如何使用TIdHTTPProxyServer（代理链）将请求转发到另一个代理服务器

Question

目前我想让我的indy代理服务器将请求转发给另一个代理服务器。我找到this link并亲自试了一下。但是我的代码没有任何错误消息就行不通，好像我没有做任何改动。我的代码如下所示在C ++ XE2中。

void __fastcall TForm3::MyProxyHTTPBeforeCommand(TIdHTTPProxyServerContext *AContext)
{
    TIdIOHandlerStack* tempIO = new TIdIOHandlerStack(NULL);

    TIdConnectThroughHttpProxy* tempProxy = new TIdConnectThroughHttpProxy(NULL);
    tempProxy->Enabled = true;
    tempProxy->Host = "localhost";
    tempProxy->Port = 8181 ;
    tempIO->TransparentProxy  =  tempProxy;
    AContext->OutboundClient->IOHandler =  tempIO;

}

Answer 1

最后我发现我做了一些愚蠢的事。正确的代码应该如下......

void __fastcall TForm3::MyProxyHTTPBeforeCommand(TIdHTTPProxyServerContext *AContext)
{
    TIdIOHandlerStack* tempIO = new TIdIOHandlerStack(AContext->OutboundClient);

    TIdConnectThroughHttpProxy* tempProxy = new TIdConnectThroughHttpProxy(AContext->OutboundClient);
    tempProxy->Enabled = true;
    tempProxy->Host = "localhost";
    tempProxy->Port = 8181 ;
    tempIO->TransparentProxy  =  tempProxy;
    AContext->OutboundClient->IOHandler =  tempIO;