The LayGO PXS Synchronous Tunnel server, synctunnel, lets remote clients read and write data directly to the PXS synchronous communication ports via TCP/IP. Clients interact with synctunnel using a simple API implementing a framing protocol to map between the stream based semantics of TCP/IP and the frame-based semantics of synchronous communications.
The synctunnel server listens for client connections
on TCP port 49171 for line 0 and on on port 49172 for line 1. These port
numbers can be changed by setting the SYNCTUNNELPORT
environment variable on the PXS to the desired port for line 0. (Line 1 uses always
[port for line 0] + 1.) Use the RedBoot
environment
command to make this change. For instance, to configure
synctunnel to listen on TCP
ports 49999 and 50000:
Advanced Relay Corporation LayGO PXS - Protocol eXchange Server LayGO PXS Boot Version 3.20 RedBoot(tm) Debug Environment - Built 17:33:51, Sep 13 2004 Portions Copyright (c) 2000, Red Hat, Inc. Portions Copyright (c) 2001, Comtrol Corp. Portions Copyright (c) 2003, Advanced Relay Corp. RedBoot> env Application environment: <none> RedBoot> env SYNCTUNNELPORT=49999 Application environment: SYNCTUNNELPORT=49999