add addPing query param for testing

README.MD

@@ -176,6 +176,7 @@ Server specific:
 - `?lockConnect=true` - Only works then `ip` parameter is set. Disables cancel/save buttons and all inputs in the connect screen already set as parameters. Useful for integrates iframes.
 - `?autoConnect=true` - Only works then `ip` and `version` parameters are set and `allowAutoConnect` is `true` in config.json! Directly connects to the specified server. Useful for integrates iframes.
 - `?serversList=<list_or_url>` - `<list_or_url>` can be a list of servers in the format `ip:version,ip` or a url to a json file with the same format (array) or a txt file with line-delimited list of server IPs.
+- `?addPing=<ping>` - Add a latency to both sides of the connection. Useful for testing ping issues. For example `?addPing=100` will add 200ms to your ping.
 
 Single player specific:
 

src/appParams.ts

@@ -47,6 +47,7 @@ export type AppQsParams = {
   connectText?: string
   freezeSettings?: string
   testIosCrash?: string
+  addPing?: string
 
   // Replay params
   replayFilter?: string

src/index.ts

@@ -305,7 +305,7 @@ export async function connect (connectOptions: ConnectOptions) {
 
   if (connectOptions.server && !connectOptions.viewerWsConnect && !parsedServer.isWebSocket) {
     console.log(`using proxy ${proxy.host}:${proxy.port || location.port}`)
-    net['setProxy']({ hostname: proxy.host, port: proxy.port, headers: { Authorization: `Bearer ${new URLSearchParams(location.search).get('token') ?? ''}` } })
+    net['setProxy']({ hostname: proxy.host, port: proxy.port, headers: { Authorization: `Bearer ${new URLSearchParams(location.search).get('token') ?? ''}` }, artificialDelay: appQueryParams.addPing ? Number(appQueryParams.addPing) : undefined })
   }
 
   const renderDistance = singleplayer ? renderDistanceSingleplayer : multiplayerRenderDistance

src/mineflayer/mc-protocol.ts

@@ -130,7 +130,8 @@ export const setProxy = (proxyParams: ProxyParams) => {
   net['setProxy']({
     hostname: proxy.host,
     port: proxy.port,
-    headers: proxyParams.headers
+    headers: proxyParams.headers,
+    artificialDelay: appQueryParams.addPing ? Number(appQueryParams.addPing) : undefined
   })
   return {
     proxy