an error occurred while attempting to publish .pbxi. unable to write data to the transport connection: an existing connection was forcibly closed by the remote host.
tried all things but could not find the problem
Related
We are getting intermittent failures while connecting to one of the backend system. When we looked at the logs we can see that the connection is getting closed by either wso2/backend. We are unbale to make out where exactly the problem is.? Please find the below logs we get immediately(1-3 millisecond) after sending a request.
WARN {org.apache.synapse.transport.passthru.TargetHandler} - Connection closed by target host before receiving the response Remote Address : backend.system.com/0.0.0.0:443
We are using wso2esb-5.0.0. Any suggestion will be appreciated.
Thanks
Here the backend has closed the connection for some reason. You may have to check backend logs and backend loadbalancer logs to find a clue.
Some common cases backends fail like this is are being unable to handle
Keepalive
Chunking
HTTP version (1.1 vs 1.0)
I have developed django with gcp cloud sql proxy not in trouble. But suddenly I can 't connect cloud sql with this message.
console message:
2019/03/15 11:48:41 Ready for new connections
2019/03/15 11:48:50 New connection for "my-project-instance"
2019/03/15 11:48:52 Reading data from local connection on 127.0.0.1:5432 had error: read tcp 127.0.0.1:5432->127.0.0.1:55125: wsarecv: An existing connection was forcibly closed by the remote host.
how can i fix this?
MySQL has a default wait_timeout value of 8 hours - any connections open for this length of time get forcibly closed.
You should use connection pooling (a great library for this in python is SQLAlchemy) and limit the connection duration to a value lower than this. You can see several examples of how to do this on the Managing Database Connections page.
There are so many questions about this issue but none has been able to address my issue specifically and I have yet to find any valid explanation of the error itself:
The underlying connection was closed: The connection was closed unexpectedly
In our situation we are making a call to a 3rd Party API via SSL. On my local PC I can connect to that API make a request and get a response back, but on an IIS Production server I get this error. The API is using OAuth to authenticate.
What exactly does it mean. Is the request leaving our server and rejected by the remote server, or is it not even leaving our server and our system is preventing it from making the request.
Some more information incase anyone may know what the issue is:
No known changes to any networking, servers, routing, security (apparently)
No code changes recently
According to our own internal logging, the issue started off as an ocassional 403 Error-Forbidden then we saw a number of Cannot Connect to Remote Server. Eventually it failed with The underlying connection was closed: The connection was closed unexpectedly.
Can someone please explain what the actual error means? If anyone has experienced this in a similar situation and can shed some light, that would be greatly appreciated.
The underlying connection was closed: The connection was closed unexpectedly
This just says, that (probably the remote end) closed the TCP connection which underlies the SSL connection. Usually an SSL alert should be sent back on SSL related errors, but some stacks instead close the connection. It might also be that the peer does not expect SSL at all and thus closes the connection because of invalid data.
On my local PC I can connect to that API make a request and get a response back, but on an IIS Production server I get this error.
It is hard to say what the problem might be, but if this is not only the same API but also the same server then the problem must be related to differences in the client. This can be support in ciphers, TLS versions, client certificates etc which can be different between machines. If this is not even the same server you should make sure that the problem is not server related by contacting the non-working server with the working client.
A good idea is also to make a TCP dump (wireshark) and compare the handshakes.
More detailed problem analysis can only be done when you provide more details about the problem, see http://noxxi.de/howto/ssl-debugging.html#hdr2.2 on what might be useful information.
I'm getting a "Socket Error: Connection reset by peer" message using the tradeclient c++ demo code from the quickfix download.
another user commented that it was related to network issues. if anyone has the solution it would be appreciated.
QuickFix C++ Socket Error Connection Reset By Peer?
<20141221-17:32:11.049, FIX.4.4:myusername->hostusername, event>
(Created session)
<20141221-17:32:11.056, FIX.4.4:myusername-> hostusername, event>
(Connecting to fix.hostusername.com on port 5001)
<20141221-17:32:11.221, FIX.4.4:myusername-> hostusername, outgoing>
(8=FIX.4.49=10735=A34=149=myusername =20141221-17:32:11.21856= hostusername 98=0108=30141=Y10=000)
<20141221-17:32:11.221, FIX.4.4:myusername-> hostusername, event>
(Initiated logon request)
<20141221-17:32:11.253, FIX.4.4:myusername-> hostusername, event>
(Socket Error: Connection reset by peer.)
<20141221-17:32:11.253, FIX.4.4:myusername-> hostusername, event>
(Disconnecting)
think i found the reason. the host I'm trying to connect with is using quickfix java which supports SSL. the quickfix c++ client doesn't seem to support the SSL enable tag in the session settings. finally had to resort to wireshark to determine this. i searched all over the web and many people were reporting this similar error. i hope this post saves them any anyone in the future from debugging endlessly to solve this "Socket Error: Connection reset by peer" error.
Two reasons I am aware of for "Socket Error: Connection reset by peer" are:-
1) Your SenderCompId/TargetCompId does not match with that of other side. In that case just make sure you are using correct one.
2) Other one is that sequence number expected by server is something different what you are sending. In that case just try with ResetOnLogon field ( in your registry file )to No and check if that resolves the issue.
There can be many reasons for this error. However, I doubt it that network is responsible for this error as connection request has been sent to server properly. You could search through the internet for wider range of answers.
Could well be firewall, have you the right IP and port, and permission to get there?
think i found the reason. the host I'm trying to connect with is using quickfix java which supports SSL. the quickfix c++ client doesn't seem to support the SSL enable tag in the session settings. finally had to resort to wireshark to determine this. i searched all over the web and many people were reporting this similar error. i hope this post saves them any anyone in the future from debugging endlessly to solve this "Socket Error: Connection reset by peer" error. – geiger zaehler
We got this error message when we had not correctly imported the security certificate.
I'm running MAMP and WSO2 Carbon data service at the same time. What I'm trying to do is adding a new data source by connecting to mysql server. I have added the com.mysql.jdbc.Driver to lib folder.
Full error which I'm getting when trying to test the connection
Error establishing data source connection: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
In my case simply putting useSSL=false on end of connection string did the magic
jdbc:mysql://localhost:3306/USERS?useSSL=false
This seems to be a problem with mysql server configuration. Please have a look at following threads.
Solving a "communications link failure" with JDBC and MySQL
Why I get this error 'Communications link failure The last packet sent...' when connecting to MySQL with Java (Netbeans)?
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:Communications link failure
I tried this and it's working by my side:
jdbc:mysql://localhost:3306/wso2_test?useUnicode=true&characterEncoding=UTF-8