How do I set proxy settings in Winhttp?
I have tried setting proxy setting via Winhttp like this: function SetProxySettings(const aURL:string; const aHostName:string; const aPortNumber:integer):boolean;. var. WHTTP:HINTERNET;. IHTTPS:ITransportSecuritySettings2;. begin. Result := false;. // set http proxy server. WHTTP := CreateWinHttpEnvironment('MYDOMAIN');. if WHTTP <> nil then. IHTTPS := WHTTP.OpenRequest('GET', PChar(aURL), nil, 'MYDOMAIN', nil, 0); try. IHTTPS.Proxy := 'MYPROXY'; IHTTPS.ProxyPort := aPortNumber; IHTTPS.ProxyType := wHTTPPROXYTYPESOCKS4; IHTTPS.ProxyUsername := 'MYUSER'; IHTTPS.ProxyPassword := 'MYPASSWORD'; if (IHTTPS.Open() = SOK) then Result := true;. end. else. end;. finally. IHTTPS := nil;. // set https proxy server. WHTTP := CreateWinHttpEnvironment('MYDOMAIN');
What is Winhttp proxy settings?
The Winhttp proxy settings has the main purpose to specify which protocol to use to communicate with a web site or a server.
For example, the Winhttp proxy settings can be used to specify that HTTP traffic should be proxied through the Winhttp proxy server or that traffic destined for the Winhttp proxy server should be sent to the server. The Winhttp proxy settings can be used to specify proxy settings for a single protocol. To configure Winhttp proxy settings, follow these steps: Open the System Properties dialog box. Select Internet Options from the View menu. Select the Connections tab. Select Settings button. Select the LAN settings tab. Under the Connection list, select LAN Settings. In the Network settings dialog box, select the LAN settings button. The Winhttp proxy settings will appear in the Winhttp proxy settings list box. The Winhttp proxy settings are used to define the following: The protocol (for example, HTTP or FTP) to use to communicate with the web site or server. The domain name or IP address of the web site or server. The Winhttp proxy server that is used to communicate with the web site or server. The Winhttp proxy server's port number. The Winhttp proxy server's IP address. The Winhttp proxy server's authentication method. The Winhttp proxy server's authentication credentials. The Winhttp proxy server's timeout value. The Winhttp proxy server's authentication token. For example, you can specify that the Winhttp proxy server communicates with the web site using the HTTP protocol and uses the IP address of the Winhttp proxy server to communicate with the web site. You can also specify that the Winhttp proxy server communicates with the web site using the FTP protocol, that the Winhttp proxy server uses port number 21, and that the Winhttp proxy server authenticates using the username and password credentials. Select the Winhttp proxy settings list box. The following table lists the Winhttp proxy settings. Field. Description. Protocol. This field specifies the protocol to use to communicate with the web site or server. For example, if you want to specify that the Winhttp proxy server communicates with the web site using the HTTP protocol, select HTTP.
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