The TMX doesn't support any another compression method, except "null".
Compression Method: null (0)
If  the client requests without the "null" method, the TMX will reject the
request.
Compression Methods (2 methods)
Compression Method: DEFLATE (1)

However, in current standard, the "null" is the MUST compression
method.

To support the compress method, you can use the HTTP compress. Our TMX support
compress the HTTP objects.

Now, we have no plan to support the compress method.