Difference between revisions of "LlHTTPResponse"

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(added note about sending more than 2k characters to an SL object being lost (grrr))
m (<lsl> tag to <source>)
 
(18 intermediate revisions by 7 users not shown)
Line 1: Line 1:
{{LSL_Function
{{LSL_Function
|inject-2={{Issues/SCR-396}}
|func_id=348|func_sleep=0.0|func_energy=10.0|mode
|func_id=348|func_sleep=0.0|func_energy=10.0|mode
|func=llHTTPResponse
|func=llHTTPResponse
|p1_type=key|p1_name=request_id|p1_desc=A valid HTTP request key.
|p1_type=key|p1_subtype=handle|p1_name=request_id|p1_desc=A valid HTTP request key.
|p2_type=integer|p2_name=status|p2_desc=HTTP Status (200, 400, 404, etc)
|p2_type=integer|p2_name=status|p2_desc={{Wikipedia|List_of_HTTP_status_codes|HTTP Status}} (200, 400, 404, etc)|p2_hover=HTTP Status (200, 400, 404, etc)
|p3_type=string|p3_name=body|p3_desc=Contents of the response.
|p3_type=string|p3_name=body|p3_desc=Contents of the response.
|func_footnote=The response need not be made inside the [[http_request]] event but if it does not happen in a timely fashion the request will time out (within 25 seconds).
|func_footnote=The response need not be made inside the [[http_request]] event but if it does not happen in a timely fashion the request will time out (within 25 seconds).
|func_desc=Responds to '''request_id''' with '''status''' and '''body'''.
|func_desc=Responds to {{LSLP|request_id}} with {{LSLP|status}} and {{LSLP|body}}.
|return_text
|return_text
|spec
|spec
|caveats=*This call must be made by the script containing the [[http_request]] event where the '''request_id''' was received.
|caveats=* This call must be made by the script containing the [[http_request]] event where the {{LSLP|request_id}} was received.
*Remember that [[http_request]] is limited to 2K character body size incoming, so if responding to an SL object, anything over 2K characters sent with this function will be lost at the receiver.
* There is no limit, other than script size, to the amount of data that can be sent by this function.
** [[llHTTPRequest]] can truncate the response length in ''receiving'' scripts. Be aware when using them together for prim-to-prim communications.
* The response by default has <code>{{String|content-type: text/plain}}</code>. Use [[llSetContentType]] to optionally return a different type, like <code>{{String|text/html}}</code>.
|constants
|constants
|examples=
|examples=
<source lang="lsl2">
string url;
default
{
    changed(integer change)
    {
        if (change & (CHANGED_REGION_START | CHANGED_REGION | CHANGED_TELEPORT))
            llResetScript();
    }
    state_entry()
    {
        llRequestURL();
    }
    touch_start(integer num_detected)
    {
    //  PUBLIC_CHANNEL has the integer value 0
        if (url != "")
            llSay(PUBLIC_CHANNEL, "URL: " + url);
    }
    http_request(key id, string method, string body)
    {
    //  http://en.wikipedia.org/wiki/Create,_read,_update_and_delete
        list CRUDmethods = ["GET", "POST", "PUT", "DELETE"];
    //  it's bit-wise NOT ( ~ ) !!!
        integer isAllowedMethod = ~llListFindList(CRUDmethods, [method]);
        if (isAllowedMethod)
        {
            llHTTPResponse(id, 200, "Body of request below:\n" + body);
        }
        else if (method == URL_REQUEST_GRANTED)
        {
        //  don't forget the trailing slash
            url = body + "/";
            llOwnerSay("URL: " + url);
        }
        else if (method == URL_REQUEST_DENIED)
        {
            llOwnerSay("Something went wrong, no URL.\n" + body);
        }
        else
        {
            llOwnerSay("Ummm... I have no idea what SL just did. Method=\""+method+"\"\n" + body);
        }
    }
}
</source>
|helpers
|helpers
|also_constants=
{{LSL DefineRow|1=|2={{LSL Const|CONTENT_TYPE_TEXT}}|3={{#var:comment}}}}
{{LSL DefineRow|1=|2={{LSL Const|CONTENT_TYPE_HTML}}|3={{#var:comment}}}}
{{LSL DefineRow|1=|2={{LSL Const|CONTENT_TYPE_XML}}|3={{#var:comment}}}}
{{LSL DefineRow|1=|2={{LSL Const|CONTENT_TYPE_XHTML}}|3={{#var:comment}}}}
{{LSL DefineRow|1=|2={{LSL Const|CONTENT_TYPE_ATOM}}|3={{#var:comment}}}}
{{LSL DefineRow|1=|2={{LSL Const|CONTENT_TYPE_JSON}}|3={{#var:comment}}}}
{{LSL DefineRow|1=|2={{LSL Const|CONTENT_TYPE_LLSD}}|3={{#var:comment}}}}
{{LSL DefineRow|1=|2={{LSL Const|CONTENT_TYPE_FORM}}|3={{#var:comment}}}}
{{LSL DefineRow|1=|2={{LSL Const|CONTENT_TYPE_RSS}}|3={{#var:comment}}}}
|also_functions=
|also_functions=
{{LSL DefineRow||[[llGetFreeURLs]]}}
{{LSL DefineRow||[[llGetFreeURLs]]}}
Line 20: Line 85:
{{LSL DefineRow||[[llReleaseURL]]}}
{{LSL DefineRow||[[llReleaseURL]]}}
{{LSL DefineRow||[[llGetHTTPHeader]]}}
{{LSL DefineRow||[[llGetHTTPHeader]]}}
{{LSL DefineRow||[[llSetContentType]]}}
|also_tests
|also_tests
|also_events=
|also_events=
{{LSL DefineRow||[[http_request]]}}
{{LSL DefineRow||[[http_request]]}}
{{LSL DefineRow||[[http_response]]}}
|also_articles=
|also_articles=
{{LSL DefineRow||[[LSL http server]]}}
{{LSL DefineRow||[[LSL http server]]}}

