5.3. Backward compatibility with v0 control protocol.
- For backward compatibility with the "version 0" control protocol, Tor checks
- whether the third octet the first command is zero. If it is, Tor
- assumes that version 0 is in use. This feature is deprecated, and will be
- removed in the 0.1.3.x Tor development series.
-
- In order to detect which version of the protocol is supported controllers
- should send the sequence [00 00 0D 0A]. This is a valid and unrecognized
- command in both protocol versions, and implementations can detect which
- error they have received.
+ For backward compatibility with the "version 0" control protocol,
+ Tor used to check whether the third octet of the first command is zero.
+ (If it was, Tor assumed that version 0 is in use.)
+
+ This compatibility was removed in Tor 0.1.2.16 and 0.2.0.4-alpha.
5.4. Options for use by controllers