java.net.SocketException: Connection reset on Selenium driver.close() or driver.quit() statements

Question

I am seeing a java.net.SocketException: Connection reset almost every time I use a driver.close() or driver.quit() statement. The browser does get closed and the exception isn't affecting any of my tests so far, but I would still like to understand why this is happening.

I checked for a version incompatibility, but the issue persists even after I updated my ChromeDriver. (I'm using ChromeDriver 84.0.4147.30 with Google Chrome Version 84.0.4147.105.)

The issue is intermittent, but usually occurs about 80% of the time.

Code:

public static void main(String[] args) {
        System.setProperty("webdriver.chrome.driver","/chromedriver.exe");
        WebDriver driver = new ChromeDriver();
        driver.get("https://www.google.com/");
        driver.close();
        System.exit(0);
    }

Error:

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Starting ChromeDriver 84.0.4147.30 (48b3e868b4cc0aa7e8149519690b6f6949e110a8-refs/branch-heads/4147@{#310}) on port 24445
Only local connections are allowed.
Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
ChromeDriver was started successfully.
Aug 07, 2020 6:39:11 PM org.openqa.selenium.remote.ProtocolHandshake createSession
INFO: Detected dialect: W3C
Aug 07, 2020 6:39:14 PM org.openqa.selenium.remote.http.WebSocket$Listener onError
WARNING: Connection reset
java.net.SocketException: Connection reset
    at java.base/sun.nio.ch.SocketChannelImpl.throwConnectionReset(SocketChannelImpl.java:345)
    at java.base/sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:376)
    at io.netty.buffer.PooledByteBuf.setBytes(PooledByteBuf.java:253)
    at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1133)
    at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:350)
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:148)
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:714)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:650)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:576)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
    at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
    at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
    at java.base/java.lang.Thread.run(Thread.java:832)


Process finished with exit code 0

Ankit Agrawal Ankit Agrawal · Accepted Answer · 2020-08-07T18:26:22

AS the name of exception suggest, there is issue in connection between your chromedriver and chrome browser.

Upgrade chrome browser to 84 and then retry or you can also download downgraded version of chromedriver which is compatible with your version of chrome.

java.net.SocketException: Connection reset on Selenium driver.close() or driver.quit() statements

1 Answers