kopia lustrzana https://github.com/espressif/esp-idf
optimization DNS get function
rodzic
d85d3d969f
commit
8b036a8405
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@ -32,20 +32,22 @@ typedef struct {
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int sock;
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int sock;
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} transport_tcp_t;
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} transport_tcp_t;
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static int resolve_dns(const char *host, struct sockaddr_in *ip) {
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static int resolve_dns(const char *host, struct sockaddr_in *ip)
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{
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const struct addrinfo hints = {
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.ai_family = AF_INET,
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.ai_socktype = SOCK_STREAM,
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};
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struct addrinfo *res;
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struct hostent *he;
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int err = getaddrinfo(host, NULL, &hints, &res);
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struct in_addr **addr_list;
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if(err != 0 || res == NULL) {
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he = gethostbyname(host);
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ESP_LOGE(TAG, "DNS lookup failed err=%d res=%p", err, res);
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if (he == NULL) {
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return ESP_FAIL;
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}
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addr_list = (struct in_addr **)he->h_addr_list;
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if (addr_list[0] == NULL) {
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return ESP_FAIL;
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return ESP_FAIL;
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}
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}
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ip->sin_family = AF_INET;
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ip->sin_family = AF_INET;
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memcpy(&ip->sin_addr, addr_list[0], sizeof(ip->sin_addr));
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memcpy(&ip->sin_addr, &((struct sockaddr_in *)(res->ai_addr))->sin_addr, sizeof(ip->sin_addr));
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freeaddrinfo(res);
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return ESP_OK;
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return ESP_OK;
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}
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}
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