模拟HTTP请求， POST方法（附源码）

Fiddler是一款免费的Http抓包工具，功能强大，可与商业软件媲美。下载地址：

http://www.fiddlertool.com/fiddler/version.asp

#include <afxwin.h>
#include <stdio.h>
#include <windows.h>
#include "Wininet.h"
#include <WinSock2.h>

#pragma comment(lib,"Wininet.lib")
#pragma comment(lib,"nafxcwd.lib")
#pragma comment(lib, "ws2_32.lib")

//模拟浏览器发送HTTP请求函数
CString HttpRequest(TCHAR * lpHostName,short sPort,TCHAR * lpUrl,TCHAR * lpMethod,TCHAR * lpPostData,int nPostDataLen)
{
HINTERNET hInternet,hConnect,hRequest;
BOOL bRet;
CString strResponse;
FILE * fp ;
static TCHAR *accept = _T("Accept: */*");
TCHAR hdrs[] = L"Content-Type: application/x-www-form-urlencoded"
L"Accept-Language: zh-cn"
L"Accept-Encoding: gzip, deflate"
L"Pragma: no-cache";

hInternet = InternetOpen(L"User-Agent",INTERNET_OPEN_TYPE_PRECONFIG,NULL,NULL,0);
if(!hInternet)
goto Ret0;

hConnect = InternetConnect(hInternet,lpHostName, INTERNET_DEFAULT_HTTP_PORT,NULL, NULL, INTERNET_SERVICE_HTTP,0,1);
if(!hConnect)
goto Ret0;

hRequest = HttpOpenRequest(hConnect, lpMethod, lpUrl, L"HTTP/1.1", NULL, NULL, INTERNET_FLAG_RELOAD, 1);
DWORD erro = GetLastError();
if(!hRequest)
goto Ret0;

bRet = HttpSendRequest(hRequest,hdrs, wcslen(hdrs), "key=love&go=go&y=1",strlen("key=love&go=go&y=1"));

fp = fopen("C://a.html","w");
while(TRUE)
{
char cReadBuffer[4096];
unsigned long lNumberOfBytesRead;
bRet = InternetReadFile(hRequest,cReadBuffer,sizeof(cReadBuffer) - 1,&lNumberOfBytesRead);
if(!bRet || !lNumberOfBytesRead)
break;
cReadBuffer[lNumberOfBytesRead] = 0;
strResponse = strResponse + cReadBuffer;
fwrite(cReadBuffer,lNumberOfBytesRead,1,fp);
}
fclose(fp);

Ret0:
if(hRequest)
InternetCloseHandle(hRequest);
if(hConnect)
InternetCloseHandle(hConnect);
if(hInternet)
InternetCloseHandle(hInternet);

return strResponse;
}

void main(int argc, char *argv[])
{

CString strResponse = HttpRequest(L"lrc.bzmtv.com",80,L"/So.asp", L"POST", L"key=love&go=go&y=1",wcslen(L"key=love&go=go&y=1"));

}

自己慢慢看吧，GET方法更简单，在此不表。

还有一个socket api版本，代码如下：

#include <stdio.h>
#include "winsock.h"
#pragma comment(lib,"ws2_32.lib")
#define winsock_version 0x0101

void main()
{
//I create C:/Inetpub/wwwroot/test/test.asp ,start the web service
//start my program, the result is OK.
//If it works,it is written by masterz,otherwise I don't know who write it.
SOCKADDR_IN saServer;
LPHOSTENT lphostent;
WSADATA wsadata;
SOCKET hsocket;
int nRet;
const char* host_name="lrc.bzmtv.com";
char* req="POST /So.asp HTTP/1.1/r/n"
//"From: local/r/n"
"Accept: */* /r/n"
"Content-Type: application/x-www-form-urlencoded/r/n"
"Accept-Language: zh-cn/r/n"
"Accept-Encoding: gzip, deflate/r/n"
"User-Agent: post_test/1.1/r/n"
"Content-Length: 18/r/n"
"Host: lrc.bzmtv.com/r/n"
"Pragma: no-cache/r/n/r/n"
"key=love&go=go&y=1/r/n";
if(WSAStartup(winsock_version,&wsadata))
printf("can't initial socket");
lphostent=gethostbyname(host_name);
if(lphostent==NULL)
printf("lphostent is null");
hsocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
saServer.sin_family = AF_INET;
// Use def. now, need to handle general case
saServer.sin_port = htons(80);
saServer.sin_addr = *((LPIN_ADDR)*lphostent->h_addr_list);
nRet = connect(hsocket, (LPSOCKADDR)&saServer, sizeof(SOCKADDR_IN));
if (nRet == SOCKET_ERROR)
{
printf("can't connect");
closesocket(hsocket);
return;
}
else
printf("connected with %s/n",host_name);
nRet = send(hsocket, req, strlen(req), 0);
if (nRet == SOCKET_ERROR)
{
printf("send() failed");
closesocket(hsocket);

}
else
printf("send() OK/n");
char dest[1000];
nRet=1;
FILE *fp;
fp = fopen("C://a.html", "w");
while(nRet>0)
{
nRet=recv(hsocket,(LPSTR)dest,sizeof(dest),0);
if(nRet>0)
dest[nRet]=0;
else
dest[0]=0;

fwrite(dest, nRet, 1, fp);
printf("/nReceived bytes:%d/n",nRet);
printf("Result:/n%s",dest);
}

fclose(fp);
}