Why Am I Getting a 'java.net.SocketException: Connection Reset' Error on My Server?

"java.net.SocketException: Connection reset" Problem

When attempting to read from a socket, users may encounter the error "java.net.SocketException: Connection reset." This typically occurs due to the client abruptly closing the connection, leaving the server with an active socket connection. However, in the given scenario, the server persistently experiences this error, suggesting an alternative cause.

Causes and Solutions

• Client Connection Reset:

  • Verify that the client is not deliberately or accidentally closing the connection prematurely.

• Application Protocol Error:

  • Ensure that both the client and server adhere to the established application protocol. Avoid writing to a closed connection or closing a socket with pending data.

• Unread Data in Socket Buffer:

  • When closing a socket, be sure to consume all pending data in its receive buffer to prevent a "Connection reset" error.

• Windows Software Issue (Windows Only):

  • Refer to Microsoft's knowledge base for specific details on "software caused connection abort," a Windows-specific issue involving network transmission problems.

• Process Termination Without Socket Closure (Windows Only):

  • Unlike Unix and Linux, Windows does not automatically close sockets when a process terminates abnormally, which can lead to "Connection reset" errors. Ensure proper socket closure before process termination.

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