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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.
*
*/
#include "src/core/ext/transport/chttp2/alpn/alpn.h"
#include <grpc/support/log.h>
#include <grpc/support/useful.h>
/* in order of preference */
static const char *const supported_versions[] = {"grpc-exp", "h2"};
int grpc_chttp2_is_alpn_version_supported(const char *version, size_t size) {
size_t i;
for (i = 0; i < GPR_ARRAY_SIZE(supported_versions); i++) {
if (!strncmp(version, supported_versions[i], size)) return 1;
}
return 0;
}
size_t grpc_chttp2_num_alpn_versions(void) {
return GPR_ARRAY_SIZE(supported_versions);
}
const char *grpc_chttp2_get_alpn_version_index(size_t i) {
GPR_ASSERT(i < GPR_ARRAY_SIZE(supported_versions));
return supported_versions[i];
}
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