User guide

50 DC 900-1303C
Freeway Client-Server Interface Control Document
3.2.2 Open Session Response Packet
The Open Session response consists of a TSI header and a Freeway header, followed by
the data area containing an ASCII character string specifying the Freeway software ver-
sion. If an error has occurred, the server returns an error code in the status field. The
Freeway Session ID is returned if the request was accepted and must be included in sub-
sequent packets sent to the server for this session.
a
sequence number assigned by client
a
id assigned by client
b
id assigned by server
TSI Header
Header Length = 20
Data Length = 44+data
Sequence Number = n
a
Packet Type = 2
Command = n/a
First Segment = n/a
Last Segment = n/a
Freeway Header
Reserved
Shared Header Size = 12
Private Header Size = 20
Type = 1
Command = 1
Status = return status code
Client Session ID = n
a
Freeway Session ID = m
b
Reserved
Private
Data
Software Version (1-20 chars)