Why Does My Java Application Throw a `java.net.SocketException: Connection Reset` Error?

What causes java.net.SocketException: Connection reset?

This exception is thrown when there's an error in the underlying protocol, such as a TCP error. In this case, it seems that the connection has been closed by the server end of the connection.

What are the typical causes of this exception?

The typical causes of this exception are:

• Issues with the request: The request being sent might not be valid or might not be supported by the server.
• Issues at the server end: The server might be experiencing issues that are causing the connection to be reset.

How can the issue be debugged?

To debug the issue, the following steps can be taken:

• Use a tool like Wireshark: Wireshark can be used to view the actual network packets and can help in identifying the cause of the issue.
• Use an alternative client: If there's an alternative client that can be used to test the web service, it can be helpful to see if the issue is specific to the Java code.
• Log the request at the HTTP level: The Commons HTTP Client Logging Guide can be used to log the request at the HTTP level and can help in identifying the cause of the issue.

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