95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
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#include "tcp_socket.h"
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// Standard library includes.
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#include <stdio.h>
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#include <string.h>
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// Unix includes.
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <errno.h>
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#include <unistd.h>
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// Local includes.
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#include "big_endian.h"
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int create_tcp_socket(unsigned short port) {
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struct sockaddr_in6 ipv6_addr;
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memset(&ipv6_addr, 0, sizeof(struct sockaddr_in6));
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ipv6_addr.sin6_family = AF_INET6;
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ipv6_addr.sin6_port = u16_be_swap(port);
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ipv6_addr.sin6_addr = in6addr_any;
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int tcp_socket = socket(AF_INET6, SOCK_STREAM | SOCK_NONBLOCK, 6);
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if (tcp_socket == -1) {
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switch (errno) {
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case EACCES:
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puts("ERROR: Socket creation: EACCES");
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break;
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case EAFNOSUPPORT:
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puts("ERROR: Socket creation: EAFNOSUPPORT");
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break;
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case EINVAL:
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puts("ERROR: Socket creation: EINVAL");
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break;
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case EMFILE:
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puts("ERROR: Socket creation: EMFILE");
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break;
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case ENOBUFS:
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puts("ERROR: Socket creation: ENOBUFS");
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break;
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case ENOMEM:
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puts("ERROR: Socket creation: ENOMEM");
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break;
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case EPROTONOSUPPORT:
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puts("ERROR: Socket creation: EPROTONOSUPPORT");
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break;
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default:
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puts("ERROR: Socket creation: Unknown Error");
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break;
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}
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return -1;
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}
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int ret = bind(tcp_socket, (const struct sockaddr *)&ipv6_addr, sizeof(struct sockaddr_in6));
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if (ret != 0) {
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close(tcp_socket);
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puts("ERROR: Failed to bind socket!");
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return -1;
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}
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ret = listen(tcp_socket, C_SIMPLE_HTTP_TCP_SOCKET_BACKLOG);
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if (ret == 0) {
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return tcp_socket;
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} else {
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switch (errno) {
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case EADDRINUSE:
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puts("ERROR: Socket listen: EADDRINUSE");
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break;
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case EBADF:
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puts("ERROR: Socket listen: EBADF");
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break;
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case ENOTSOCK:
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puts("ERROR: Socket listen: ENOTSOCK");
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break;
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default:
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puts("ERROR: Socket listen: Unknown Error");
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break;
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}
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return -1;
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}
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}
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void cleanup_tcp_socket(int *tcp_socket) {
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if (tcp_socket && *tcp_socket != -1) {
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close(*tcp_socket);
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*tcp_socket = -1;
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}
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}
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// vim: ts=2 sts=2 sw=2
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