tcp::resolver::iterator endpoint_iterator = resolver.resolve(query); // Try each endpoint until we successfully establish a connection. //boost::system::error_code error; m_pSecureSocket = new boost::asio::ssl::streamboost::asio::ip::tcp::socket(*m_pIOservice, *m_pSSLContext) ; //try to connect it directly first even though proxy is set, if fail try with proxy while (error && endpoint_iterator != end) { m_pSecureSocket->lowest_layer().close(); m_pSecureSocket->lowest_layer().connect(*endpoint_iterator++, error); if (!error) { m_pSecureSocket->handshake(boost::asio::ssl::stream_base::client, error); if(!error) { } else{ boost::system::error_code code = error; boost::system::system_error e(error); long lastResult = code.value(); string errorString = e.what(); m_pSecureSocket->lowest_layer().close(); ASSERT(!"Handshake failed: "); std::cout << "Handshake failed: " << error << "\n"; return ; } } else { boost::system::error_code code = error; boost::system::system_error e(error); long lastResult = code.value(); string errorString = e.what(); ASSERT(!"Connect failed: "); std::cout << "Connect failed: " << error << "\n"; m_pSecureSocket->lowest_layer().close(); return ; } } boost::asio::streambuf request; std::ostream request_stream(&request); request_stream << "POST" << " " << urlPath << " HTTP/1.0\r\n"; request_stream << "Host: " << m_host << "\r\n"; request_stream << "Accept: */*\r\n"; long contentLength = 0; const wchar_t *pPostParam; long paramLen; if(pPostParam && paramLen) { request_stream << "Content-Length: "; request_stream << boost::lexical_cast<string>(contentLength); request_stream << "\r\n"; } else { } request_stream << "Cache-Control: no-cache\r\n"; request_stream << "Connection: Close\r\n\r\n"; // Send the request. boost::system::error_code error; boost::asio::write(*m_pSecureSocket, request ); //Write post param if (error) throw boost::system::system_error(error); } catch(...) { } catch (boost::system::system_error &e){ //Handle Error } return S_OK; } Akhilesh Kumar From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Sam Miller Sent: Monday, August 30, 2010 12:43 PM To: boost-users@lists.boost.org Subject: Re: [Boost-users] boost::asio SSL connection thru proxy server Akilesh, Your question is not clear to me, what exactly does not work when using your proxy? Does the SSL handshake fail? Sam [cid:image001.gif@01CB4845.C28A2DD0]"Kumar, Akhilesh" ---08/30/2010 02:34:00 PM---Hi All, Considering that nobody replied my question I am wondering if anybody who has knowledge of t From: "Kumar, Akhilesh" To: "boost-users@lists.boost.org" Date: 08/30/2010 02:34 PM Subject: Re: [Boost-users] boost::asio SSL connection thru proxy server Sent by: boost-users-bounces@lists.boost.org ________________________________ Hi All, Considering that nobody replied my question I am wondering if anybody who has knowledge of this kind of problem has seen my previous message/question. I really need help on this issue if anybody has any thought on this pls. reply. Thanks, Akhilesh Kumar From: Kumar, Akhilesh Sent: Monday, August 23, 2010 5:10 PM To: 'boost-users@lists.boost.org' Subject: boost::asio SSL connection thru proxy server Hi, I am writing a boost socket client using boost::asio to do secure HTTP (HTTPS) communication. I Implemented my client based on the code sample based on (http://www.boost.org/doc/libs/1_39_0/doc/html/boost_asio/example/ssl/client....) with little changes as I am using sync socket. My client woks fine, when I am connecting to server directly, but I am not sure what changes I need to make when my communication going thru proxy. The unsecure connection(HTTP) work fine thru proxy, and here is what I do for unsecure connection, 1. Initialize boost socket(IO service and other stuff). 2. Resolve and Connect to Proxy server. 3. Start writing to actual server(HTTP send request). 4. Start uploading/downloading. 5. Close Socket. But I can’t use this above procedure for (SSL) secure connection as I need to do handshaking with the server before I can write anything if my understanding is correct. Can somebody give me some pointer or code sample or step I need to do when I am doing secure connection thru proxy server. Just to clarify Microsoft WinInet does do (secure) HTTPS connection thru same proxy fine. If providing my code sample I am using for SSL might help understand the problem I can provide that. Thanks in advance for any help. Akhilesh Kumar _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

Since I need to connect to secure server before I can do handshake, If I connect to proxy 1st (I will have to do this if I am going thru proxy) how do I connect to secure server for Handshake. If I connect to proxy and do handshake it does not make sense logically and it does fails("asio.ssl error") if I try doing this. So the question is If I connect to Proxy 1st how do I create another secure socket and connect it to secure server which know that it has to go thru proxy? This is the connection I want to established. SecureSocket -> Proxy ->SecureServer. Thanks, Akhilesh Kumar From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Sam Miller Sent: Monday, August 30, 2010 3:26 PM To: boost-users@lists.boost.org Subject: Re: [Boost-users] boost::asio SSL connection thru proxy server

"Kumar, Akhilesh"

Here is my code snippet to connect to a server without proxy, This code works fine I have tested it, my question is what changes I need to make if I have to go thru proxy to connect to server.

Why do you assume changes are required? Have you tried connecting to a proxy? Does it work using your existing code? Sam