Official reasons for "Software caused connection abort: socket write error"
This error can occur when the local network system aborts a connection, such as when WinSock closes an established connection after data retransmission fails (receiver never acknowledges data sent on a datastream socket).
Solution 2
The java.net.SocketException is thrown when there is an error creating or accessing a socket (such as TCP). This usually can be caused when the server has terminated the connection (without properly closing it), so before getting the full response. In most cases this can be caused either by the timeout issue (e.g. the response takes too much time or server is overloaded with the requests), or the client sent the SYN, but it didn’t receive ACK (acknowledgment of the connection termination). For timeout issues, you can consider increasing the timeout value.
The Socket Exception usually comes with the specified detail message about the issue.
Example of detailed messages:
Software caused connection abort: recv failed.
The error indicates an attempt to send the message and the connection has been aborted by your server. If this happened while connecting to the database, this can be related to using not compatible Connector/J JDBC driver.
Possible solution: Make sure you’ve proper libraries/drivers in your CLASSPATH.
Software caused connection abort: connect.
This can happen when there is a problem to connect to the remote. For example due to virus-checker rejecting the remote mail requests.
Possible solution: Check Virus scan service whether it’s blocking the port for the outgoing requests for connections.
Software caused connection abort: socket write error.
Possible solution: Make sure you’re writing the correct length of bytes to the stream. So double check what you’re sending. See this thread.
Connection reset by peer: socket write error / Connection aborted by peer: socket write error
The application did not check whether keep-alive connection had been timed out on the server side.
Possible solution: Ensure that the HttpClient is non-null before reading from the connection. E13222_01
The connection has been terminated by the peer (server).
The connection has been either terminated by the client or closed by the server end of the connection due to request with the request.
Solution 3
I have seen this most often when a corporate firewall on a workstation/laptop gets in the way, it kills the connection.
eg. I have a server process and a client process on the same machine. The server is listening on all interfaces (0.0.0.0) and the client attempts a connection to the public/home interface (note not the loopback interface 127.0.0.1).
If the machine is has its network disconnected (eg wifi turned off) then the connection is formed. If the machine is connected to the corporate network (directly or vpn) then the connection is formed.
However, if the machine is connected to a public wifi (or home network) then the firewall kicks in an kills the connection. In this situation connecting the client to the loopback interface works fine, just not to the home/public interface.
Hope this helps.
Solution 4
To prove which component fails I would monitor the TCP/IP communication using wireshark and look who is actaully closing the port, also timeouts could be relevant.
Solution 5
For anyone using simple Client Server programms and getting this error, it is a problem of unclosed (or closed to early) Input or Output Streams.
Software caused connection abort: socket write error
I’m new to the forums, so I hope this isn’t in the wrong place.
I have that «Software caused connection abort: socket write error» exception error that i’ve never meet before.
Basically what im trying to do is the following:
— a client connect to a server using sslsocket.
— server receive the connection and reply with the first part of the data and keep the connection open.
— then client receive the reply and request for another data using the same socket connection
— then server receive the next request and reply with the second part of the data and close the connection when the loop is finish.
what im trying to do is actually to chunk the download size. consider I need to download a 20MB of data from the server, using a single request is fine, but client have to wait for sometime until all the data is downloaded. so im trying to chunk the data into several part, and the server will send the chunk of data one by one. so the moment client receive the first part of the data, it will display it directly and at the same time will process the next data.
creating a new socket request for each chunk of data will be slow since it has to keep open and close the socket to server several times.
so in short, im trying to utilize one socket connection to do several data communication between client and server.
can you help point out what i did wrong in doing this. or a link to any site providing example in doing this.
Thanking you in advance for your help and sorry for the length of the post..
[ March 09, 2008: Message edited by: kguuy kku ]
[kguuy kku:] I’m new to the forums, so I hope this isn’t in the wrong place.
You are at the right place.
[kguuy kku:] sorry for the length of the post..
It is your post, I have tested the waters and have not seen any of the moderators discourage large posts of code where a matter of this consequence is involved. The only time I saw anyone mention large posts was when someone placed a large — repetitive data file listing that could have been inferred from the first and last few lines. Your style is excellent, we have many experienced workers here at Java Ranch who can provide deep insight. Your design approach is excellent, chunking the traffic.
// Can we actually send ourselves and then receive ourselves?
You write the Output stream once, then drop into the loop. Makes sense but is this to initiate the transaction stream ? For timing, I would use long time = System.currentTimeMillis(); Parsing dates with SimpleDateFormat would be for display, internal time in code should be handled as a numeric data type.
«Software caused connection abort: socket write error«
I have not seen this error message before, are you using a data management package from a vendor? Sockets have what is called keepAlive value, I do not know how to set it but if the error is socket write error: Then we probably should examine whether the SSLException derives from some mechanics of the socket connection.
Again, your posting style is excellent and we have many masters here and few rules. A+ on your post.
[ March 14, 2008: Message edited by: Nicholas Jordan ]
«The differential equations that describe dynamic interactions of power generators are similar to that of the gravitational interplay among celestial bodies, which is chaotic in nature.»
How To Fix the Error “Connection Reset by Peer”
By Lee Stanton Lee Stanton Author Lee Stanton is a versatile writer with a concentration on the software landscape, covering both mobile and desktop applications as well as online technologies. Read more August 31, 2022
Have you gotten error messages like “Connection reset by peer” or “Socket write error?” Maybe you’re curious about what causes them and what they mean.
This article will explain these error messages and why we receive them.
What Does it Mean?
