Scope failure is not preventing application crush in case of uncaught exceptions

[james bennettt]

On Saturday, 16 December 2017 at 20:51:09 UTC, kerdemdemir wrote:
> While calling this function :
>
> bool PublicMarketCall( ref Json result )
> {
>   string fullUrl = 
> "https://www.delta.exchange/futures-guide-bitcoin";
>   Json data;
>   try
>   {
>   	requestHTTP(fullUrl,
>   		(scope req) {
>   			req.method = HTTPMethod.GET;
>   		},
>   		(scope res) {
>   			data = parseJsonString(res.bodyReader.readAllUTF8());	
>   		}
>   	);
>   }
>   catch ( std.json.JSONException e )
>   {
>   	writeln("Exception was caught while making the public call: 
> ", fullUrl);
>   	return false;
>   }
>
>   scope(failure)
>   	writeln("Exception was caught while public data: ", fullUrl);
>   return false;
> }
>
> Very rarely (I am calling this function thousands of times in a 
> day) like once in a day I am getting a crush while calling 
> requestHTTP function :
>
> object.Exception at ../../../.dub/packages/vibe-d-0.8.1/vibe-d/core/vibe/core/drivers/libevent2.d(375): Failed to connect to host 104.17.154.108:443: 7FF703F4F617
> ----------------
> ??:? [0x606cee]
> ??:? [0x60ceb2]
> exception.d:421 [0x4644a3]
> exception.d:388 [0x41396d]
> libevent2.d:375 [0x59002b]
> net.d:129 [0x5be726]
> client.d:610 [0x4a8ed4]
> client.d:528 [0x4a7224]
> client.d:462 [0x4a5a3f]
> client.d:157 [0x4a5819]
> client.d:133 [0x4a52bf]
> .... --> Some files belonging my function
> app.d:41 [0x43b947]
> ??:? [0x612f3e]
> ??:? [0x612efd]
> ??:? [0x612df8]
> __entrypoint.d:8 [0x43be54]
> ??:? __libc_start_main [0x3de282f]
> ??:? [0x406fb8]
> Program exited with code 1
>
> As far as I know scope(failure) should be collecting all 
> failure cases. And my application shouldn't crush with uncaught 
> exceptions. What I am missing?


Nothing i can think of