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From "Feng Shaobao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (ZOOKEEPER-2949) SSL ServerName not set when using hostname, some proxies may failed to proxy the request.
Date Mon, 27 Nov 2017 03:28:00 GMT

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-2949?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Feng Shaobao updated ZOOKEEPER-2949:
------------------------------------
    Description: 
In our environment, the zk clusters are all behind a proxy, the proxy decide to transfer the
request from client based on the "ServerName" field in SSL Hello packet(the proxy served on
SSL only). but the Hello packets that zk client sended do proxy do not contain the "ServerName"
field in it. after inspect the codes, we have found that it is because that zk client did
not specify the peerHost when initializing the SSLContext.

In the method initSSL of class ZKClientPipelineFactory, it initialize the SSLEngine like below:

sslEngine = sslContext.createSSLEngine();

Actually the sslContext provide another factory method that receives the hostName and port
parameter.

public final SSLEngine createSSLEngine(String hostName, int port)

If we call this method to create the SSLEngine, then the proxy will know which zk cluster
it really want to access.

  was:
In the method initSSL of class ZKClientPipelineFactory, it initialize the SSLEngine like below:

sslEngine = sslContext.createSSLEngine();

Actually the sslContext provide another factory method that receives the hostName and port
parameter.

public final SSLEngine createSSLEngine(String hostName, int port)

If we call this method to create the SSLEngine, then the proxy will know which zk cluster
it really want to access.


> SSL ServerName not set when using hostname, some proxies may failed to proxy the request.
> -----------------------------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-2949
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2949
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: java client
>    Affects Versions: 3.5.3
>         Environment: In our environment, the zk clusters are all behind a proxy, the
proxy decide to transfer the request from client based on the "ServerName" field in SSL Hello
packet(the proxy served on SSL only). but the Hello packets that zk client sended do proxy
do not contain the "ServerName" field in it. after inspect the codes, we have found that it
is because that zk client did not specify the peerHost when initializing the SSLContext.
>            Reporter: Feng Shaobao
>             Fix For: 3.5.4
>
>   Original Estimate: 12h
>  Remaining Estimate: 12h
>
> In our environment, the zk clusters are all behind a proxy, the proxy decide to transfer
the request from client based on the "ServerName" field in SSL Hello packet(the proxy served
on SSL only). but the Hello packets that zk client sended do proxy do not contain the "ServerName"
field in it. after inspect the codes, we have found that it is because that zk client did
not specify the peerHost when initializing the SSLContext.
> In the method initSSL of class ZKClientPipelineFactory, it initialize the SSLEngine like
below:
> sslEngine = sslContext.createSSLEngine();
> Actually the sslContext provide another factory method that receives the hostName and
port parameter.
> public final SSLEngine createSSLEngine(String hostName, int port)
> If we call this method to create the SSLEngine, then the proxy will know which zk cluster
it really want to access.



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