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