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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef GRPC_CORE_LIB_IOMGR_UDP_SERVER_H
#define GRPC_CORE_LIB_IOMGR_UDP_SERVER_H
#include "src/core/lib/iomgr/endpoint.h"
#include "src/core/lib/iomgr/ev_posix.h"
#include "src/core/lib/iomgr/resolve_address.h"
/* Forward decl of struct grpc_server */
/* This is not typedef'ed to avoid a typedef-redefinition error */
struct grpc_server;
/* Forward decl of grpc_udp_server */
typedef struct grpc_udp_server grpc_udp_server;
/* Called when data is available to read from the socket. */
typedef void (*grpc_udp_server_read_cb)(grpc_exec_ctx *exec_ctx, grpc_fd *emfd,
void *user_data);
/* Called when the socket is writeable. */
typedef void (*grpc_udp_server_write_cb)(grpc_exec_ctx *exec_ctx, grpc_fd *emfd,
void *user_data);
/* Called when the grpc_fd is about to be orphaned (and the FD closed). */
typedef void (*grpc_udp_server_orphan_cb)(grpc_exec_ctx *exec_ctx,
grpc_fd *emfd, void *user_data);
/* Create a server, initially not bound to any ports */
grpc_udp_server *grpc_udp_server_create(const grpc_channel_args *args);
/* Start listening to bound ports. user_data is passed to callbacks. */
void grpc_udp_server_start(grpc_exec_ctx *exec_ctx, grpc_udp_server *udp_server,
grpc_pollset **pollsets, size_t pollset_count,
void *user_data);
int grpc_udp_server_get_fd(grpc_udp_server *s, unsigned port_index);
/* Add a port to the server, returning port number on success, or negative
on failure.
The :: and 0.0.0.0 wildcard addresses are treated identically, accepting
both IPv4 and IPv6 connections, but :: is the preferred style. This usually
creates one socket, but possibly two on systems which support IPv6,
but not dualstack sockets. */
/* TODO(ctiller): deprecate this, and make grpc_udp_server_add_ports to handle
all of the multiple socket port matching logic in one place */
int grpc_udp_server_add_port(grpc_udp_server *s,
const grpc_resolved_address *addr,
grpc_udp_server_read_cb read_cb,
grpc_udp_server_write_cb write_cb,
grpc_udp_server_orphan_cb orphan_cb);
void grpc_udp_server_destroy(grpc_exec_ctx *exec_ctx, grpc_udp_server *server,
grpc_closure *on_done);
#endif /* GRPC_CORE_LIB_IOMGR_UDP_SERVER_H */
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