A “connection reset by peer” error means the TCP stream was closed, for whatever reason, from the other end of the connection. In other words, the TCP RST was sent and received, but the connection is closed.
This issue may happen when you send a packet on your end of the connection, but the other end doesn’t recognize the connection. It’ll send back a packet with an RST bit to close the connection.
The error can happen when the peer crashes. Other times, it’s due to poorly-written applications that don’t shut their TCP connections properly.
A possible solution to this is editing the hosts.deny file. Type or paste this line for those using nano on a Debian-based system.
sudo nano /etc/hosts.deny
Look for your local IP address or host name in the file.
- Log in to your remote server.
- After accessing the file and clearing the IP or hostnames, save and exit.
- Try to reconnect using SSH.
- Type this line as a precaution:
sudo nano /etc/hosts.allow
- Open this file and add your hostname and IP address.
- Save and exit the file.
- Try to establish an SSH connection again.
It’s essential to remember that once you enable these settings, you restrict the ability to maintain or control remote servers. Only proceed after understanding the risks.
Modify Fail2ban
Fail2ban protects users from brute-force attacks, and attempting to connect multiple times may fool the software into thinking you’re an attacker. As a result, you need to configure the file and add the IP or IP ranges to the white list.
- Access your remote server.
- Enter “sudo nano /etc/fail2ban/jail.conf”.
- Once you’re in the file, add the IP address or range to the “ignoreip =+ line”.
- Save and exit.
From then on, Fail2ban will let you through.
Check sshd_config
If the error persists, the problem may lie in the sshd_config file. Try these steps to resolve the issue.
- Enter “tail -f /var/log/auth.log” to read the latest log entries.
- Once you find clues, type and execute “sudo nano /etc/ssh/sshd_config”.
- Edit the file so your system can accept more connections.
- Save the file.
- Restart the sshd service.
Unless you’re familiar with the variable, try not to edit it. It may result in an unreachable server. Should none of these solutions work, contact your host for assistance.
Connection Reset by Peer with a Socket Write Error
Sometimes you could have issues connecting to a remote computer, and you’ll receive the “Connection reset by peer socket write error.” Several possible causes exist, such as abruptly terminated connections, the socket receiving a command to close, and more.
The first order of business is finding out whether your server is reachable.
- Open the Command Prompt.
- Type “ping” along with the server’s address. Execute the command.
- Run “tracert” and the server address to see if the request is successful.
- Execute “telnet” and enter the server address to see if the local machine ports are open.
- Should the connection fail, you must run SDEINTERCEPT and diagnose the problem.
Occasionally, this error comes with “SocketException.” It occurs when data is written or read to or from a closed socket connection. Below are some possible root causes.
- Firewalls closing the socket connections
- A slow network connection
- Lengthy idle connection
- Application errors
A slow connection may be alleviated by setting a higher socket timeout period. That will prevent any sockets from closing before connections are possible.
As for firewalls, you can either turn them off or configure them to prevent a SocketException.
The best solution for idle connections is sending heartbeat messages. These are periodic and prevent server idling, which makes the server stop and save resources.
One of the best solutions to a SocketException is to surround or throw it with a try-catch block. Close the connection to the server and start a new one. You may resolve the error this way.
Strangely, Adobe claims you can ignore the error.
Connection Reset by Peer with a cURL Command
A cURL error 56 is sometimes encountered by clients when trying to connect to the server. It’s usually because the server fails to receive any incoming network information. The following are more precise causes:
- Idle server connections
- URL whitespace
- Restrictions in the firewall
A server upgrade, cURL update, and firewall configuration usually fix the idling server issue. It’s also helpful to set the Maximum Transmission Unit to 1500 bytes, the default value.
A problematic URL is enough to trigger cURL 56 errors too. Simply updating the repository should restore the server’s functionality.
Whitespace is also easily removed. The command to do that does remove the whitespace without distinction. However, if the URL does have intentional whitespace, it should be left alone.
Contact your host for assistance if none of these solutions are helping.
Additional FAQs
What is a SocketException?
A SocketException is when a socket error occurs. Both Socket and Dns classes throw this error when the network isn’t configured correctly.
Why are sockets closed?
Should your server sockets be closed, it may be due to a terminated connection, but there isn’t a specific provided reason. The Driver isn’t aware or sure of what happened to the connection.
What is a cURL error?
There are many cURL errors, but they often result from outdated PHP or cURL versions. They don’t have anything to do with SSLs but are a problem with the server. You usually won’t notice anything on your website’s front end.
Back to Normal
Connection reset by peer errors come in various forms, and it’s impossible to cover them all in one article. However, some of the solutions above tend to help address commonly-encountered problems. If all else fails, it’s best to consult a professional or host.
Which of these errors have you run into? Do you know of other solutions? Let us know in the comments section below.
Official reasons for "Software caused connection abort: socket write error"
Sun’s JVM source doesn’t contain this exact message, but I think the text Software caused connection abort: socket write error is from the native implementation of SocketOutputStream :
Regarding #2
My guess is that it is caused when the client has terminated the connection, before getting the full response (e.g. sent a request, but before getting the full response, it got closed / terminated / offline)
Questions:
- Are the above assumptions correct (#1 and #2)?
- Can this be diffrentiated from the situation: «could not write to the client, due to a network error on the server side»? or would that render the same error message?
- And most important: Is there an official document (e.g from Sun) stating the above?
I need to have a proof that this stack trace is the socket client’s «fault», and there is nothing that the server could have done to avoid it. (except catching the exception, or using a non Sun JVM SocketOutputStream, though both don’t really avoid the fact the client has terminated)