如何自己发送http请求包?高手请进！

Question

我看了http请求包的格式,我想做一个程序向web服务器发送http请求包的内容.
包的格式就应该是:
get / http/1.1
accept: */*
…………
我想自己发送一些这样的字符串给web服务器，按照http请求的格式。
但是我能够从web服务器上收到发回的数据吗？

Answer 1

当然可以
//Get html page by SDK socket
#define host_name "www.csdn.net"
#define winsock_version 0x0101
void main()
{
    SOCKADDR_IN saServer;
LPHOSTENT lphostent;
WSADATA wsadata;
    SOCKET hsocket;
int nRet;
    char hostname[100] ;
wsprintf(hostname,"GET /expert/topic/378/378382.shtm HTTP/1.0 %c%c",10,10);
printf("%s",hostname);
char dest[1000];
if(WSAStartup(winsock_version,&wsadata))
printf("can't open");
    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, hostname, strlen(hostname), 0);
if (nRet == SOCKET_ERROR)
{
printf("send() failed");
closesocket(hsocket);

}
else
printf("send() OK\n");
nRet=1;
while(nRet>0)
{
nRet=recv(hsocket,(LPSTR)dest,sizeof(dest),0);
if(nRet>0)
dest[nRet]=0;
else
dest[0]=0;
printf("\nReceived bytes:%d\n",nRet);
printf("Result:\n%s",dest);
}

}///////////////////////////////////////////////////////////////////////////
//SDK post
///////////////////////////////////////////////////////////////////////////
#include "stdafx.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="127.0.0.1";
char* req="POST /test/test.asp HTTP/1.0\r\n"
"From: local\r\n"
"User-Agent: post_test/1.0\r\n"
"Content-Type: application/x-www-form-urlencoded\r\n"
"Content-Length: 20\r\n\r\n"
"type=12345&name=aaaa";
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;
while(nRet>0)
{
nRet=recv(hsocket,(LPSTR)dest,sizeof(dest),0);
if(nRet>0)
dest[nRet]=0;
else
dest[0]=0;
printf("\nReceived bytes:%d\n",nRet);
printf("Result:\n%s",dest);
}
}