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From: Gary Graham <gegcorp2012 AT gmail DOT com>
Date: Tue, 1 Jan 2019 01:18:42 -0600
Message-ID: <CA+CBp6d-O-051ufgt67apS0Qy6Sq87K5+C0OrY3VBXT9o8yf5g@mail.gmail.com>
Subject: Re: Virtual device in Windows 10
To: cygwin AT cygwin DOT com
Content-Type: text/plain; charset="UTF-8"

I downloaded an updated version of the Cygwin tools and tried again....

C:\cygwin64\bin>socat -d -d pty,link=/dev/ttyV0,waitslave tcp:
192.168.0.11:8023
2019/01/01 01:14:27 socat[10780] N PTY is /dev/pty0
2019/01/01 01:14:27 socat[10780] N opening connection to AF=2
192.168.0.11:8023
2019/01/01 01:14:28 socat[10780] N successfully connected from local
address AF=2 192.168.0.18:55426
2019/01/01 01:14:28 socat[10780] N starting data transfer loop with FDs
[5,5] and [6,6]
2019/01/01 01:14:28 socat[10780] N read(5, 0x600056500, 8192): Input/output
error (probably PTY closed)
2019/01/01 01:14:28 socat[10780] N socket 1 (fd 5) is at EOF
2019/01/01 01:14:28 socat[10780] N socket 1 (fd 5) is at EOF
2019/01/01 01:14:28 socat[10780] N socket 2 (fd 6) is at EOF
2019/01/01 01:14:28 socat[10780] N exiting with status 0

Can you tell why the PTY is closing ?

Regards,
Gary G.

On Tue, Jan 1, 2019 at 12:37 AM Gary Graham <gegcorp2012 AT gmail DOT com> wrote:

> Greetings,
>
> Trying to use socat to bridge from the network to a virtual serial port on
> Windows.
> The detailed output shows a connection is opening, but it does not stay
> open.
>
>
>
> socat -d -d pty,link=virtualcom0,waitslave tcp:192.168.0.11:8023
>       2 [main] socat 15388 find_fast_cwd: WARNING: Couldn't compute
> FAST_CWD pointer.  Please report this problem to
> the public mailing list cygwin AT cygwin DOT com
> 2019/01/01 00:29:15 socat[15388] N PTY is /dev/pty0
> 2019/01/01 00:29:15 socat[15388] N opening connection to AF=2
> 192.168.0.11:8023
> 2019/01/01 00:29:15 socat[15388] N successfully connected from local
> address AF=2 192.168.0.18:51704
> 2019/01/01 00:29:15 socat[15388] N starting data transfer loop with FDs
> [3,3] and [4,4]
> 2019/01/01 00:29:15 socat[15388] N socket 1 (fd 3) is at EOF
> 2019/01/01 00:29:15 socat[15388] N exiting with status 0
>
>

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