Java Firebase Admin SDK connect behind proxy

[Gusti Arya]

Hi, I am new to firebase, I am trying to connect to firebase db behind my company proxy,I followed this approach but still no luck.

here my stack trace.

4517 [firebase-websocket-worker] ERROR 

    com.google.firebase.database.connection.WebsocketConnection - [ws_1] 

    WebSocket error

    io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection 

    refused: no further information: testing- 

    5786c.firebaseio.com/35.201.97.85:443

at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)

at sun.nio.ch.SocketChannelImpl.finishConnect(Unknown Source)

at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:325)

at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:340)

at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:633)

at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580)

at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497)

at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459)

at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:886)

at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)

at java.util.concurrent.FutureTask.run(Unknown Source)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(Unknown Source)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

    Caused by: java.net.ConnectException: Connection refused: no further information

... 16 more

any suggestion?

[Peter Saitz]

The developers of Java Firebase Admin SDK have forgotten to implement the proxy functionality.

Note: In Microsoft‘s Azure Java library it took 2 or 3 years until this missing feature was been added. Hopefully, Google will be faster.

Java’s system properties „http.proxyHost“ and „http.proxyPort“ are used by Java classes in package java.net.* only.

[sharpkingdom]

I looked at the source code. When Firebase establishes a websocket connection, it uses NettyWebSocketClient and does not use the proxy I had set.