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https://issues.apache.org/jira/browse/HTTPCLIENT-1795?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16157863#comment-16157863
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Mike Hagan commented on HTTPCLIENT-1795:
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Hi [~garydgregory],
The documentation states that the httpclient supports the quote character as
specified in RFC6874 but in fact it doesn't. The trouble is the lower layers
used by httpclient does not support it. These layers are generic used by many
other commands where the quote is not required. My fix strips the quote so the
lower layers can be used.
Hi [~flyingfischer],
I will look into this.
I appreciate the comments and feedback.
[~mhagan]
> Http Client does not support RFC-compliant quoted IPv6 Link-Local host
> literals
> -------------------------------------------------------------------------------
>
> Key: HTTPCLIENT-1795
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1795
> Project: HttpComponents HttpClient
> Issue Type: Bug
> Components: HttpClient (async)
> Affects Versions: 4.5.2
> Reporter: Andreas Wundsam
> Labels: stuck, volunteers-wanted
> Fix For: Stuck
>
>
> [RFC 6874|https://tools.ietf.org/html/rfc6874] states that, when constructing
> a URL with an LLv6 literal, the {{%}} sign that prefixes the ZoneID must be
> quoted as {{%25}}. E.g., the LLv6 address
> {{fe80::221:b7ff:fe8a:57d5%en4}} should be specified as
> {{scheme://[fe80::221:b7ff:fe8a:57d5%25en4]/...}} in a URL.
> httpclient does not seem to support quoted host literals:
> Example:
> {code}
> Request.Get("http://[fe80::221:b7ff:fe8a:57d5%25en4]/";)
> .connectTimeout(1000)
> .socketTimeout(1000)
> .execute().returnContent().asString();
> {code}
> results in
> {noformat}
> java.net.UnknownHostException: no such interface 25en4
> at java.net.Inet6Address.initstr(Inet6Address.java:487)
> at java.net.Inet6Address.<init>(Inet6Address.java:408)
> at java.net.InetAddress.getAllByName(InetAddress.java:1181)
> at java.net.InetAddress.getAllByName(InetAddress.java:1126)
> at
> org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:45)
> at
> org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:111)
> at
> org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:353)
> at
> org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:380)
> at
> org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)
> at
> org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:184)
> at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:88)
> at
> org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
> at
> org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
> at
> org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
> at
> org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:55)
> at
> org.apache.http.client.fluent.Request.internalExecute(Request.java:173)
> at org.apache.http.client.fluent.Request.execute(Request.java:177)
> at Test.name(Test.java:12)
> [...]
> {noformat}
> It appears that httpclient directly passes the host literal
> {{[fe80::221:b7ff:fe8a:57d5%25en4]}} to the Java standard method
> {{InetAddress.getAllByName(host)}}, which does not support the URL quoting
> that RFC 6874 prescribes.
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