Communications

These are functions and events that allow scripts to communicate with users, other scripts, and with scripts and programs running on computers outside SL. Depending on what you're trying to do, you may have some leeway when choosing which methods to use. When faced with a choice, these benchmarks can demonstrate the performance differences of one method over another.

Chat llDialog llListen llListenControl llListenRemove llOwnerSay llSay llShout llWhisper Event: listen Cryptography llBase64ToString llMD5String llStringToBase64 llXorBase64StringsCorrect llXorBase64Strings llModPow Email llEmail llGetNextEmail Event: email

Instant Messaging llInstantMessage Link Messages llMessageLinked Event: link_message Text llSetSitText llSetText llSetTouchText XML-RPC llCloseRemoteDataChannel llOpenRemoteDataChannel llRemoteDataReply llRemoteDataSetRegion llSendRemoteData Event: remote_data HTTP llHTTPRequest llEscapeURL llUnescapeURL Event: http_response

Method	Script Delay	Object owner	Other users	Other objects	Scripts in the same object	Send to computers outside SL	Receive from outside SL	Comment
Chat: Whisper, Say, Shout	No	Yes	Yes	Yes	No	No	No	Must be within chat distance to be able to receive.
llOwnerSay	No	Yes	No	No	No	No	No	Owner must be in the same sim.
llDialog Create	Yes	Yes	Yes	No	No	No	No	Only the directed user can receive and they must be in the sim.
llDialog Response	No	Yes	Yes	Yes	No	No	No	Receiver must be within chat distance of where the dialog box was created.
Instant Messages	Yes	Yes	Yes	No	No	No	No
Link Messages	No	No	No	No	Yes	No	No	Only scripts contained within a given linked object may receive.
Email	Yes	No	No	Yes	Yes	Yes	Yes	link messages are better for intra-object communication.
XML-RPC	No	No	No	No	No	No	Yes	Only connections from an external computer to SL can be initiated.
HTTP	No	No	No	No	No	Yes	No	Only connections from SL to a non-Linden Lab server can be initiated.

There are also several alternatives to these methods of communication, but they have a limited number of uses.

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Functions | Events | Chat | Email | XML-RPC