Can browser split up payload data into multiple websocket frames?

Question

In javascript below i send up to 200 bytes through websocket (after connecting and handshaking ):

     buf= new Uint8Array(200);
     /* filling buf with data*/
     ws.send(buf.buffer);

On the other side there is a simple iocp c++ server, which receive these 200 bytes preceded by few bytes of websocket frame.

Can i assume that browser always send these 200 bytes(+ websocket head) in one piece? Or should I always on server side check if this is final frame (by checking first bit in websocket head)?

thanks in advance for yours tips.

Answer 1

您应该始终检查FIN位，根据RFC6455，浏览器很可能会拆分有效负载（取决于Web套接字框架的某些上限）。