78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
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#include <stdio.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 <sys/types.h>
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#include <string.h>
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#include <unistd.h>
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#include "oct_networking.h"
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struct {
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int needs_recv;
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int needs_send;
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char recv_buffer[BUFFER_SIZE];
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char send_buffer[BUFFER_SIZE];
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int sock_fd;
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} oct_network_client;
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struct {
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int needs_recv;
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int needs_send;
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char recv_buffer[BUFFER_SIZE];
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char send_buffer[BUFFER_SIZE];
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int sfd;
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} oct_network_server;
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int oct_network_server_init(char* port) {
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oct_network_server.needs_recv = 0;
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oct_network_server.needs_send = 0;
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struct addrinfo hints;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = AF_UNSPEC; // ipv4 or ipv6
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hints.ai_socktype = SOCK_DGRAM; // datagram
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hints.ai_flags = AI_PASSIVE; // any IP address
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hints.ai_protocol = 0; // any protocol
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hints.ai_canonname = NULL;
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hints.ai_addr = NULL;
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hints.ai_next = NULL;
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struct addrinfo* result;
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int s = getaddrinfo(NULL, port, &hints, &result);
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if (s != 0) {
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//fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(s));
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return 0;
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}
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/* getaddrinfo() returns a list of address structures.
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Try each address until we successfully bind(2).
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If socket(2) (or bind(2)) fails, we (close the socket
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and) try the next address. */
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struct addrinfo *rp;
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for (rp = result; rp != NULL; rp = rp->ai_next) {
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oct_network_server.sfd = socket(rp->ai_family, rp->ai_socktype,
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rp->ai_protocol);
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if (oct_network_server.sfd == -1)
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continue;
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if (bind(oct_network_server.sfd, rp->ai_addr, rp->ai_addrlen) == 0)
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break; /* Success */
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close(oct_network_server.sfd);
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}
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freeaddrinfo(result);
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if (!rp) {
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return 0;
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}
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return 1;
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}
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