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Date: Thu, 8 Dec 2016 18:16:58 +0000 (UTC)
From: "Andreas Wundsam (JIRA)" <jira@apache.org>
To: dev@hc.apache.org
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Subject: [jira] [Created] (HTTPCLIENT-1795) Http Client does not support
 RFC-compliant quoted IPv6 Link-Local host literals
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archived-at: Thu, 08 Dec 2016 18:17:00 -0000

Andreas Wundsam created HTTPCLIENT-1795:
-------------------------------------------

             Summary: 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


[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}}. (Formally, this is specified in ).

httpclient does not seem to supported version.

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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