mirror of
https://github.com/warmcat/libwebsockets.git
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f9f6bb66fe
Refactor everything around ping / pong handling in ws and h2, so there is instead a protocol-independent validity lws_sul tracking how long it has been since the last exchange that confirms the operation of the network connection in both directions. Clean out periodic role callback and replace the last two role users with discrete lws_sul for each pt.
101 lines
3.3 KiB
C
101 lines
3.3 KiB
C
/*
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* libwebsockets - small server side websockets and web server implementation
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*
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* Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include <private-lib-core.h>
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static int
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rops_handle_POLLIN_pipe(struct lws_context_per_thread *pt, struct lws *wsi,
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struct lws_pollfd *pollfd)
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{
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#if !defined(WIN32) && !defined(_WIN32)
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char s[100];
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int n;
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/*
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* discard the byte(s) that signaled us
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* We really don't care about the number of bytes, but coverity
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* thinks we should.
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*/
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n = read(wsi->desc.sockfd, s, sizeof(s));
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(void)n;
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if (n < 0)
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return LWS_HPI_RET_PLEASE_CLOSE_ME;
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#endif
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#if defined(LWS_WITH_THREADPOOL)
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/*
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* threadpools that need to call for on_writable callbacks do it by
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* marking the task as needing one for its wsi, then cancelling service.
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*
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* Each tsi will call this to perform the actual callback_on_writable
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* from the correct service thread context
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*/
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lws_threadpool_tsi_context(pt->context, pt->tid);
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#endif
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/*
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* the poll() wait, or the event loop for libuv etc is a
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* process-wide resource that we interrupted. So let every
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* protocol that may be interested in the pipe event know that
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* it happened.
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*/
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if (lws_broadcast(pt, LWS_CALLBACK_EVENT_WAIT_CANCELLED, NULL, 0)) {
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lwsl_info("closed in event cancel\n");
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return LWS_HPI_RET_PLEASE_CLOSE_ME;
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}
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return LWS_HPI_RET_HANDLED;
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}
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struct lws_role_ops role_ops_pipe = {
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/* role name */ "pipe",
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/* alpn id */ NULL,
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/* check_upgrades */ NULL,
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/* pt_init_destroy */ NULL,
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/* init_vhost */ NULL,
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/* destroy_vhost */ NULL,
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/* service_flag_pending */ NULL,
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/* handle_POLLIN */ rops_handle_POLLIN_pipe,
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/* handle_POLLOUT */ NULL,
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/* perform_user_POLLOUT */ NULL,
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/* callback_on_writable */ NULL,
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/* tx_credit */ NULL,
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/* write_role_protocol */ NULL,
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/* encapsulation_parent */ NULL,
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/* alpn_negotiated */ NULL,
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/* close_via_role_protocol */ NULL,
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/* close_role */ NULL,
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/* close_kill_connection */ NULL,
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/* destroy_role */ NULL,
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/* adoption_bind */ NULL,
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/* client_bind */ NULL,
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/* issue_keepalive */ NULL,
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/* adoption_cb clnt, srv */ { 0, 0 },
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/* rx_cb clnt, srv */ { 0, 0 },
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/* writeable cb clnt, srv */ { 0, 0 },
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/* close cb clnt, srv */ { 0, 0 },
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/* protocol_bind_cb c,s */ { 0, 0 },
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/* protocol_unbind_cb c,s */ { 0, 0 },
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/* file_handle */ 1,
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};
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