Is the endpoint you're trying to reach https perhaps? If so:

$client->getUseragent()->proxy(['http','https'], 
 'http://proxy.example.com:8888/');

[download]

In reply to Re: Rest::Client unable to access the proxy but curl command able to access the proxy by kschwab
in thread Rest::Client unable to access the proxy but curl command able to access the proxy by chandantul

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