我想发送一条消息给我的Phoenix应用程序的用户频道。我加入了user_channel.ex
中的频道为users:user_token
的user_token。我通过调用广播方法从另一个名为toy_controller
的控制器成功完成。广播方法在用户频道中。我写了一个jQuery文件来处理事件。我一直在寻找可以从项目之外向同一频道发送消息的东西,因为我想做一些物联网的东西。我已经尝试了一个名为occamy.socket
的python模块以及它在内部使用的Phoenix的JS客户端。然后,我总是发现断开连接。我无法弄清凤凰网络连接的确切地址。如果我正在使用该项目文件夹中的Phoenix npm库,它总是说ReferenceError: window is not defined
。而且,我认为这是因为在web/static/js/socket.js
文件插座的初始化部分的地方它写成菲尼克斯频道发送来自项目外客户的消息
let socket = new Socket("/socket", {params: {token: window.userToken}})
,但我不知道。我试过的东西是
var Socket = require("phoenix-socket").Socket;
var socket = new Socket("ws://localhost:4000/socket");
在python客户端,我也试图连接到这个地址,并得到了断开连接错误。我想为了IoT的目的而做它,我想监视用户的传感器数据。每个用户都将拥有自己的传感器进行监控。因此,我已将频道topic:subtopic
频道配置为users:user_token
。我需要使用用户的这些独特的令牌从我的树莓派发送消息到这个频道。下面给出了我的user_channel,user.js,app.js和socket.js。
//web/static/js/socket.js
import {Socket} from "phoenix"
let socket = new Socket("/socket", {params: {token: window.userToken}})
socket.connect()
export default socket
//web/static/app.js
import "phoenix_html"
import user from "./user"
#web/channels/user_channel.ex
defmodule Tworit.UserChannel do
use Tworit.Web, :channel
def join("users:" <> user_token, payload, socket) do
if authorized?(payload) do
{:ok, "Joined To User:#{user_token}", socket}
else
{:error, %{reason: "unauthorized"}}
end
end
def handle_in("ping", payload, socket) do
{:reply, {:ok, payload}, socket}
end
def handle_in("shout", payload, socket) do
broadcast socket, "shout", payload
{:noreply, socket}
end
def handle_out(event, payload, socket) do
push socket, event, payload
{:noreply, socket}
end
defp authorized?(_payload) do
true
end
def broadcast_change(toy, current_user) do
payload = %{
"name" => toy.name,
"body" => toy.body
}
Tworit.Endpoint.broadcast("users:#{current_user.token}", "change", payload)
end
end
//web/static/js/user.js
import socket from "./socket"
$(function() {
let ul = $("ul#em")
if (ul.length) {
var token = ul.data("id")
var topic = "users:" + token
\t \t
// Join the topic
let channel = socket.channel(topic, {})
channel.join()
.receive("ok", data => {
console.log("Joined topic", topic)
})
.receive("error", resp => {
console.log("Unable to join topic", topic)
})
channel.on("change", toy => {
\t console.log("Change:", toy);
\t $("#message").append(toy["name"])
})
}
});