3.1 Server responses
OK [<arbitrary debugging information>]
- Request was successful.
[<human readable error description>]
- Request could not be fulfilled. The error codes are mostly application
specific except for a few common ones.
<status information depending on keyword>
- Informational output by the server, still processing the request.
- Comment line issued only for debugging purposes. Totally ignored.
D <raw data>
- Raw data returned to client. There must be exactly one space after the
'D'. The values for '%', CR and LF must be percent escaped; this is
encoded as %25, %0D and %0A. Only uppercase letters should be used in
the hexadecimal representation. Other characters may be percent escaped
for easier debugging. All these Data lines are considered one data
stream up to the OK or ERR response. Status and Inquiry Responses
may be mixed with the Data lines.
- Server needs further information from the client. The client should
answer with a command which is allowed after an inquiry. Note that the
server does not confirm that client command but either continues
processing or ends processing with an error status. Not all commands
A client should only check the first letter of each line and then skip
over to the next token (except for data lines where the raw data starts
exactly after 2 bytes). Lines larger than 1000 bytes should be
treated as a communication error. (The rationale for having a line
length limit is to allow for easier multiplexing of several channels).