摘要：
Http1.1中 使用 chunked 编码传送时 没有CONTENT_LENGTH,下载之前无法确定要下载的大小. Wininet中已经内嵌该传输协议,要查看chunked块的大小只能socket底层编写获取报文. Wininet能不能直接访问原报文需走旁路. =0){printf("WSAStartupfailed:%d",bytesRecv);return1;}if(LOBYTE(wsaData.wVersion)!=2||HIBYTE(wsaData.wVersion)!=2){WSACleanup();return1;}strcpy(fname,"index.html");_unlink(fname);charhost[]={"www.baidu.com"};hostent*ht=gethostbyname(host);structin_addrip_addr;memcpy(&ip_addr,ht-˃h_addr_list[0],4);SOCKETsockClient=socket(AF_INET,SOCK_STREAM,0);SOCKADDR_INaddrSrv;addrSrv.sin_addr=ip_addr;addrSrv.sin_family=AF_INET;addrSrv.sin_port=htons(80);charip[20];sprintf(ip,"%d.%d.%d.%d",addrSrv.sin_addr.S_un.S_un_b.s_b1,addrSrv.sin_addr.S_un.S_un_b.s_b2,addrSrv.sin_addr.S_un.S_un_b.s_b3,addrSrv.sin_addr.S_un.S_un_b.s_b4);printf("host:%sip:%s",host,ip);bytesRecv=connect(sockClient,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));if(bytesRecv==SOCKET_ERROR){WSACleanup();return1;}charrecvBuf[1024];char*protocolHead="GET/HTTP/1.1""Host:www.baidu.com""Accept:*/*""User-Agent:Mozilla/4.0(compatible;MSIE5.00;Windows98)""Connection:close";bytesRecv=send(sockClient,protocolHead,strlen(protocolHead)+1,0);printf("requestheaders:%s",protocolHead);intic=0;while(bytesRecv!=SOCKET_ERROR){memset(recvBuf,0,1024);bytesRecv=recv(sockClient,recvBuf,1024,0);if(ic==0)printf("responseheaders[%ld]:%s",bytesRecv,recvBuf);if(ic==1)printf("body[%ld]:%s",bytesRecv,recvBuf);ic++;if(bytesRecv==0||bytesRecv==WSAECONNRESET){printf("ConnectionClosed.");break;}logFile(recvBuf,bytesRecv);}closesocket(sockClient);WSACleanup();return0;}voidlogFile(char*p,intlen){FILE*fp=fopen(fname,"a+");if(!
// socket_http.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include#include #pragma warning(disable:4996) #pragma warning(disable:4267) #pragma comment(lib, "WS2_32.lib") void logFile(char *p,int len); char fname[100]; int main() { WORD wVersionRequested; WSADATA wsaData; int bytesRecv; //Initialize Winsock wVersionRequested = MAKEWORD(2,2); bytesRecv = WSAStartup(wVersionRequested,&wsaData); if(bytesRecv != 0) { printf("WSAStartup failed: %d ", bytesRecv); return 1; } if(LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2) { WSACleanup(); return 1; } strcpy(fname,"index.html"); _unlink(fname); char host[] = {"www.baidu.com"}; hostent * ht = gethostbyname(host); struct in_addr ip_addr; memcpy(&ip_addr,ht->h_addr_list[0],4); SOCKET sockClient = socket(AF_INET,SOCK_STREAM,0); SOCKADDR_IN addrSrv; addrSrv.sin_addr = ip_addr; addrSrv.sin_family = AF_INET; addrSrv.sin_port = htons(80); char ip[20]; sprintf(ip,"%d.%d.%d.%d", addrSrv.sin_addr.S_un.S_un_b.s_b1, addrSrv.sin_addr.S_un.S_un_b.s_b2, addrSrv.sin_addr.S_un.S_un_b.s_b3, addrSrv.sin_addr.S_un.S_un_b.s_b4); printf("host:%s ip:%s ",host,ip); bytesRecv = connect(sockClient,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR)); if( bytesRecv == SOCKET_ERROR) { WSACleanup(); return 1; } char recvBuf[1024]; char* protocolHead= "GET / HTTP/1.1 " "Host:www.baidu.com " "Accept:*/* " "User-Agent:Mozilla/4.0 (compatible; MSIE 5.00; Windows 98) " "Connection:close "; bytesRecv = send(sockClient,protocolHead,strlen(protocolHead)+1,0); printf("request headers: %s ",protocolHead); int ic=0; while( bytesRecv != SOCKET_ERROR ) { memset(recvBuf,0,1024); bytesRecv = recv(sockClient,recvBuf,1024,0); if(ic==0) printf("response headers[%ld]: %s ",bytesRecv,recvBuf); if(ic==1) printf("body [%ld]: %s",bytesRecv,recvBuf); ic++; if ( bytesRecv == 0 || bytesRecv == WSAECONNRESET ) { printf( "Connection Closed. "); break; } logFile(recvBuf,bytesRecv); } closesocket(sockClient); WSACleanup(); return 0; } void logFile(char *p,int len) { FILE *fp = fopen(fname,"a+"); if(!fp) return; fwrite(p,1,len,fp); fclose(fp); } ---------------------------------------------------------------------- 运行结果 host:www.baidu.com ip:119.75.218.77 request headers: GET / HTTP/1.1 Host:www.baidu.com Accept:*/* User-Agent:Mozilla/4.0 (compatible; MSIE 5.00; Windows 98) Connection:close response headers[633]: HTTP/1.1 200 OK Date: Sun, 13 Apr 2014 18:24:51 GMT Content-Type: text/html; charset=utf-8 Transfer-Encoding: chunked Connection: Close Vary: Accept-Encoding Set-Cookie: BAIDUID=10AA88D7B6D34E65F9FF8A384BE63FE9:FG=1; expires=Thu, 31-Dec-37 23:55:55 GMT; max-age=2147483647; path=/; domain=.baidu.com Set-Cookie: BDSVRTM=0; path=/ Set-Cookie: H_PS_PSSID=5778_5991_1421_5225_5848_4760_6017_5856_5918; path=/; domain=.baidu.com P3P: CP=" OTI DSP COR IVA OUR IND COM " Cache-Control: private Expires: Sun, 13 Apr 2014 18:24:20 GMT X-Powered-By: HPHP Server: BWS/1.1 BDPAGETYPE: 1 BDQID: 0x875baba2004f0570 BDUSERID: 0 body [1024]: d27b