+ $winch_received = 0;
+ };
+
+ while (1) {
+ while(my ($readable) = IO::Select->select($select, undef, undef, 3)) {
+ $check_terminal_size->() if $winch_received;
+
+ foreach my $fh (@$readable) {
+
+ if ($fh == $web_socket) {
+ # Read from WebSocket
+
+ my $nr = $wb_socket_read_available_bytes->();
+ if (!defined($nr)) {
+ die "web socket read error $!\n";
+ } elsif ($nr == 0) {
+ return; # EOF
+ } else {
+ my ($payload, $req_close) = $parse_web_socket_frame->(\$wsbuf);
+ if ($payload) {
+ $full_write->(\*STDOUT, $payload);
+ }
+ return if $req_close;
+ }
+
+ } elsif ($fh == $input_fh) {
+ # Read from STDIN
+
+ my $nr = read(\*STDIN, my $buff, 4096);
+ return if !$nr; # EOF or error
+
+ my $char = ord($buff);
+
+ # check for CTRL-a-q
+ return if $ctrl_a_pressed_before == 1 && $char == hex("0x71");
+
+ $ctrl_a_pressed_before = ($char == hex("0x01") && $ctrl_a_pressed_before == 0) ? 1 : 0;
+
+ my $frame = $create_websockt_frame->("0:" . $nr . ":" . $buff);
+ $full_write->($web_socket, $frame);
+ }
+ }
+ }
+ $check_terminal_size->() if $winch_received;
+
+ # got timeout
+ $full_write->($web_socket, $create_websockt_frame->("2")); # ping server to keep connection alive