The protocol request mode: getfriendgroups

Username. Leading and trailing whitespace is ignored, as is case.

The authentication method used for this request. Default is 'clear', for plain-text authentication. 'cookie' or any of the challenge / response methods are also acceptable.

DEPRECATED. Password in plain-text. For the default authentication method, either this needs to be sent, or hpassword.

DEPRECATED. Alternative to plain-text password. Password as an MD5 hex digest. Not perfectly secure, but defeats the most simple of network sniffers.

If using challenge / response authentication, this should be the challenge that was generated for your client.

If using challenge / response authentication, this should be the response hash you generate based on the challenge's formula.

(Optional) Protocol version supported by the client; assumed to be 0 if not specified. See Chapter 11: Protocol Versions for details on the protocol version.

OK on success or FAIL when there's an error. When there's an error, see errmsg for the error text. The absence of this variable should also be considered an error.

The error message if success was FAIL, not present if OK. If the success variable isn't present, this variable most likely won't be either (in the case of a server error), and clients should just report "Server Error, try again later.".

The name of the friend group with number num.

The sort-order of the friend group with number num. An integer value between 0 and 255.

If this key is returned and its value is "1", then group num is a public group. (that is, other users can see the name of the group and who is in it)

The largest friend group number that was returned. This is not the number of friend groups returned, it is simply the upper bound. In other words, there may be holes as you iterate from 1 to frgrp_maxnum, so don't assume the presence of any key/value pairs returned. If this value is 0, however, you can safely assume there are no friend groups, as the minimum allowed friend group number is 1.