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https://issues.apache.org/jira/browse/HTTPCORE-270?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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William R. Speirs updated HTTPCORE-270:
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Attachment: (was: SocketOutputBuffer.diff)
> IllegalStateException in AbstractSessionOutputBuffer
> ----------------------------------------------------
>
> Key: HTTPCORE-270
> URL: https://issues.apache.org/jira/browse/HTTPCORE-270
> Project: HttpComponents HttpCore
> Issue Type: Bug
> Components: HttpCore
> Affects Versions: 4.2-alpha1
> Reporter: William R. Speirs
> Priority: Critical
> Fix For: 4.2-alpha2
>
> Attachments: SocketOutputBuffer.diff
>
>
> I am using httpclient-4.1.2 & httpcore-4.2-alpha1. In making an
> DefaultHttpClient.execute() call I get the following exception:
> java.lang.IllegalStateException: Current state = RESET, new state = FLUSHED
> at
> java.nio.charset.CharsetEncoder.throwIllegalStateException(CharsetEncoder.java:951)
> at java.nio.charset.CharsetEncoder.flush(CharsetEncoder.java:640)
> at
> org.apache.http.impl.io.AbstractSessionOutputBuffer.writeEncoded(AbstractSessionOutputBuffer.java:264)
> at
> org.apache.http.impl.io.AbstractSessionOutputBuffer.writeLine(AbstractSessionOutputBuffer.java:247)
> at
> org.apache.http.impl.conn.LoggingSessionOutputBuffer.writeLine(LoggingSessionOutputBuffer.java:99)
> at
> org.apache.http.impl.io.AbstractMessageWriter.write(AbstractMessageWriter.java:97)
> at
> org.apache.http.impl.AbstractHttpClientConnection.sendRequestHeader(AbstractHttpClientConnection.java:253)
> On line 264 of AbstractSessionOutputBuffer.java, encoder.flush() is being
> called. My thought (I have not completely debugged) is that in this instance,
> cbuf.hasRemaining() is false, and therefor the following calls are being made:
> encoder.reset()
> encoder.flush()
> This is resulting in the above exception.
> I believe the following small patch will short-circuit the code, and fix the
> issue.
> Thoughts?
> Index:
> httpcore/src/main/java/org/apache/http/impl/io/AbstractSessionOutputBuffer.java
> ===================================================================
> ---
> httpcore/src/main/java/org/apache/http/impl/io/AbstractSessionOutputBuffer.java
> (revision 1160689)
> +++
> httpcore/src/main/java/org/apache/http/impl/io/AbstractSessionOutputBuffer.java
> (working copy)
> @@ -256,6 +256,10 @@
> if (this.bbuf == null) {
> this.bbuf = ByteBuffer.allocate(1024);
> }
> + if(!cbuf.hasRemaining()) {
> + return;
> + }
> +
> this.encoder.reset();
> while (cbuf.hasRemaining()) {
> CoderResult result = this.encoder.encode(cbuf, this.bbuf, true);
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