i have error with start debug i want to show print(response.body);
Finished with error: Failed to establish connection with the application instance in Chrome.
This can happen if the websocket connection used by the web tooling is unable to correctly establish a connection, for example due to a firewall.
Related
The app must connect to a socket server hosted at 192.168.0.10:35000 by an IoT device through a WiFi network it provides while having an active data connection.
The following code throws an error:
SocketException: Connection timed out, host: 192.168.0.10, port: 35000
this._socket = await Socket.connect('192.168.0.10', 35000);
If I disable the mobile's Data connection, it connects as it should. I think that confirms that the Socket is not bound to the WiFi network.
On a native Android environment, I believe that the ConnectivityManager.bindProcessToNetwork() method, or the Network.getSocketFactory() method, would do the trick.
Is there any way to achieve this without writing native code?
Some extra information:
Running InternetAddress.lookup() on '192.168.0.10' gives the following:
Running NetworkInterfaces.list() gives the following:
I have installed the wildfly application server on Ubuntu 16.04; version: 10.1.0.Final, release-version: 2.2.0.Final
The server is configured with an port-offset of 100 so that:
Http management interface listening on http://127.0.0.1:10090/management
Admin console listening on http://127.0.0.1:10090
Everything seems to work for a while:
The management interface is accessible and I have also deployed a tiny sample application which works correctly (already undeployed, therefore shouldn't be the problem). After some minutes I suddenly get the following:
jboss-cli.sh[15286]: Failed to connect to the controller: The controller is not available at localhost:9990: java.net.ConnectException: WFLYPRT0053: Could not connect to http-remoting://localhost:9990. The connection failed: WFLYPRT0053: Could not connect to http-remoting://localhost:9990. The connection failed: Connection refused
I didn't do anything, just waited. Afterwards the instance seems to be unreachable.
After days of research I'm now ending up with asking you what's wrong with my configuration or what I'm missing.
And what is trying to connect to http-remoting://localhost:9990 (it's not me) and especially why is it doing so?
Thank you very much!
It's because your management controller is unreachable.
Possible reasons could be either your jboss is down or network is not allowing you to connect to it.
You can check that by typing command: telnet
It will show you the connection
I am using Secure Gateway of ibm blue-mix.
However, I do not know how to do "500 Error: Failed to establish a backside connection" error.
The situation is as follows:
When accessing, the following message will be displayed on the Secure Gateway client.
[INFO] (Client ID keqdVTJMrJt_prF) Connection #1 is being estabrished to xxx.xxx.xxx.xxx:nnn
The display of the log is
"[INFO ] SRVE0242I: [ChisInq003] [/ChisInq003] [Servlet.ChisServlet003]: Initialization successful.".
However, if it takes about two minutes, "500 Error" will be displayed.
Does anyone know what to do?
If the connection fails after ~2 minutes, it sounds like the connection between the Secure Gateway Client and the host:port it is trying to connect to is timing out which implies a network issue.
Are there any additional Secure Gateway Client logs that can be shared that might contain an error? What is it that you're trying to connect to via Secure Gateway?
i have a problem,
when i tried to Manage Nuget Packages VS2017 showed me this message:
[nuget.org] Unable to load the service index for source https://api.nuget.org/v3/index.json.
An error occurred while sending the request.
The underlying connection was closed: An unexpected error occurred on a send.
Unable to read data from the transport connection: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond
Please can you help me to solve this problem??
I'm going crazy
Thank you
That is a bug in VS 2017. (I had the same problem). This has been fixed in VS version 15.1 . To fix this problem update your VS through vs_Community.exe installer (which you can download here).
I am trying to debug server side code (running on Tomcat) using eclipse's remote debug option. This issues is showing up intermittently and rest of the times it works just fine. I have made sure
1) Server side has got the latest Jars - I copied the .war file and redeployed.
2) Tomcat is running on debug mode and firewall settings have been modified to allow connections on the debug port.
3) Verified that before the attempt to connect, on the server its listening on the debug port and afterwards it shows that connection has been established.
but Eclipse is throwing an error popup saying "Its unable to connect to the remote VM" and sometimes it times out waiting for a packet #
Should I be checking for some more things? Are there any more log files by eclipse that throws light on what went wrong? Please help
This is can be a solution sometimes if your debugger fails to connect to debugger with an error something like "timed out while waiting for a packet #packetnumber" then it could be because of the low timeout setting and slow network. One can increase the timeout value using debug setting in the eclipse preferences.