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https://issues.apache.org/jira/browse/HTTPCORE-626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17235727#comment-17235727
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ASF subversion and git services commented on HTTPCORE-626:
----------------------------------------------------------
Commit d1ddbdf0d7330f57f45c97d4dd28d821f7ff5cd4 in httpcomponents-core's branch
refs/heads/5.0.x from Oleg Kalnichevski
[ https://gitbox.apache.org/repos/asf?p=httpcomponents-core.git;h=d1ddbdf ]
HTTPCORE-626: in case of an unsuccessful `expect-continue` handshake do not
make any attempts to keep the client connection in a consistent state if the
server intends to close it on its end
> Don't send request body for "Expect: 100-continue" when servers closes
> connection on non-2xx status code
> --------------------------------------------------------------------------------------------------------
>
> Key: HTTPCORE-626
> URL: https://issues.apache.org/jira/browse/HTTPCORE-626
> Project: HttpComponents HttpCore
> Issue Type: Improvement
> Components: HttpCore
> Affects Versions: 5.0
> Reporter: Michael Osipov
> Priority: Major
> Fix For: 5.0.3, 5.1-beta2
>
>
> Based on the discussion in
> [this|https://www.mail-archive.com/httpclient-users@hc.apache.org/msg09851.html]
> thread. The expect handling was been changed in a way that it turns out to
> be pointless. Roy Fielding commented that a server can close a connection on
> a non-2xx status and the client does not need to send the request body in
> this case.
> In the spirit of this, we shall close the connection immediately w/o sending
> the request body. It shall only be send if the server does not request to
> close the connection.
> The client can close the connection itself if a non-2xx status has been
> received and it wishes not to send the request body. Otherwise one must
> completely the request for the server connection to continue function
> properly.
> This likely only applies when a {{Content-Length}} header has been supplied.
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