# Processing to Socket.Io on Unubo
**URL:** https://discourse.processing.org/t/processing-to-socket-io-on-unubo/9182
**Category:** Libraries
**Created:** [March 11, 2019, 4:21am UTC](https://discourse.processing.org/t/processing-to-socket-io-on-unubo/9182 "2019-03-11T04:21:27Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Quillbert1](https://discourse.processing.org/u/Quillbert1)
#### Post date: [March 11, 2019, 4:21am UTC](https://discourse.processing.org/t/processing-to-socket-io-on-unubo/9182/1 "2019-03-11T04:21:27Z")
Hi, I have a [socket.io](http://socket.io) app hosted on a website called Unubo ([paint.unubo.cloud](http://paint.unubo.cloud)), and when I try to connect to it using the Websockets library for processing, I get this error:
```auto
onError(UpgradeException: Didn't switch protocols, expected status <101>, but got <301>)
org.eclipse.jetty.websocket.api.UpgradeException: Didn't switch protocols, expected status <101>, but got <301>
at org.eclipse.jetty.websocket.client.io.UpgradeConnection.validateResponse(UpgradeConnection.java:352)
at org.eclipse.jetty.websocket.client.io.UpgradeConnection.read(UpgradeConnection.java:280)
at org.eclipse.jetty.websocket.client.io.UpgradeConnection.onFillable(UpgradeConnection.java:196)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:261)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:75)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:147)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
at java.lang.Thread.run(Thread.java:748)
```
Does anybody have any idea what this means, or how to fix it?
Here is my processing code:
```auto
import websockets.*;
WebsocketClient w;
void setup() {
size(300,300);
w = new WebsocketClient(this, "ws://paint.unubo.cloud/socket.io/?EIO=3&transport=websocket");
}
void draw() {
}
void keyPressed() {
w.sendMessage("42[\"chat message\",\"hello from processing\"]");
}
void webSocketEvent(String msg) {
println(msg);
}
```
and my server code is here
[https://github.com/Quillbert/net-paint](https://github.com/Quillbert/net-paint)
---
### Author:  [@hamoid](https://discourse.processing.org/u/hamoid)
#### Post date: [March 11, 2019, 7:33am UTC](https://discourse.processing.org/t/processing-to-socket-io-on-unubo/9182/2 "2019-03-11T07:33:45Z")
Hi, does it work if you replace `ws:` with `wss:`? [https://stackoverflow.com/questions/46557485/difference-between-ws-and-wss](https://stackoverflow.com/questions/46557485/difference-between-ws-and-wss)
---
### Author:  [@Quillbert1](https://discourse.processing.org/u/Quillbert1)
#### Post date: [March 11, 2019, 12:20pm UTC](https://discourse.processing.org/t/processing-to-socket-io-on-unubo/9182/3 "2019-03-11T12:20:51Z")
If I change it to wss I get this error:
```auto
onError(IOException: Cannot init SSL)
java.io.IOException: Cannot init SSL
at org.eclipse.jetty.websocket.client.io.WebSocketClientSelectorManager.newConnection(WebSocketClientSelectorManager.java:98)
at org.eclipse.jetty.io.ManagedSelector.createEndPoint(ManagedSelector.java:411)
at org.eclipse.jetty.io.ManagedSelector.access$1600(ManagedSelector.java:56)
at org.eclipse.jetty.io.ManagedSelector$CreateEndPoint.run(ManagedSelector.java:587)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.execute(ExecuteProduceConsume.java:101)
at org.eclipse.jetty.io.ManagedSelector.run(ManagedSelector.java:136)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
at java.lang.Thread.run(Thread.java:748)
onError(IOException: Cannot init SSL)
java.io.IOException: Cannot init SSL
at org.eclipse.jetty.websocket.client.io.WebSocketClientSelectorManager.newConnection(WebSocketClientSelectorManager.java:98)
at org.eclipse.jetty.io.ManagedSelector.createEndPoint(ManagedSelector.java:411)
at org.eclipse.jetty.io.ManagedSelector.access$1600(ManagedSelector.java:56)
at org.eclipse.jetty.io.ManagedSelector$CreateEndPoint.run(ManagedSelector.java:587)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.execute(ExecuteProduceConsume.java:101)
at org.eclipse.jetty.io.ManagedSelector.run(ManagedSelector.java:136)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
at java.lang.Thread.run(Thread.java:748)
```
---
### Author:  [@hamoid](https://discourse.processing.org/u/hamoid)
#### Post date: [March 14, 2019, 2:56pm UTC](https://discourse.processing.org/t/processing-to-socket-io-on-unubo/9182/4 "2019-03-14T14:56:38Z")
Not sure what’s going on. The client is expecting a 101 code (which means things went ok) but it receives a 301 code (which is a redirect to a different address). I don’t know why the redirect, nor to what new address it’s being redirected to.
---
### Author:  [@Quillbert1](https://discourse.processing.org/u/Quillbert1)
#### Post date: [March 14, 2019, 4:35pm UTC](https://discourse.processing.org/t/processing-to-socket-io-on-unubo/9182/5 "2019-03-14T16:35:13Z")
I just found out that it was the wss thing, but the library doesn’t support ssl, so I will have to find another library. I will probably use too tall nate’s java library.