winhttp: Pass server initiated websocket close request to application.

dlls/winhttp/request.c

@@ -3591,6 +3591,8 @@ static DWORD receive_close_status( struct socket *socket, unsigned int len )
 
 static DWORD handle_control_frame( struct socket *socket )
 {
+    DWORD ret;
+
     TRACE( "opcode %u.\n", socket->opcode );
 
     switch (socket->opcode)
@@ -3602,7 +3604,7 @@ static DWORD handle_control_frame( struct socket *socket )
         return socket_drain( socket );
 
     case SOCKET_OPCODE_CLOSE:
-        if (socket->state != SOCKET_STATE_CLOSED)
+        if (socket->state < SOCKET_STATE_SHUTDOWN)
             WARN( "SOCKET_OPCODE_CLOSE received, socket->state %u.\n", socket->state );
         if (socket->close_frame_received)
         {
@@ -3610,9 +3612,9 @@ static DWORD handle_control_frame( struct socket *socket )
             return ERROR_WINHTTP_INVALID_SERVER_RESPONSE;
         }
 
-        receive_close_status( socket, socket->read_size );
+        ret = receive_close_status( socket, socket->read_size );
         socket->read_size = 0;
-        return ERROR_WINHTTP_INVALID_SERVER_RESPONSE;
+        return ret;
 
     default:
         ERR("unhandled control opcode %02x\n", socket->opcode);
@@ -3654,7 +3656,8 @@ static DWORD socket_receive( struct socket *socket, void *buf, DWORD len, DWORD
         {
             if (!(ret = receive_frame( socket, &socket->read_size, &socket->opcode )))
             {
-                if (!(socket->opcode & CONTROL_BIT) || (ret = handle_control_frame( socket ))) break;
+                if (!(socket->opcode & CONTROL_BIT) || (ret = handle_control_frame( socket ))
+                    || socket->opcode == SOCKET_OPCODE_CLOSE) break;
             }
             else if (ret == WSAETIMEDOUT) ret = socket_send_pong( socket );
             if (ret) break;