I used Swoole to build a websocket service, a little doubt about accessing IP.

Install Swoole official Demo code to build a WebSocket,
Service-side code: ws_server.php

//创建websocket服务器对象，监听0.0.0.0:9502端口$ws = new swoole_websocket_server("0.0.0.0", 9502);//监听WebSocket连接打开事件$ws->on('open', function ($ws, $request) {    var_dump($request->fd, $request->get, $request->server);    $ws->push($request->fd, "hello, welcome\n");});//监听WebSocket消息事件$ws->on('message', function ($ws, $frame) {    echo "Message: {$frame->data}\n";    $ws->push($frame->fd, "server: {$frame->data}");});//监听WebSocket连接关闭事件$ws->on('close', function ($ws, $fd) {    echo "client-{$fd} is closed\n";});$ws->start();

Client code: index.html

I use the command to open the ws_server.php server, the client file index.html placed in the Apache Web root directory, I visit localhost, the console console can see "Connected to WebSocket server." And so on, to prove that the visit was successful
But if I change ws_server.php's listening IP to other (such as 192.168.0.233:9502), then change the index.html related code to WSServer = ' ws://192.168.0.233:9502 ';
Why did the visit not succeed?

Reply content:

Install Swoole official Demo code to build a WebSocket,
Service-side code: ws_server.php

//创建websocket服务器对象，监听0.0.0.0:9502端口$ws = new swoole_websocket_server("0.0.0.0", 9502);//监听WebSocket连接打开事件$ws->on('open', function ($ws, $request) {    var_dump($request->fd, $request->get, $request->server);    $ws->push($request->fd, "hello, welcome\n");});//监听WebSocket消息事件$ws->on('message', function ($ws, $frame) {    echo "Message: {$frame->data}\n";    $ws->push($frame->fd, "server: {$frame->data}");});//监听WebSocket连接关闭事件$ws->on('close', function ($ws, $fd) {    echo "client-{$fd} is closed\n";});$ws->start();

Client code: index.html

I use the command to open the ws_server.php server, the client file index.html placed in the Apache Web root directory, I visit localhost, the console console can see "Connected to WebSocket server." And so on, to prove that the visit was successful
But if I change ws_server.php's listening IP to other (such as 192.168.0.233:9502), then change the index.html related code to WSServer = ' ws://192.168.0.233:9502 ';
Why did the visit not succeed?

Set to 0.0.0.0 represent a connection that listens to all address sources, so you can connect.
Instead of being set to 192.168.0.233 accept 192.168.0.233 connections from this host, your local host is not 192.168.0.233 , and the connection naturally cannot be established.

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