[Varnish] #1550: maximum url length for GET requests?

[Varnish]

#1550: maximum url length for GET requests?
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 Reporter:  rolafia                              |       Type:  defect
   Status:  new                                  |   Priority:  normal
Milestone:                                       |  Component:  varnishd
  Version:  3.0.2                                |   Severity:  normal
 Keywords:  url length, maximum length,          |
  configuration options                          |
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 Hello, since a few days we get a lot of 503 errors which have been traced
 back to the url length. we have a lot of parameters which extends the url
 to a length of over 8200 characters. Varnish will throw the 503 if the
 length is 8201. Is there any possibility or configuration to extend the
 url length? I know that a url of 8200 characters is very long but we use
 the varnish in our backend and there we need longer URLs. We can change
 the request from GET to POST, but this will be a bigger change. So the
 best option for us would be a config to change that setting.

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1550>
Varnish <https://varnish-cache.org/>
The Varnish HTTP Accelerator