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I am testing the timeout handling for an outbound CURL in a PHP app I am developing after an outage at an affiliate brought down my site. I am looking for a way to intentionally slowdown or permanently stall outbound connections to a specific IP address so I can tune my timeout schema. Is there any way to do this?

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migrated from stackoverflow.com Jul 14 '11 at 2:00

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3 Answers 3

The Charles proxy server can do connection throttling, e.g. artificially increasing the latency or limiting the bandwidth. Install it and use the cURL CURLOPT_PROXY option to point PHP to the proxy server.

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To completely block traffic you could do an iptables drop command for the outbound traffic to that dst address.

ie

iptables -A OUTPUT --dst 129.232.64.145 -j DROP
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The linux traffic shaper, although normally used to enforce QoS, is also perfect to degrade connections arbitrarily.

http://lartc.org

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