Web Remote Control

  1. Remote Control机制的运作需要开启RemoteControl插件
  2. Remote Control Web Application的运作需要在开启RemoteControl插件的基础上额外开启RemoteControlWebInterface插件
  3. 浏览器端的布局结果存储在RemoteControlPreset资产里。若不保存对Preset资产的修改，则在web server重启后，client端的布局修改会丢失。

管理Server

The Web Remote Control system relies on a web server launched and managed by the Unreal Editor process. For your security, this server only runs when you explicitly activate it. To control when the server runs, you use a few simple console commands:
CommandDescription
WebControl.StartServerStarts the web server and begins listening for incoming requests on port 30010.
WebControl.StopServerStops the web server, preventing any more requests to your Unreal Editor instance from being handled.
WebControl.EnableServerOnStartupStarts the web server automatically whenever this Project is opened in the Unreal Engine in any supported mode: in the main Unreal Editor window, in a Play In Editor (PIE) session, or in the -game mode of the Unreal Editor.
关于端口的问题，涉及3个server的监听端口：
Remote Control Web Server
Http Server Port: 30010
WebSocket Server Port: 30020
Remote Control Web Interface
Http Port: 7000

Web Remote Control依赖的nodejs版本

nodejs requirements
UE4.27

UE4.27.2 RemoteControl的坑

升级到4.27.2后，需要在swtichboard的nDisplaySettings的Extra Cmd Line Args字段添加-RCWebControlEnable -RCWebInterfaceEnable这两个参数。这样WebRemoteControl才能正常工作。
要在打包后的程序中使用RemoteControlWebInterface，还需要在目标机上运行程序的同时，执行WebApp。也可以把RemoteControlWebInterface插件下的WebApp目录拷贝到打包程序目录下。再写一个Run.bat脚本放在打包程序目录下，用来一次性启动这两个程序： 
 start My.exe -RCWebControlEnable -RCWebInterfaceEnable
 cd .\WebApp
 call .\Start.bat

No preset available → ...

模拟POST请求 
 fetch(new Request('http://127.0.0.1:30010/remote/preset/NewRemoteControlPreset',{
     method:'GET', 
     headers: {'Content-Type': 'application/x-www-form-urlencoded'}
 }))
Web端提示【No preset available】的错误时，除了要如图所示使用VaRest插件发起特定URL连接外，还有一点必须注意：RemoteControlPreset资产必须放在Content目录下，不能放在子目录。 可以放在Plugin的Content下。
  • Microsoft Edge浏览器的模拟请求插件：ReqBin HTTP API Client
  • vsc的thunder client插件更好用，且自动记录每一条request
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