# Es server connect to client，than throw connect timeout

**URL:** <https://discuss.elastic.co/t/es-server-connect-to-client-than-throw-connect-timeout/116627>\
**Category:** Elasticsearch\
**Created:** [January 23, 2018, 9:36am UTC](https://discuss.elastic.co/t/es-server-connect-to-client-than-throw-connect-timeout/116627 "2018-01-23T09:36:51Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![fightingaman](https://avatars.discourse-cdn.com/v4/letter/f/f07891/32.png) [@fightingaman](https://discuss.elastic.co/u/fightingaman)\
**Post date:** [January 23, 2018, 9:36am UTC](https://discuss.elastic.co/t/es-server-connect-to-client-than-throw-connect-timeout/116627/1 "2018-01-23T09:36:51Z")

</div>

Hi,  
I have some doubts.  
problem: I use es-rest client api，than the es-server throw connect timeout. It could be this. I can't imagine why es-server connect to client?

Thanks.

```auto
[2018-01-18T05:11:15,107][WARN][o.e.h.n.Netty4HttpServerTransport] [nodeMaster] caught exception while handling client http traffic, closing connection [id: 0xd66d089f, L:/XXXX:9200 - R:/XXXX:37333]
java.io.IOException: connect time out
	at sun.nio.ch.FileDispatcherImpl.read0(Native Method) ~[?:?]
	at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39) ~[?:?]
	at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) ~[?:?]
	at sun.nio.ch.IOUtil.read(IOUtil.java:197) ~[?:?]
	at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) ~[?:?]
	at io.netty.buffer.PooledHeapByteBuf.setBytes(PooledHeapByteBuf.java:261) ~[netty-buffer-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1100) ~[netty-buffer-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:366) ~[netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:118) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:642) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:527) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:481) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:441) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) [netty-common-4.1.7.Final.jar:4.1.7.Final]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_111]

```

---

<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [January 23, 2018, 9:49am UTC](https://discuss.elastic.co/t/es-server-connect-to-client-than-throw-connect-timeout/116627/2 "2018-01-23T09:49:40Z")

</div>

Please format your code using `</>` icon as explained in [this guide](https://discuss.elastic.co/t/about-the-elasticsearch-category/21) and not the citation button. It will make your post more readable.

Or use markdown style like:

````
```
CODE
```

````

Please edit your post.

Can you share the logs of your elasticsearch server please?

---

<div class="post-metadata">

**Author:** ![fightingaman](https://avatars.discourse-cdn.com/v4/letter/f/f07891/32.png) [@fightingaman](https://discuss.elastic.co/u/fightingaman)\
**Post date:** [January 23, 2018, 11:08am UTC](https://discuss.elastic.co/t/es-server-connect-to-client-than-throw-connect-timeout/116627/3 "2018-01-23T11:08:04Z")

</div>

thanks for your reply.  
'连接超时' mean connect timeout.

```auto
[2018-01-18T03:11:15,228][WARN][o.e.h.n.Netty4HttpServerTransport] [nodeMaster] caught exception while handling client http traffic, closing connection [id: 0xd84da933, L:/x.x.x.x:9200 - R:/x.x.x.x:57567]
java.io.IOException: 连接超时
	at sun.nio.ch.FileDispatcherImpl.read0(Native Method) ~[?:?]
	at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39) ~[?:?]
	at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) ~[?:?]
	at sun.nio.ch.IOUtil.read(IOUtil.java:197) ~[?:?]
	at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) ~[?:?]
	at io.netty.buffer.PooledHeapByteBuf.setBytes(PooledHeapByteBuf.java:261) ~[netty-buffer-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1100) ~[netty-buffer-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:366) ~[netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:118) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:642) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:527) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:481) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:441) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) [netty-common-4.1.7.Final.jar:4.1.7.Final]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_111]
[2018-01-18T05:11:15,107][WARN][o.e.h.n.Netty4HttpServerTransport] [nodeMaster] caught exception while handling client http traffic, closing connection [id: 0xd66d089f, L:/x.x.x.x:9200 - R:/x.x.x.x:37333]
java.io.IOException: 连接超时
	at sun.nio.ch.FileDispatcherImpl.read0(Native Method) ~[?:?]
	at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39) ~[?:?]
	at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) ~[?:?]
	at sun.nio.ch.IOUtil.read(IOUtil.java:197) ~[?:?]
	at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) ~[?:?]
	at io.netty.buffer.PooledHeapByteBuf.setBytes(PooledHeapByteBuf.java:261) ~[netty-buffer-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1100) ~[netty-buffer-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:366) ~[netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:118) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:642) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:527) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:481) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:441) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) [netty-common-4.1.7.Final.jar:4.1.7.Final]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_111]
[2018-01-18T07:11:15,134][WARN][o.e.h.n.Netty4HttpServerTransport] [nodeMaster] caught exception while handling client http traffic, closing connection [id: 0x30aeee09, L:/x.x.x.x:9200 - R:/x.x.x.x:44273]
java.io.IOException: 连接超时
	at sun.nio.ch.FileDispatcherImpl.read0(Native Method) ~[?:?]
	at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39) ~[?:?]
	at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) ~[?:?]
	at sun.nio.ch.IOUtil.read(IOUtil.java:197) ~[?:?]
	at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) ~[?:?]
	at io.netty.buffer.PooledHeapByteBuf.setBytes(PooledHeapByteBuf.java:261) ~[netty-buffer-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1100) ~[netty-buffer-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:366) ~[netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:118) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:642) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:527) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:481) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:441) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) [netty-common-4.1.7.Final.jar:4.1.7.Final]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_111]
[2018-01-18T09:11:15,291][WARN][o.e.h.n.Netty4HttpServerTransport] [nodeMaster] caught exception while handling client http traffic, closing connection [id: 0x981744bd, L:/x.x.x.x:9200 - R:/x.x.x.x:52327]
java.io.IOException: 连接超时
	at sun.nio.ch.FileDispatcherImpl.read0(Native Method) ~[?:?]
	at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39) ~[?:?]
	at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) ~[?:?]
	at sun.nio.ch.IOUtil.read(IOUtil.java:197) ~[?:?]
	at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) ~[?:?]
	at io.netty.buffer.PooledHeapByteBuf.setBytes(PooledHeapByteBuf.java:261) ~[netty-buffer-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1100) ~[netty-buffer-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:366) ~[netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:118) [netty-transport-4.1.7.Final.jar:4.1.7.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:642) [netty-transport-4.1.7.Final.jar:4.1.7.Final]

```

---

<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [January 23, 2018, 11:49am UTC](https://discuss.elastic.co/t/es-server-connect-to-client-than-throw-connect-timeout/116627/4 "2018-01-23T11:49:10Z")

</div>

Can you share the beginning of the logs, when elasticsearch starts and also paste the Java code you are using?

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [February 20, 2018, 11:58am UTC](https://discuss.elastic.co/t/es-server-connect-to-client-than-throw-connect-timeout/116627/5 "2018-02-20T11:58:33Z")

</div>

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