Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Add an HttpProxyClient for use with the various protocol clients

See original GitHub issue

Describe the bug I have successfully tested the mailkit imap class with 2 differents imap account (outlook and gmail) without using proxy I am not able to connect to our http proxy in any mode, i don’t have a socks proxy. The connection to the proxy is Ok but when i call the connect method i have the error posted below. This is the code i have used. What i am doing wrong?

To Reproduce

client = new ImapClient(new ProtocolLogger("imap.log"))
                {
                    ServerCertificateValidationCallback = (s, c, h, e) => true,
                    CheckCertificateRevocation = false
                };
string proxyServer = "192.168.16.19";
                int proxyPort = 8080;
                string proxyUsername = "admin";
                string proxyPassword = "password";
                string b64UserPwd = Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(proxyUsername + ":" + proxyPassword));
                Socket mySocket = new Socket(SocketType.Stream, ProtocolType.Tcp);
                mySocket.Connect(proxyServer,proxyPort);
                string connectMsg = string.Format("CONNECT {0}:{1} HTTP/1.0\r\n" + "Proxy-Authorization: Basic {2}\r\n" + "\r\n", 
                    proxyServer, 
                    proxyPort,
                    b64UserPwd);
                byte[] msg = Encoding.UTF8.GetBytes(connectMsg);
                mySocket.Send(msg);
                string proxyConnectionResponseHeader = "";
                while (!proxyConnectionResponseHeader.Contains("\r\n\r\n"))
                {
                    byte[] buffer = new byte[1];
                    mySocket.Receive(buffer, 0, 1, 0);
                    proxyConnectionResponseHeader += Encoding.ASCII.GetString(buffer);
                }
                if (!proxyConnectionResponseHeader.Contains("200 Connection established"))
                {
                    throw new Exception("Connection to Proxy Failed: " + proxyConnectionResponseHeader);
                }

 var mode = _appModel.UseSSL ? SecureSocketOptions.SslOnConnect :                                                 SecureSocketOptions.None;
                    client.Connect(mySocket,
                        _appModel.Server,
                        _appModel.Port,
                        mode);

Screenshots