8c24d921b0
sample: examples\aliyun_iotkit_csdk_mqtt project: board\TencentOS_tiny_EVB_MX_Plus\KEIL\aliyun_iotkit_csdk_mqtt
39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
/*
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* Copyright (C) 2015-2018 Alibaba Group Holding Limited
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*/
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#include "nghttp2_npn.h"
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#include <string.h>
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static int select_next_protocol(unsigned char **out, unsigned char *outlen,
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const unsigned char *in, unsigned int inlen,
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const char *key, unsigned int keylen) {
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unsigned int i;
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for (i = 0; i + keylen <= inlen; i += (unsigned int)(in[i] + 1)) {
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if (memcmp(&in[i], key, keylen) == 0) {
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*out = (unsigned char *)&in[i + 1];
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*outlen = in[i];
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return 0;
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}
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}
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return -1;
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}
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#define NGHTTP2_HTTP_1_1_ALPN "\x8http/1.1"
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#define NGHTTP2_HTTP_1_1_ALPN_LEN (sizeof(NGHTTP2_HTTP_1_1_ALPN) - 1)
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int nghttp2_select_next_protocol(unsigned char **out, unsigned char *outlen,
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const unsigned char *in, unsigned int inlen) {
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if (select_next_protocol(out, outlen, in, inlen, NGHTTP2_PROTO_ALPN,
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NGHTTP2_PROTO_ALPN_LEN) == 0) {
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return 1;
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}
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if (select_next_protocol(out, outlen, in, inlen, NGHTTP2_HTTP_1_1_ALPN,
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NGHTTP2_HTTP_1_1_ALPN_LEN) == 0) {
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return 0;
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}
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return -1;
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}
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