Clone of Prosody mod_post_msg allowing sending multicast messages/chat via JSON + PHP script example.

mod_post_multicast_msg.lua

module:depends"http"

local jid_split = require "util.jid".split;
local jid_prep = require "util.jid".prep;
local msg = require "util.stanza".message;
local test_password = require "core.usermanager".test_password;
local b64_decode = require "util.encodings".base64.decode;
local json = require "util.json";

local function require_valid_user(f)
	return function(event, path)
		local request = event.request;
		local response = event.response;
		local headers = request.headers;
		if not headers.authorization then
			response.headers.www_authenticate = ("Basic realm=%q"):format(module.host.."/"..module.name);
			return 401
		end
		local from_jid, password = b64_decode(headers.authorization:match"[^ ]*$"):match"([^:]*):(.*)";
		from_jid = jid_prep(from_jid);
		if from_jid and password then
			local user, host = jid_split(from_jid);
			local ok, err = test_password(user, host, password);
			if ok and user and host then
				module:log("debug", "Authed as %s", from_jid);
				return f(event, path, from_jid);
			elseif err then
				module:log("debug", "User failed authentication: %s", err);
			end
		end
		return 401
	end
end

local function handle_post(event, path, authed_user)
	local request = event.request;
	local response = event.response;
	local headers = request.headers;

	local body_type = headers.content_type;
	local to = jid_prep(path);
	local message;
		
	if body_type ~= "application/json" then return 415; end

	local post_body = json.decode(request.body);
	if not post_body then return 400; end
	
	for jid in string.gmatch(post_body.to, "%S+") do
		message = msg({ to = jid, from = post_body.from, type = post_body.type or "chat"}, post_body.body);
		module:log("debug", "Sending %s", tostring(message));
		module:send(message);
	end
	return 201;

end

module:provides("http", {
	default_path = "/msg";
	route = {
		["POST /*"] = require_valid_user(handle_post);
		OPTIONS = function(e)
			local headers = e.response.headers;
			headers.allow = "POST";
			headers.accept = "application/json";
			return 200;
		end;
	}
});

send.php

<?php

function SendJabber($from, $to, $msg) {
		
	$message = $msg;
	
	if(is_array($to)) {
		$adr = implode(" ", $to);
	} else {
		$adr = $to;
	};

	$ch = curl_init();

	curl_setopt($ch, CURLOPT_URL, "https://example.com:5281/msg/");
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_FRESH_CONNECT, false);
	curl_setopt($ch, CURLOPT_TIMEOUT, 5);
	curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_POST, 1);
	curl_setopt($ch, CURLOPT_USERPWD, "user@example.com" . ":" . "password");

	$data = array("body" => "$message", "type" => "message", "to" => "$adr", "from" => "$from");
	$data_string = json_encode($data);
	curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
	
	curl_setopt($ch, CURLOPT_HTTPHEADER, array(
		'Content-Type: application/json',
		'Content-Length: ' . strlen($data_string))
	);

	$result = curl_exec($ch);
	if (curl_errno($ch)) {
		echo 'Error:' . curl_error($ch);
	};

	curl_close ($ch);
	
};

?>

what is the correct type to send to muc? I've been trying groupchat as indicated here, but no dice.