Page Navigation:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
Printable Version: RFC929.PDF
RFC 929 December 1984
Proposed Host-Front End Protocol
304 Passive service not available
305 Invalid Foreign Address Primary Component
306 Invalid Transmit Discipline
307 Invalid Foreign Address Secondary Component
308 Invalid Local Address Secondary Component
309 Invalid Timeout Interval
310 Invalid Type of Service Advice
311 Invalid Flow control Advice
312 Invalid Local Address Primary Component
401 Protocol Interpreter in OPE not responding
402 Remote Protocol Interpreter not available
403 Failed; insufficient protocol interpreter resources
501 Failed; insufficient OPE resources
601 Request violates security policy
602 Security parameter problem
Additionally, protocol idiosyncratic responses will be defined
for each off-loaded protocol.
Example of Begin Command
The Begin command is the most complex of the H-FP Command
Level. When the off-loaded protocol is TCP, the Begin command
is used to open TCP connections. One possible example of a
Begin command issued by an inboard Telnet interpreter to open a
TCP connection to ISIA, with no begin timeout interval, is:
C BE TCP A ISIA 9 N 23 ,, ,, N0 S
Where:
TCP The code for the protocol TCP
A Indicates Active Begin
ISIA The name of a Host at USC-ISI
9 Mediation Level 9: Full OPE mediation
N Non-blocking transmit
23 Destination Telnet Port
,, skip over parameters (Local Address Secondary,
Begin Timeout Interval)
N0 Type of Service Advice: No special Advice,
Normal Precedence
S Flow Control Advice: use small blocks
This command will cause the OPE to invoke the TCP interpreter
to generate the initial SYN packet to the well-known Telnet
socket on Host ISIA. It also informs the OPE to do all TCP
related processing via the Mediation Level, accepts default
Lilienkamp & Mandell & Padlipsky [Page 20]