Emscripten Using libC Socket, Assertion failed: undefined

Question

I have problem with example called "test_sockets_partial_client.c". All expect read data from server working, browser connect to server, send data to server, but when server response Console returns: Assertion failed: undefined.

Non-emscripten version of client written in pure Javascript by WebSocket Class, works great.

Someone have any idea ?

BTW. server is in C#, I send to client,

byte[] send = new byte[5 + 2];
send[0] = 0x81; // last frame, text
send[1] = 5; // not masked, length 5
send[2] = (byte)'x';
send[3] = (byte)'Y';
send[4] = (byte)'z';
send[5] = (byte)'A';
send[6] = (byte)'B';
client.Send(send);

Łukasz Mleczko Łukasz Mleczko · Accepted Answer · 2016-07-25T19:47:20

Problem with data type, raw sockets created through emscripten MUST BE binary. 0x81 is text data, 0x82 is binary data.

send[0] = 0x82; // last frame, BINARY

Emscripten Using libC Socket, Assertion failed: undefined

1 Answers