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https://issues.apache.org/jira/browse/HTTPCORE-112?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12531291
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Roland Weber commented on HTTPCORE-112:
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Hi Andrea,
unfortunately, it is not that simple. RFC 2616, section 4.2 says:
Multiple message-header fields with the same field-name MAY be
present in a message if and only if the entire field-value for that
header field is defined as a comma-separated list [i.e., #(values)].
It MUST be possible to combine the multiple header fields into one
"field-name: field-value" pair, without changing the semantics of the
message,...
So all these examples are semantically equivalent:
a)
Connection: proxy-connection
Connection: close
Connection: keep-alive
b)
Connection: proxy-connection, close, keep-alive
c)
Connection: proxy-connection
Connection: close, keep-alive
d)
Connection: proxy-connection, close
Connection: keep-alive
This is a common problem with other comma-separated headers, too. That's why I
am wondering whether we should have a TokenIterator of some sort that scans all
headers of a given name for comma-separated tokens. At least plain tokens as
defined in RFC 2616, section 2.2 don't require quote and escape handling. That
would get really nasty.
cheers,
Roland
> DefaultConnectionReuseStrategy misinterprets Connection header
> --------------------------------------------------------------
>
> Key: HTTPCORE-112
> URL: https://issues.apache.org/jira/browse/HTTPCORE-112
> Project: HttpComponents Core
> Issue Type: Bug
> Components: HttpCore
> Affects Versions: 4.0-alpha5
> Reporter: Roland Weber
> Priority: Minor
> Fix For: 4.0-beta1
>
> Attachments: multiuconn.patch
>
>
> DefaultConnectionReuseStrategy assumes that "Connection:" is a single-valued
> header.
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