Ping from AppEngine
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"ping" like in ICMP or "ping", because when you send an HTTP request without getting a full response? If the latter, just send a HEAD request instead of GET.
If the former, then it probably depends on your language of choice on the AppEngine
- For python, check out Ping site in Python?
- For java select http://blog.taragana.com/index.php/archive/how-to-do-icmp-ping-in-java-jdk-15-and-above/
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There is a whitelist of modules and a FAQ about notable exceptions . You cannot do this; use WHALY HEAD query.
It is also possible that ICMP cannot connect to web pages and the ICMP pingable website to do nothing but reply to messages.
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