core-legacy/helpers/bind_tcp_server.cc

#include <netdb.h>
#include <trantor/utils/Logger.h>
#include <helpers.h>

#include "config.h"

int
helpers::bind_tcp_server(const char *addr, const char *port, int max_client_backlog)
{
    struct addrinfo hints{}, *res;
    int fd;
    int status;

    memset(&hints, 0, sizeof hints);
    hints.ai_family = AF_UNSPEC;
    hints.ai_socktype = SOCK_STREAM;
    hints.ai_flags = AI_PASSIVE;

    if ((status = getaddrinfo(addr, port, &hints, &res)) != 0)
    {
        LOG_ERROR << "Error getting address info: " << gai_strerror(status);
    }

    fd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);

    if ((status = bind(fd, res->ai_addr, res->ai_addrlen)) == -1)
    {
        LOG_ERROR << "Error binding socket. " << status;
        freeaddrinfo(res);
        return -1;
    }

    if ((status = listen(fd, max_client_backlog)) == -1)
    {
        LOG_ERROR << "Error setting up listener. " << status;
        freeaddrinfo(res);
        return -1;
    }

    freeaddrinfo(res);

    return fd;
}