40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <netdb.h>
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#include <sys/socket.h>
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#include <logger.h>
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#include <helpers.h>
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int
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helper_connect_tcp_server(char* host, uint16_t port)
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{
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char port_str[6];
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sprintf(port_str, "%d", port);
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int s, status;
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struct addrinfo hints, *res;
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memset(&hints, 0, sizeof hints);
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hints.ai_family = AF_INET; //set IP Protocol flag (IPv4 or IPv6 - we don't care)
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hints.ai_socktype = SOCK_STREAM; //set socket flag
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if ((status = getaddrinfo(host, port_str, &hints, &res)) != 0) { //getaddrinfo() will evaluate the given address, using the hints-flags and port, and return an IP address and other server infos
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LOG_ERROR("getaddrinfo: %s\n", gai_strerror(status));
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return -1;
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}
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//res got filled out by getaddrinfo() for us
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s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); //creating Socket
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if ((status = connect(s, res->ai_addr, res->ai_addrlen)) != 0) {
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LOG_ERROR("connect() failed\n");
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freeaddrinfo(res);
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return -1;
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}
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freeaddrinfo(res);
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return s;
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}
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