HttpSendRequest的阻塞问题?

[CCliveHunter]

遇到这样一个问题，写了一个程序发送一个Http包到服务器，数据又服务器上的asp处理，开始程序是Win32 Applacation工程的，没有任何问题，后来由于需求将Win32 Applacation程序改成Win32 Dll 工程，由一个控台程序LoadLibrary来实现发送http包功能，就会出现HttpSendRequest阻塞不动了，此时机器连网页都打不开，谁遇到过侧类奇怪的问题能指点一下，如果哪位高手好心帮助调试一下，不胜感谢！！！
Win32 Dll 工程代码如下：

#include "stdafx.h"
#include "windows.h"
#include "stdio.h"
#include "iostream.h"
#include <wininet.h>

#pragma  comment(lib, "Wininet.lib")



BOOL SendRequest(char *URL, char *CgiName, int iPort,
					char *TransData, int TransDataLen,
					char *RetBuffer, DWORD *pdwRetBufferSize,DWORD *pdwBytesRead)
{
	printf("In SendRequest,URL:%s,CfiName:%s,Port:%d\r\n",URL,CgiName,iPort);
	HINTERNET hSession=NULL;
	HINTERNET hConnect=NULL;
	HINTERNET hRequest=NULL;
	BOOL bSendRequest=FALSE;
	INT bSuccess=0;
	DWORD dwErrorCode;
	TransDataLen=0;
	hSession=InternetOpen(0,INTERNET_OPEN_TYPE_PRECONFIG,NULL,NULL,0);
	if (hSession!=NULL)
	{
		DWORD dwTimeout=4000;
		BOOL b_retSetOption=InternetSetOption(hSession,INTERNET_OPTION_CONNECT_TIMEOUT,&dwTimeout,sizeof(dwTimeout));
		if (!b_retSetOption)
		{
			dwErrorCode=GetLastError();
			cout<<"GetLastError_SetOption1: "<<dwErrorCode<<endl;
			goto ERRORCODE;
		}								
	}
	else
	{
		dwErrorCode=GetLastError();
		cout<<"GetLastError_InternetOpen: "<<dwErrorCode<<endl;
		goto ERRORCODE;
	}
	
	printf("In InternetConnect\r\n");
	//连接服务器
	hConnect=InternetConnect(hSession,URL,iPort,NULL,NULL,INTERNET_SERVICE_HTTP,0,0);
	if (!hConnect)
	{
		dwErrorCode=GetLastError();
		cout<<"GetLastError_InternetConnect: "<<dwErrorCode<<endl;
		goto ERRORCODE;
	}
	

	printf("In HttpOpenRequest\r\n");
	//创建一个请求
	hRequest=HttpOpenRequest(hConnect,"POST",CgiName,"HTTP/1.0",NULL,NULL,0,0);
	if (!hRequest)
	{
		dwErrorCode=GetLastError();
		cout<<"GetLastError_HttpOpenRequest: "<<dwErrorCode<<endl;
		goto ERRORCODE;
	}
	

	printf("In HttpSendRequest\r\n");
	//发送请求
	
	bSendRequest=HttpSendRequest(hRequest,"Content-Type: application/x-www-form-urlencoded\r\n",-1,TransData,TransDataLen);
	if (!bSendRequest)
	{
		dwErrorCode=GetLastError();
		cout<<"GetLastError_HttpSendRequest: "<<dwErrorCode<<endl;
		goto ERRORCODE;
	}
	

	printf("In InternetReadFile\r\n");
	//获得返回结果
	
	if (RetBuffer&&*pdwRetBufferSize>0)
	{
		DWORD dwReaded=0;
		char *p=RetBuffer;
		DWORD dwTotalBytesRead=0;
		while (TRUE)
		{
			Sleep(100);
			p=p+dwReaded;
			dwTotalBytesRead=dwTotalBytesRead+dwReaded;
			if (!InternetReadFile(hRequest,p,*pdwRetBufferSize,&dwReaded))
			{
				dwErrorCode=GetLastError();
				cout<<"GetLastError_InternetReadFile: "<<dwErrorCode<<endl;			
				goto ERRORCODE;
			}
			if (dwReaded==0)
			{
				break;
			}
			*pdwRetBufferSize=*pdwRetBufferSize-dwReaded;
		}
		*pdwBytesRead=dwTotalBytesRead;//返回实际读到的总字节数
	}
	else
	{
		goto ERRORCODE;
	}
	
	printf("Out InternetReadFile\r\n");
	//关闭
	if (hRequest)
		InternetCloseHandle(hRequest);
	if (hConnect)
		InternetCloseHandle(hConnect);
	if (hSession)
		InternetCloseHandle(hSession);
	
	return TRUE;
	
ERRORCODE:
	
	printf("Error\r\n");
	if (hRequest)
		InternetCloseHandle(hRequest);
	if (hConnect)
		InternetCloseHandle(hConnect);
	if (hSession)
		InternetCloseHandle(hSession);
	
	return FALSE;
}




BOOL APIENTRY DllMain( HANDLE hModule, 
                       DWORD  ul_reason_for_call, 
                       LPVOID lpReserved
					 )
{	
	char resu[1024]={0};
	DWORD dwBytesRead=0;
	char retBuf[1024]={0};
	DWORD dwRetBufLen=1024;
	switch (ul_reason_for_call)
	{
	case DLL_PROCESS_ATTACH:
		{		
			SendRequest("xxx.xxx.xxx.xxx", "xxx.asp", 80,resu, strlen(resu)+1,retBuf, &dwRetBufLen,&dwBytesRead);
		}
		break;
    }

    return TRUE;
}

控台程序只实现一个LoadLibrary的工程加载以上Dll就行

[Eleven]

DLL中导出一个接口函数，在接口函数中调用SendRequest()