int connect()

in net/basic_socket.cpp [86:113]

• 27 lines of code
• 10 McCabe index (conditional complexity)

int connect(int fd, const struct sockaddr *addr, socklen_t addrlen,
            Timeout timeout) {
    int err = 0;
    while (true) {
        int ret = ::connect(fd, addr, addrlen);
        if (ret < 0) {
            auto e = errno;  // errno is usually a macro that expands to a
                             // function call
            if (e == EINTR) {
                err = 1;
                continue;
            }
            if (e == EINPROGRESS || (e == EADDRINUSE && err == 1)) {
                ret = photon::wait_for_fd_writable(fd, timeout);
                if (ret < 0) return -1;
                socklen_t n = sizeof(err);
                ret = getsockopt(fd, SOL_SOCKET, SO_ERROR, &err, &n);
                if (unlikely(ret < 0)) return -1;
                if (err) {
                    errno = err;
                    return -1;
                }
                return 0;
            }
        }
        return ret;
    }
}