choose port to listen

[fangxian]

We can listen to the port 01023 if we have the root access to run the program, however 11023 ports are "privileged" ports. It may not safe if we listen these ports.
So in the code
if (info.port < 0) {
fprintf(stderr, "ttyd: invalid port: %s\n", optarg);
return -1;
}
Do we need to change the condition if( info.port < 0) to if(info.port < 1024)?

[tsl0922]

I don't think listening on a "privileged" port is not safe, if you don't want to use root user to run the command, you can use the --uid and --gid option to run ttyd as other user and group.