純C++ 簡易GET/POST

資料來源:http://0cx.cc/c_sock_http.jspx

C++ 實現HTTP POST請求
HTTP POST方式是把請求參數放到HTTP請求報文的請求資料中，為了讓例子更容易看懂，僅保留HTTP Post關鍵參數，你還可以自訂一些參數，比如流覽器喜歡用的User-Agent，Accept，Connection等等
char *pHttpPost = “POST %s HTTP/1.1\r\n” 
    “Host: %s:%d\r\n” 
    “Content-Type: application/x-www-form-urlencoded\r\n” 
    “Content-Length: %d\r\n\r\n” 
    “%s”;  
   
char* addr = “http://localhost/post.php”;  
char* host = “127.0.0.1”;  
int port = 80;  
char* msg = “aaa=1&bbb=2”;  
   
char strHttpPost[1024] = {0};  
sprintf(strHttpPost, pHttpPost, addr, host, port, strlen(msg), msg);  
   
//這裡忽略掉了socket連接代碼  
   
send(sockClient, strHttpPost, strlen(strHttpPost), 0);

 

C++ 實現HTTP GET請求
HTTP GET方式是把請求參數放到HTTP請求報文的請求行URL中，所以請求行就是“GET /?aaa=1&bbb=2 HTTP/1.1\r\n”。URL最大長度通常流覽器取255，這和檔路徑最大長度有關。雖然HTTP允許更大長度，但不建議怎麼做，如果太長了，可以考慮換成POST方式
char *pHttpGet = “GET %s?%s HTTP/1.1\r\n” 
    “Host: %s:%d\r\n\r\n”;  
   
char* addr = “http://localhost/get.php”;  
char* host = “127.0.0.1”;  
int post = 80;  
char* msg = “aaa=1&bbb=2”;  
   
char strHttpGet[1024] = {0};  
sprintf(strHttpGet, pHttpGet, addr, msg,  host, post);  
   
//這裡忽略掉了socket連接代碼  
   
send(sockClient, strHttpGet, strlen(strHttpGet), 0);