libvirt users - Feb 2012 - the probelm in using libvirt to connect esx server

hi,
 I am a new user of libvirt ,i really appreciate libvirt?and want to use it in
my work.I want to use it to conncet to a ESXi server.when I try to connect to
the server ,I use the command :virsh -c esx://name at exmaple.com,And I get an
  
 1.error :error: internal error curl_easy_perform() returned an error:
Couldn't connect to server (7) : couldn't connect to host
  so I think maybe the firewall shutdown the 443 for https,so I used
command:virsh -c esx://name at example.com/?transport=http And I still get an
error like:
 error: internal error HTTP response code 417 for call to
'RetrieveServiceContent'
error: failed to connect to the hypervisor
 so ,I still can't find the way to connet the server,if you kown how to
handle this problem  ,i hope you can help me thanks a lot.  i will wait for you
letter day and night.
Best regards
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2012/2/20 ??? <453193368 at qq.com>:
> hi,
> I am a new user of libvirt ,i really appreciate libvirt?and want to use it
> in my work.I want to use it to conncet to a ESXi server.when I try to
> connect to the server ,I use the command :virsh -c
> esx://name at exmaple.com,And I get an
>
> 1.error :error: internal error curl_easy_perform() returned an error:
> Couldn't connect to server (7) : couldn't connect to host
> ?so I think maybe the firewall shutdown the 443 for https,so I used
> command:virsh -c esx://name at example.com/?transport=http And I still get
an
> error like:
> error: internal error HTTP response code 417 for call to
> 'RetrieveServiceContent'
> error: failed to connect to the hypervisor
HTTP error code 417 is related to the Expect header. The error
indicates that the server or a proxy in between doesn't handle the
Expect header. I assume that the ESXi sever itself is not the problem,
because it works for me here. Maybe there is a HTTP proxy between your
computer and the ESXi server that returns this 417 error code.

This problem is probably related to libvirt sending a dummy Expect
header instead of sending no Expect at all.

If you're building libvirt from source you can try this patch that I
just send to the mailing list for review

https://www.redhat.com/archives/libvir-list/2012-February/msg00860.html

It fixes the Expect header problem and might fix your connection problem.

-- 
Matthias Bolte
http://photron.blogspot.com