https://github.com/skywind3000/kcp/blob/7f9805887b0909c52c825925f123e7a84da37167/ikcp.c#L512 ikcp_send should limit mss*255, but this IKCP_WND_REC change to 128. So the current limit is mss*127
kcp/ikcp.c
Line 512 in 7f98058
ikcp_send should limit mss255, but this IKCP_WND_REC change to 128. So the current limit is mss127