winsock請求http

標籤：ada   har   ast   scan   readline   i++   null   argv   inet_addr   

int socket_readline(SOCKET socket,char *head)  {      char c = ‘\0‘;      int r = 0,i = 0;      while(recv(socket,&c,1,0)>0)      {          if(r == 1)          {              if(c == ‘\n‘)              {                  break;              }              else              {                  r = 0;              }          }          else if(c == ‘\r‘)          {              r = 1;          }          else head[i++] = c;      }      head[i] = ‘\0‘;      if(strcmp(head,"\r\n") == 0) return -1;      else return i;  }  int main(int argc, char* argv[]){WSADATA wsaData;WORD sockVersion = MAKEWORD(2,0);WSAStartup(sockVersion,&wsaData);SOCKET s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);if(s==INVALID_SOCKET){return -1;}sockaddr_in servAddr;servAddr.sin_family=AF_INET;servAddr.sin_port=htons(80);   servAddr.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");if(connect(s,(sockaddr*)&servAddr,sizeof(servAddr))==-1){return -1;}char *httpHead = "GET / HTTP/1.1\r\n""Host: 127.0.0.1\r\n"          "Connection: Keep-Alive\r\n"  "\r\n";send(s,httpHead,strlen(httpHead),0);char *http_head_recv = new char[3000];      int Content_Length = 0;      for(int flag=1;flag>0;)      {          memset(http_head_recv,0,3000);          flag = socket_readline(s,http_head_recv);          if(strstr(http_head_recv,"Content-Length:") != NULL){              sscanf(http_head_recv,"Content-Length: %d",&Content_Length);          }          printf("%s\n",http_head_recv);      }      free(http_head_recv);if(Content_Length>0){char *msg = new char[Content_Length+1];memset(msg,0,Content_Length+1);recv(s,msg,Content_Length,0);msg[Content_Length] = ‘\0‘;printf("%s\n",msg);free(msg);}closesocket(s);WSACleanup();return 0;}

　　

winsock請求http