https://bugs.winehq.org/show_bug.cgi?id=42377
--- Comment #1 from Evgeniy Polyakov zbr@ioremap.net --- FYI I've just committed binary server into github page, it is statically linked so you should run it in test environment without need to install and patch golang
When you see something like WSASend: fd: 148, buf: {Len:13 Buf:0x5b524000}, qty: 37, len: 13, o: {Internal:0 InternalHigh:13 Offset:0 OffsetHigh:0 HEvent:0}, e: <nil>, r1: 0, e1: 0
in the logs, it means that 13-bytes buffer has been sent to WSASend(), but it returned 37 bytes in lpNumberOfBytesSent