http: handle webcosket close via THttpServer::SubmitHttp
http: handle webcosket close via THttpServer::SubmitHttp

Do not try to process websocket close synchronousely. 
It is anyway last action with websocket and does not require that
calling thread blocks. Additional protection for the case of shutdown 
of THttpServer with running websockets

karies/root,root-mirror/root,karies/root,root-mirror/root,olifre/root,karies/root,root-mirror/root,olifre/root,root-mirror/root,olifre/root,olifre/root,karies/root,karies/root,karies/root,olifre/root,root-mirror/root,olifre/root,olifre/root,root-mirror/root,olifre/root,karies/root,root-mirror/root,karies/root,karies/root,root-mirror/root,root-mirror/root,karies/root,olifre/root,olifre/root,karies/root,root-mirror/root,root-mirror/root,olifre/root