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  1. #if defined _WIN32 || defined _WIN64
  2. #include <winsock2.h>
  3. #include <ws2tcpip.h>
  4. #include <windows.h>
  5. #else
  6. #include <unistd.h>
  7. #include <sys/types.h>
  8. #include <sys/socket.h>
  9. #include <arpa/inet.h>
  10. #include <netinet/in.h>
  11. #include <netdb.h>
  12. #endif
  13.  
  14. #include <stdio.h>
  15. #include <string.h>
  16.  
  17. #define min(a, b) (((a)<(b))?(a):(b))
  18. #define max(a, b) (((a)>(b))?(a):(b))
  19.  
  20. #ifndef __cplusplus
  21. typedef enum {false, true} bool;
  22. #endif
  23.  
  24. typedef struct
  25. {
  26.     int sock;
  27.     const char* address;
  28.     unsigned short port;
  29. } sock_info;
  30.  
  31.  
  32. const char* GetHostLocation(char* Buffer, sock_info* info)
  33. {
  34.     const char* addr = strstr(info->address, "://");
  35.  
  36.     if (addr)
  37.         strcpy(Buffer, addr + 3);
  38.  
  39.     if ((addr = strstr(Buffer, "/")))
  40.         Buffer[addr - Buffer] = '\0';
  41.  
  42.     return addr ? Buffer : NULL;
  43. }
  44.  
  45. const char* GetRequestLocation(char* Buffer, sock_info* info)
  46. {
  47.     const char* addr = strstr(info->address, "://");
  48.  
  49.     if (Buffer)
  50.     {
  51.         if (addr)
  52.             strcpy(Buffer, addr + 3);
  53.  
  54.         if ((addr = strstr(Buffer, "/")))
  55.         {
  56.             strcpy(Buffer, addr + 1);
  57.         }
  58.     }
  59.     else
  60.     {
  61.         addr = strstr(addr + 3, "/");
  62.         return addr ? addr + 1 : NULL;
  63.     }
  64.  
  65.     return addr ? Buffer : NULL;
  66. }
  67.  
  68. bool init()
  69. {
  70.     #if defined _WIN32 || defined _WIN64
  71.     WSADATA wsaData = {0};
  72.     return !WSAStartup(MAKEWORD(2, 2), &wsaData);
  73.     #else
  74.     return true;
  75.     #endif
  76. }
  77.  
  78. void destroy(sock_info* info)
  79. {
  80.     #if defined _WIN32 || defined _WIN64
  81.     shutdown(info->sock, SD_BOTH);
  82.     closesocket(info->sock);
  83.     WSACleanup();
  84.     #else
  85.     shutdown(info->sock, SHUT_RDWR);
  86.     close(info->sock);
  87.     #endif
  88. }
  89.  
  90. bool setup(sock_info* info)
  91. {
  92.     char Buffer[512] = {0};
  93.     const char* address_str = info->address;
  94.     struct sockaddr_in* sockaddr_ipv4 = NULL;
  95.  
  96.     if (strncasecmp(address_str, "inaddr_any", min(strlen(info->address), 10)))
  97.     {
  98.         address_str = GetHostLocation(Buffer, info);
  99.  
  100.         struct addrinfo* it = NULL, *result = NULL;
  101.         getaddrinfo(address_str, NULL, NULL, &result);
  102.         for (it = result; it != NULL; it = it->ai_next)
  103.         {
  104.             sockaddr_ipv4 = (struct sockaddr_in*)it->ai_addr;
  105.             address_str = inet_ntoa(sockaddr_ipv4->sin_addr);
  106.  
  107.             if (strncmp(address_str, "0.0.0.0", 7))
  108.                 break;
  109.         }
  110.         freeaddrinfo(result);
  111.     }
  112.  
  113.     if ((info->sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
  114.     {
  115.         return false;
  116.     }
  117.  
  118.     struct sockaddr_in SockAddr;
  119.     memset(&SockAddr, 0, sizeof(SockAddr));
  120.     SockAddr.sin_port = htons(info->port);
  121.     SockAddr.sin_family = AF_INET;
  122.     SockAddr.sin_addr.s_addr = (!strncasecmp(address_str, "inaddr_any", 10) ? htonl(INADDR_ANY) : inet_addr(address_str));
  123.  
  124.     if (connect(info->sock, (struct sockaddr*)&SockAddr, sizeof(SockAddr)) < 0)
  125.     {
  126.         return false;
  127.     }
  128.  
  129.     return true;
  130. }
  131.  
  132. void CreateGetHeader(char* buffer, sock_info* info)
  133. {
  134.     const char* header =
  135.     {
  136.         "Connection: close\r\n"\
  137.         "User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.97 Safari/537.11\r\n"\
  138.         "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n"
  139.         "Accept-Language: en-US,en;q=0.8\r\n"\
  140.         "Accept-Charset: ISO-8859-1,UTF-8;q=0.7,*;q=0.7\r\n"\
  141.         "Cache-Control: no-cache\r\n"
  142.     };
  143.  
  144.     const char* Request = "GET /%s HTTP/1.1\r\n"\
  145.                          "Host: %s\r\n"\
  146.                          "%s\r\n";
  147.  
  148.     char HostBuffer[512] = {0};
  149.     sprintf(buffer, Request, GetRequestLocation(NULL, info), GetHostLocation(HostBuffer, info), header);
  150. }
  151.  
  152. int main()
  153. {
  154.     sock_info info = {0, "http://stackoverflow.com/questions/tagged/c%2b%2b", 80};
  155.  
  156.     if (init())
  157.     {
  158.         if (setup(&info))
  159.         {
  160.             char RequestBuffer[1024] = {0};
  161.             CreateGetHeader(RequestBuffer, &info);
  162.             send(info.sock, RequestBuffer, strlen(RequestBuffer), 0);
  163.             memset(&RequestBuffer, 0, sizeof(RequestBuffer));
  164.  
  165.             recv(info.sock, &RequestBuffer[0], sizeof(RequestBuffer), 0);
  166.             printf("%s", RequestBuffer);
  167.  
  168.             int bytes_read = 0;
  169.  
  170.             while(true)
  171.             {
  172.                 int read = recv(info.sock, RequestBuffer, sizeof(RequestBuffer), 0);
  173.                 if (read <= 0)
  174.                     break;
  175.  
  176.                 RequestBuffer[read] = NULL;
  177.                 printf("%s", RequestBuffer);
  178.  
  179.                 bytes_read += read;
  180.  
  181.                 if (bytes_read >= 88500)
  182.                     break;
  183.  
  184.                 memset(RequestBuffer, 0, sizeof(RequestBuffer));
  185.             }
  186.         }
  187.  
  188.         destroy(&info);
  189.     }
  190.  
  191.     return 0;
  192. }
  193.  
Success #stdin #stdout 0s 2552KB
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https://ideone.com/lAovHH
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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