b2f:bcf_v1
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−Table of Contents
Binary Compressed Forward Version 1
This version of the protocol is an extension to both the ASCII Basic Protocol and the Binary Compressed Forward Version 0. It is used to transfer compressed ASCII Messages or binary files.
This version is advertised in the SID Features field with the B1
and F
strings (F4HOF's note: some implementations actively check against the presence of B1F
, so it's strongly recommended to concatenate those flags).
The main differences with version 0 are:
- An enlarged set of selective retrieval replies.
- The first transmitted block is slightly changed
Commands
Selective message retrieval
Value | Alt Value | Action | Meaning |
---|---|---|---|
Y | + | Accept | Send the message and delete it from the queue (“Yes”) |
N | - | Drop | Don't send the message and delete it from the queue (“No”) |
L | = | Defer | Keep in the queue to retrieve it later |
H | Hold | Send the message and hold it in the queue | |
R | Reject | Message is rejected | |
E | Error | Invalid proposal | |
A | ! | Append | Send the message, starting from offset then delete it from the queue |
b2f/bcf_v1.1739539753.txt.gz · Last modified: 2025/02/14 13:29 by f4hof