checkfriends — Mode that clients can use to poll the server to see if their Friends list has been updated. This request is extremely quick, and is the preferred way for users to see when their Friends list is updated, rather than pounding on reload in their browser, which is stressful on the servers.
Mode that clients can use to poll the server to see if their Friends list has been updated. This request is extremely quick, and is the preferred way for users to see when their Friends list is updated, rather than pounding on reload in their browser, which is stressful on the servers.
The protocol request mode:
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
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 27, Protocol Versions for details on the protocol version.
The time that this mode request returned last time you called it. If this is the first time you've ever called it (since your client has been running), leave this blank. It's strongly recommended that you do not remember this value across invocations of your client, as it's very likely your friends will update since the client was running so the notification is pointless... the user probably read his/her Friends page already before starting the client.
(Optional) The friend group(s) in which the client is checking for new entries, represented as a 32-bit unsigned int. Turn on any combination of bits 1-30 to check for entries by friends in the respective friend groups. Turn on bit 0, or leave the mask off entirely, to check for entries by any friends.
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
FAIL, not present if
OK. If the success variable is not present, this variable most likely will not be either (in the case of a server error), and clients should just report "Server Error, try again later.".
The time of the most recent post that one of the user's friends has made. Don't try to infer anything from this time. It's currently of the form "yyyy-mm-dd hh:mm:ss", in PST. However, in the future, it may not even be a date... just blindly store and return this value back later, ignoring its format.
This is what you should use to determine if there are new entries. Its value is "1" if there is new stuff, or "0" if there isn't. A few people requested that this return the number of new entries, but that's a lot more resource intensive, and this protocol mode is supposed to be very quick and painless. In the future we may add a "new_count" response value that says how many new items there are. Note that once this values becomes "1" and you alert the user, stop polling! It'd be pointless to have the client hitting the server all night while the user slept. Once the user acknowledges the notification (double-clicks the system tray or panel applet or whatnot), then resume your polling.
How many seconds you must wait before polling the server again. If your client disobeys, this protocol will just return error messages saying "slow down, bad client!" instead of giving you the data you were trying to cheat to obtain. Note that this also means your client should have an option to disable polling for updates, since some users run multiple operating systems with multiple LiveJournal clients, and both would be fighting each other.