Re: [libmicrohttpd] upgraded connections remain suspended when using MHD_USE_THREAD_PER_CONNECTION

[Evgeny Grin]

On 10.05.2017 11:21, Dom F wrote:
> I'm using MHD versions 0.9.54 and latest from git on both FreeBSD 11 and
> Linux (I think CentOS 7 with v3.10 kernel).
> No extra args to ./configure on Linux.
> HTTPS,  gnutls and libgcrypt related args to ./configure on FreeBSD.
> 
> My MHD_UpgradeHandler creates a new thread, immediately detached, which
> does the following:
> 
> Put socket into blocking mode
> Loop doing read() and processing received data until error, EOF or
> "close" websocket frame
> Call MHD_upgrade_action(urh, MHD_UPGRADE_ACTION_CLOSE)
> Exit thread
> 
> It is also possible that I might call "shutdown(sock, SHUT_RDWR)" from
> another thread to cause above loop to exit.

By your shutdown() of socket you breaking MHD internal processing.
It mostly relevant to HTTPS processing, didn't recheck HTTP code.
But I suggest you do not shutdown "upgraded" socket.
Probably we need to update documentation to reflect it.

Could you try without shutdown() of socket?

-- 
Best Wishes,
Evgeny Grin