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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_TEST_CORE_UTIL_PORT_H
#define GRPC_TEST_CORE_UTIL_PORT_H
#ifdef __cplusplus
extern "C" {
#endif
typedef struct grpc_pick_port_functions {
int (*pick_unused_port_fn)(void);
int (*pick_unused_port_or_die_fn)(void);
void (*recycle_unused_port_fn)(int port);
} grpc_pick_port_functions;
/* pick a port number that is currently unused by either tcp or udp. return
0 on failure. */
int grpc_pick_unused_port(void);
/* pick a port number that is currently unused by either tcp or udp. abort
on failure. */
int grpc_pick_unused_port_or_die(void);
/* Return a port which was previously returned by grpc_pick_unused_port().
* Implementations of grpc_pick_unused_port() backed by a portserver may limit
* the total number of ports available; this lets a binary return its allocated
* ports back to the server if it is going to allocate a large number. */
void grpc_recycle_unused_port(int port);
/** Request the family of pick_port functions in \a functions be used. */
void grpc_set_pick_port_functions(grpc_pick_port_functions functions);
#ifdef __cplusplus
}
#endif
#endif /* GRPC_TEST_CORE_UTIL_PORT_H */
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