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TiddlyWiki5/editions/tw5.com/tiddlers/messages/WidgetMessage_ tm-http-request.tid
Jeremy Ruston d1f90f075f
Add tm-http-request message for making HTTP requests (#7422)
* Initial Commit

* HttpClient object shouldn't need to know about events

* Add support for cancelling HTTP requests

* Make the number of outstanding HTTP requests available in a state tiddler

* Add a network activity button

Click it to cancel outstanding requests

* Fix typo

Thanks @btheado

Co-authored-by: btheado <brian.theado@gmail.com>

* Fix crash when cancelling more than one HTTP request

Thanks @saqimtiaz

* Further fixes to cancelling outstanding HTTP requests

* Fix missing body

---------

Co-authored-by: btheado <brian.theado@gmail.com>
2023-06-13 10:35:55 +01:00

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caption: tm-http-request
created: 20230429161453032
modified: 20230429161453032
tags: Messages
title: WidgetMessage: tm-http-request
type: text/vnd.tiddlywiki
The ''tm-http-request'' message is used to make an HTTP request to a server.
It uses the following properties on the `event` object:
|!Name |!Description |
|param |Not used |
|paramObject |Hashmap of parameters (see below) |
The following parameters are used:
|!Name |!Description |
|method |HTTP method (eg "GET", "POST") |
|body |String data to be sent with the request |
|query-* |Query string parameters with string values |
|header-* |Headers with string values |
|password-header-* |Headers with values taken from the password store |
|password-query-* |Query string parameters with values taken from the password store |
|var-* |Variables to be passed to the completion and progress handlers (without the "var-" prefix) |
|bind-status |Title of tiddler to which the status of the request ("pending", "complete", "error") should be bound |
|bind-progress |Title of tiddler to which the progress of the request (0 to 100) should be bound |
|oncompletion |Action strings to be executed when the request completes |
|onprogress |Action strings to be executed when progress is reported |
The following variables are passed to the completion handler:
|!Name |!Description |
|status |HTTP result status code (see [[MDN|https://developer.mozilla.org/en-US/docs/Web/HTTP/Status]]) |
|statusText |HTTP result status text |
|error |Error string |
|data |Returned data |
|headers |Response headers as a JSON object |
The following variables are passed to the progress handler:
|!Name |!Description |
|lengthComputable |Whether the progress loaded and total figures are valid - "yes" or "no" |
|loaded |Number of bytes loaded so far |
|total |Total number bytes to be loaded |
Note that the state tiddler $:/state/http-requests contains a number representing the number of outstanding HTTP requests in progress.
!! Examples
* [[Zotero's|https://www.zotero.org/]] API for retrieving reference items: [[WidgetMessage: tm-http-request Example - Zotero]]