DnsClient TCP socket timeout

[Chris Hegarty]

Milan,

You could be right, I’d need to look into the code a little more. It was
not clear to me, from either your post or SO, that the issue only
occurs when falling back to TCP.

-Chris.

> On 18 Jul 2019, at 10:35, Milan Mimica <milan.mimica at gmail.com> wrote:
> 
> Stack trace for reference:
>   java.net.SocketInputStream.socketRead0 line: not available [native method]
>   java.net.SocketInputStream.read line: 150
>   java.net.SocketInputStream.read line: 121
>   java.io.BufferedInputStream.fill line: 246
>   java.io.BufferedInputStream.read line: 265
>   com.sun.jndi.dns.DnsClient.continueTcpQuery line: 455
>   com.sun.jndi.dns.DnsClient.doTcpQuery line: 443
>   com.sun.jndi.dns.DnsClient.query line: 245
>   com.sun.jndi.dns.Resolver.query line: 81
>   com.sun.jndi.dns.DnsContext.c_getAttributes line: 434
>   com.sun.jndi.toolkit.ctx.ComponentDirContext.p_getAttributes line: 235
>   com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.getAttributes line: 141
>   com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.getAttributes line: 129
>   javax.naming.directory.InitialDirContext.getAttributes line: 142
> 
> On Thu, 18 Jul 2019 at 11:32, Milan Mimica <milan.mimica at gmail.com> wrote:
>> 
>> On Thu, 18 Jul 2019 at 11:23, Chris Hegarty <chris.hegarty at oracle.com> wrote:
>>>> Have you ever considered the problem reported here:
>>>> https://stackoverflow.com/questions/14603553/dns-query-freezes-with-dnscontextfactory-in-java
>>> 
>>> I posted a comment on that SO thread yesterday, no reply since.
>> 
>> Hi Chris
>> 
>> This exception must have been thrown from
>> DatagramSocket::receive(DatagramPacket p), not from TCP socket. So it
>> does not cover the case when TCP socket gets stuck, in the fallback
>> flow for truncated UDP responses.
>> 
>> 
>> --
>> Milan Mimica
> 
> 
> 
> -- 
> Milan Mimica