Open links in new tab
  1. 123

    This error occurs when a TCP connection is unexpectedly closed, often due to the remote endpoint sending a TCP RST packet. It typically means the connection was terminated before the expected data exchange completed.

    Example:

    Socket socket = new Socket("localhost", 6666);
    PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
    out.write("Hello");
    BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
    System.out.println(in.readLine()); // May throw java.net.SocketException: Connection reset
    Copied!

    A common cause is that the server closed the connection before sending a response, possibly due to application logic, timeouts, or network issues.

    To diagnose, first confirm if the server is running and reachable on the correct port. Use tools like telnet or nc to verify connectivity. Check server logs for errors or restarts during the request window. If using HTTP clients, enable detailed logging to inspect request/response flow.

    If this happens intermittently under load, it may be due to server thread pool exhaustion or connection throttling. Increasing thread pool sizes or tuning keep-alive settings can help. For example, in GlassFish, adjusting http-thread-pool max size from 5 to 32 has resolved similar issues.

    What does socketexception reset mean?
    The SocketException: Connection reset means that the connection you were trying to establish was unexpectedly closed by the remote host. This usually occurs during network communications, particularly when performing operations like sending or receiving data across the internet.
    techbloat.com
    Delft Stack
    https://www.delftstack.com/howto/java/java-net-socketexception
    How to Fix the Java.Net.SocketException: Connection Reset in Java
  1. Including results for Java.net socketexception Connection Reset.
    Do you want results only for Java.netsocketexception Connection Reset?
  2. Stack Overflow
    https://stackoverflow.com › questions

    What's causing my java.net.SocketException: Connection reset?

    Feb 25, 2009 · We are seeing frequent but intermittent java.net.SocketException: Connection reset errors in our logs. We are unsure as to where the Connection reset error is actually coming from, and how to …

    • Reviews: 2
      Usage example
      java.net.SocketException reset by peer
      Java: Clearing up the confusion on what causes a connection resetMay 3, 2010
      java.net.SocketException: Connection resetSep 14, 2008
      See more results
    • Delft Stack
      https://www.delftstack.com › howto › java › java-net-sockete…

      How to Fix the Java.Net.SocketException: Connection …

      Feb 2, 2024 · java.net.SocketException: Connection reset is thrown on the server when the client terminates the connection to the socket before the response can …

    • javathinking.com
      https://www.javathinking.com › ... › java-net-socketexception-connection-reset

      java.net.SocketException: Connection reset on Server: Why Client Logs ...

      Jan 16, 2026 · In this blog, we’ll demystify the Connection reset error from the server’s perspective. We’ll explore why clients perceive the server as the culprit, break down the root causes of the error, and …

    • codingtechroom.com
      https://codingtechroom.com › question › -java-net-socketexception...

      How to Troubleshoot and Resolve java.net.SocketException: …

      Learn how to fix java.net.SocketException: Connection reset error with detailed steps, causes, solutions, and code snippets.

    • Net-Informations.Com
      https://net-informations.com › java › err › reset.htm

      How to resolve java.net.SocketException: Connection reset

      When encountering a java.net.SocketException: Connection reset error in Java, it usually indicates that the remote side (client or server) has closed the TCP …

    • sqlpey.com
      https://sqlpey.com › java › resolving-socketexception-connection-reset

      Resolving java.net.SocketException Connection Reset: Causes …

      Nov 4, 2025 · Explore diverse reasons for java.net.SocketException connection reset, from stale connections and server misconfigurations to protocol mismatches and request size limits, with …

    • People also ask
      Unable to load answer

      Feedback
    • TechBloat
      https://www.techbloat.com › how-to-fix-internal-exception-java-net...

      How to Fix Internal Exception java.net.SocketException Connection …

      Jan 21, 2025 · One common issue that has perplexed developers is the “Internal Exception java.net.SocketException: Connection reset” error. This article delves into what this error means, its …

    • javaspring.net
      https://www.javaspring.net › blog › java-socket-exception-connection-reset

      Understanding and Handling Java Socket Exception: Connection Reset

      Jan 16, 2026 · When a Java application encounters a connection reset, it throws a java.net.SocketException with the message "Connection reset". This exception indicates that the …

    • W3docs
      https://www.w3docs.com › ... › java-net-socketexception-connection-reset.ht…

      java.net.SocketException: Connection reset - W3docs

      Here are a few things you can try to troubleshoot this issue: Check if the remote host is up and running. Check if there are any network issues that might be causing the connection to be reset. Check the …

    • GeeksForGeeks
      https://www.geeksforgeeks.org › java › java-net-socketexcep…

      java.net.SocketException in Java with Examples

      Jul 23, 2025 · java.net.SocketException: Connection reset This SocketException occurs on the server-side when the client closed the socket connection before the …

    • Including results for Java.net socketexception Connection Reset.
      Do you want results only for Java.netsocketexception Connection Reset?
    Content was generated with AI. Learn more