Update http.c

http.c

@@ -487,6 +487,16 @@ void tcp_in(conn_t *in)
                     free(host);
                     return;
                 }
+                else
+                {
+                    //如果是CONNECT代理HTTP  需要再次获取host
+                    char *host_save = host;
+                    host = get_host(in->incomplete_data);
+                    if (host)
+                        free(host_save);
+                    else
+                        host = host_save;
+                }
             }
             else
             {