<function name="Post" parent="http" type="libraryfunc"> <description> Sends an asynchronous **POST** request to a HTTP server. HTTP requests returning a status code >= `400` are still considered a success and will call the <page text="onSuccess">Structures/HTTPRequest</page> callback. The <page text="onFailure">Structures/HTTPRequest</page> callback is usually only called on DNS or TCP errors (e.g. the website is unavailable or the domain does not exist). <bug issue="2232">This cannot send or receive multiple headers with the same name.</bug> <bug issue="4133">This function fails with an `invalid url` error if the substring `"10."` appears anywhere in the URL, when `-allowlocalhttp` is not active. Where possible, this can be worked around by encoding the `.` character as `%2E`. **This is fixed in the next update.**</bug>⤶ <note>HTTP-requests that respond with a large body may return an `unsuccessful` error. Try using the [Range](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Range) header to download the file in chunks.</note> <note> HTTP-requests to destinations on private networks (such as `192.168.0.1`) won't work. <br/> To enable HTTP-requests to destinations on private networks use <page>Command Line Parameters</page> `-allowlocalhttp`. </note> </description> <realm>Shared and Menu</realm> <file line="46-L73">lua/includes/modules/http.lua</file> <args> <arg name="url" type="string">The url to of the website to post.</arg> <arg name="parameters" type="table">The post parameters (x-www-form-urlencoded) to be send to the server. **Keys and values must be strings**.</arg> <arg name="onSuccess" type="function" default="nil">Function to be called on success. Arguments are * <page>string</page> body * <page>string</page> size - equal to <page>string.len</page>(body). * <page>table</page> headers * <page>number</page> code - The HTTP success code.</arg> <arg name="onFailure" type="function" default="nil">Function to be called on failure. Arguments are * <page>string</page> error - The error message.</arg> <arg name="headers" type="table" default="{}">KeyValue table for headers.</arg> </args> </function> <example> <description> Write a file in PHP, and invoke it from Lua. The output below is written in the file, not in the console. ``` <?php $p = $_POST["p"]; $a = $_POST["a"]; $f = fopen("write.html", "w"); fwrite($f, "This is a test. $p $a\n"); fclose($f); ?> ``` </description> <code> http.Post( "http://localhost/post.php", { p = "Gmod", a = "Test" }, -- onSuccess function function( body, length, headers, code ) print( "Done!" ) end, -- onFailure function function( message ) print( message ) end ) </code> <output> ``` This is a test. Gmod Test ``` </output> </example>