Latest revision as of 10:30, 22 January 2015

Summary

Function: llHTTPResponse( key request_id, integer status, string body );
0.0 Forced Delay
10.0 Energy

Responds to request_id with status and body.

• key request_id – A valid HTTP request key.
• integer status – "Wikipedia logo" HTTP Status (200, 400, 404, etc)
• string body – Contents of the response.

The response need not be made inside the http_request event but if it does not happen in a timely fashion the request will time out (within 25 seconds).

Caveats

  • This call must be made by the script containing the http_request event where the request_id was received.
  • There is no limit, other than script size, to the amount of data that can be sent by this function.
    • llHTTPRequest can truncate the response length in receiving scripts. Be aware when using them together for prim-to-prim communications.
  • The response by default has "content-type: text/plain". Use llSetContentType to optionally return a different type, like "text/html".

Examples

string url;

default
{
    changed(integer change)
    {
        if (change & (CHANGED_REGION_START | CHANGED_REGION | CHANGED_TELEPORT))
            llResetScript();
    }

    state_entry()
    {
        llRequestURL();
    }

    touch_start(integer num_detected)
    {
    //  PUBLIC_CHANNEL has the integer value 0
        if (url != "")
            llSay(PUBLIC_CHANNEL, "URL: " + url);
    }

    http_request(key id, string method, string body)
    {
    //  http://en.wikipedia.org/wiki/Create,_read,_update_and_delete
        list CRUDmethods = ["GET", "POST", "PUT", "DELETE"];
    //  it's bit-wise NOT ( ~ ) !!!
        integer isAllowedMethod = ~llListFindList(CRUDmethods, [method]);

        if (isAllowedMethod)
        {
            llHTTPResponse(id, 200, "Body of request below:\n" + body);
        }
        else if (method == URL_REQUEST_GRANTED)
        {
        //  don't forget the trailing slash
            url = body + "/";

            llOwnerSay("URL: " + url);
        }
        else if (method == URL_REQUEST_DENIED)
        {
            llOwnerSay("Something went wrong, no URL.\n" + body);
        }
        else
        {
            llOwnerSay("Ummm... I have no idea what SL just did. Method=\""+method+"\"\n" + body);
        }
    }
}

Deep Notes

History

Signature

function void llHTTPResponse( key request_id, integer status, string body );
Retrieved from "https://wiki.secondlife.com/w/index.php?title=LlHTTPResponse&oldid=1194297"