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From "Tobias Oberlies (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HTTPCLIENT-1188) HTTP client does not monitor connection for error status while sending request body
Date Mon, 25 Apr 2016 15:04:12 GMT

    [ https://issues.apache.org/jira/browse/HTTPCLIENT-1188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15256448#comment-15256448
] 

Tobias Oberlies commented on HTTPCLIENT-1188:
---------------------------------------------

bq. If for whatever reason you cannot use the 'expect-continue' handshaking to avoid this
problem, ...

This is e.g. the case if the server is a Tomcat: see https://bz.apache.org/bugzilla/show_bug.cgi?id=57661


> HTTP client does not monitor connection for error status while sending request body
> -----------------------------------------------------------------------------------
>
>                 Key: HTTPCLIENT-1188
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1188
>             Project: HttpComponents HttpClient
>          Issue Type: Bug
>          Components: HttpClient
>    Affects Versions: 4.1.3
>            Reporter: Benjamin Bentmann
>
> Quoting from http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8.2.2:
> bq. An HTTP/1.1 (or later) client sending a message-body SHOULD monitor the network connection
for an error status while it is transmitting the request. If the client sees an error status,
it SHOULD immediately cease transmitting the body. If the body is being sent using a "chunked"
encoding (section 3.6), a zero length chunk and empty trailer MAY be used to prematurely mark
the end of the message. If the body was preceded by a Content-Length header, the client MUST
close the connection. 
> This is apparently not the case with the HttpClient. While uploading large files (tens
of MBs) whose transfer takes notable time (~ 30 sec) we observed the following exceptions
(the variation in detail msg are either due to Java version or OS):
> {noformat}
> java.net.SocketException: Broken pipe
>   at java.net.SocketOutputStream.socketWrite0(Native Method)
>   at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
>   at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
>   at com.sun.net.ssl.internal.ssl.OutputRecord.writeBuffer(OutputRecord.java:297)
>   at com.sun.net.ssl.internal.ssl.OutputRecord.write(OutputRecord.java:286)
>   at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRecordInternal(SSLSocketImpl.java:743)
>   at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:731)
>   at com.sun.net.ssl.internal.ssl.AppOutputStream.write(AppOutputStream.java:59)
>   at org.apache.http.impl.io.AbstractSessionOutputBuffer.write(AbstractSessionOutputBuffer.java:153)
>   at org.apache.http.impl.io.ContentLengthOutputStream.write(ContentLengthOutputStream.java:114)
>   at org.apache.http.entity.FileEntity.writeTo(FileEntity.java:75)
>   at org.apache.http.entity.HttpEntityWrapper.writeTo(HttpEntityWrapper.java:96)
>   at org.apache.http.impl.client.EntityEnclosingRequestWrapper$EntityWrapper.writeTo(EntityEnclosingRequestWrapper.java:108)
>   at org.apache.http.impl.entity.EntitySerializer.serialize(EntitySerializer.java:120)
>   at org.apache.http.impl.AbstractHttpClientConnection.sendRequestEntity(AbstractHttpClientConnection.java:264)
>   at org.apache.http.impl.conn.AbstractClientConnAdapter.sendRequestEntity(AbstractClientConnAdapter.java:224)
>   at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:255)
>   at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123)
>   at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:647)
>   at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:464)
>   at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
>   
> java.net.SocketException: Connection reset by peer: socket write error
>   at java.net.SocketOutputStream.socketWrite0(Native Method)
>   at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
>   at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
>   at com.sun.net.ssl.internal.ssl.OutputRecord.writeBuffer(OutputRecord.java:297)
>   at com.sun.net.ssl.internal.ssl.OutputRecord.write(OutputRecord.java:286)
>   at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRecordInternal(SSLSocketImpl.java:748)
>   at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:736)
>   at com.sun.net.ssl.internal.ssl.AppOutputStream.write(AppOutputStream.java:89)
>   at org.apache.http.impl.io.AbstractSessionOutputBuffer.write(AbstractSessionOutputBuffer.java:153)
>   at org.apache.http.impl.io.ContentLengthOutputStream.write(ContentLengthOutputStream.java:114)
>   at org.apache.http.entity.FileEntity.writeTo(FileEntity.java:75)
>   at org.apache.http.entity.HttpEntityWrapper.writeTo(HttpEntityWrapper.java:96)
>   at org.apache.http.impl.client.EntityEnclosingRequestWrapper$EntityWrapper.writeTo(EntityEnclosingRequestWrapper.java:108)
>   at org.apache.http.impl.entity.EntitySerializer.serialize(EntitySerializer.java:120)
>   at org.apache.http.impl.AbstractHttpClientConnection.sendRequestEntity(AbstractHttpClientConnection.java:264)
>   at org.apache.http.impl.conn.AbstractClientConnAdapter.sendRequestEntity(AbstractClientConnAdapter.java:224)
>   at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:255)
>   at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123)
>   at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:647)
>   at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:464)
>   at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
> {noformat}
> The cause for those is apparently that the server sends an error response before fully
consuming the request body sent by the client. The server eventually closes the TCP connection
(after having notified the client via FIN and RST) but the client continues to upload and
runs into the closed server side.



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