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- 1970-1-1
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用法是启动它然后输入URL(前缀必须是HTTP://)
不要在意乱码。因为我并没有对文字编码进行处理。遇到UTF-8就会出现乱码。
但是它实现了浏览器最基本的功能:访问服务器,得到网页。
这里是代码,请收下。- #include<stdio.h>
- #include<winsock2.h>
- #define BUF_SIZE 0x2000
- int main(int argc,char**argv)
- {
- WSADATA wsaData;
- char szUrl[0x1000]={0};
- char szBuf[BUF_SIZE+1]={0};
- if(WSAStartup(WINSOCK_VERSION,&wsaData))
- {
- fputs("初始化Winsock失败。\n",stderr);
- return 1;
- }
- for(;;)
- {
- char *pDir=NULL;
- struct hostent* hAddr=NULL;
- SOCKADDR_IN sAddr={0};
- SOCKET sConnect=INVALID_SOCKET;
- int nSendLen=0;
- int nRecv=0;
- printf("请输入网址。\n");
- gets(szUrl);
- if(!strlen(szUrl))
- {
- fputs("没有输入网址,程序退出。\n",stderr);
- goto BadEnd;
- }
- if(strnicmp(szUrl,"http://",7))
- {
- fputs("请输入以http://开头的网址……\n",stderr);
- continue;
- }
- if(pDir=strchr(szUrl+7,'/'))
- {
- *pDir++=0;
- printf("网址:%s\n目录:%s\n",szUrl+7,pDir);
- }
- else
- printf("网址:%s\n",szUrl+7);
- hAddr=gethostbyname(szUrl+7);
- if(!hAddr)
- {
- fprintf(stderr,"域名解析失败。\nWSAGetLastError=%u\n",WSAGetLastError());
- continue;
- }
- printf("目标IP地址:%u.%u.%u.%u\n",
- (unsigned char)(hAddr->h_addr_list[0][0]),
- (unsigned char)(hAddr->h_addr_list[0][1]),
- (unsigned char)(hAddr->h_addr_list[0][2]),
- (unsigned char)(hAddr->h_addr_list[0][3]));
- sAddr.sin_family=AF_INET;
- sAddr.sin_port=htons(80);
- sAddr.sin_addr.s_addr=*(u_long*)(hAddr->h_addr_list[0]);
- sConnect=socket(AF_INET,SOCK_STREAM,0);
- if(sConnect==INVALID_SOCKET)
- {
- fprintf(stderr,"无法创建SOCKET套接字。\nWSAGetLastError=%u\n",WSAGetLastError());
- goto BadEnd;
- }
- if(connect(sConnect,(SOCKADDR*)&sAddr,sizeof(sAddr)))
- {
- fprintf(stderr,"无法连接。\nWSAGetLastError=%u\n",WSAGetLastError());
- closesocket(sConnect);
- continue;
- }
- if(!pDir)
- pDir="";
- sprintf(szBuf,
- "GET /%s HTTP/1.1\n"
- "Accept: text/html, application/xhtml+xml, */*\n"
- "Accept-Language: zh-CN\n"
- "User-Agent: Mozilla/5.0 (Windows NT 6.1; Trident/7.0; rv:11.0) like Gecko\n"
- //"Accept-Encoding: gzip, deflate\n"
- "Host: %s\n"
- "DNT: 1\n"
- "Connection: Keep-Alive\n"
- "\n"
- ,pDir,szUrl+7);
- nSendLen=strlen(szBuf)+1;
- if(send(sConnect,szBuf,nSendLen,0)!=nSendLen)
- fprintf(stderr,"不能完整发送数据包。\nWSAGetLastError=%u\n",WSAGetLastError());
- do
- {
- memset(szBuf,0,BUF_SIZE);
- nRecv=recv(sConnect,szBuf,BUF_SIZE,0);
- if(nRecv==SOCKET_ERROR)
- nRecv=BUF_SIZE;
- fwrite(szBuf,1,nRecv,stdout);
- printf("%s",szBuf);
- }while(nRecv==BUF_SIZE);
- puts("\n");
- closesocket(sConnect);
- }
- WSACleanup();
- return 0;
- BadEnd:
- WSACleanup();
- return 1;
- }
复制代码 这里是工程文件的下载地址。 |
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