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Re: Backfilling data after a disconnect [Re: Zheka] #471879
03/22/18 12:31
03/22/18 12:31
Joined: Jul 2000
Posts: 27,967
Frankfurt
jcl Offline

Chief Engineer
jcl  Offline

Chief Engineer

Joined: Jul 2000
Posts: 27,967
Frankfurt
Thanks, but none of your links is a usable connection status flag or similar function. But if you still find one, please post it here. I know that it is difficult.

FXCM does not detect interruptions, only logouts or server outages on their side. The LastErrorCode by MT4 can return ERR_NO_CONNECTION when sending an order. But it's no good idea to send orders for testing the connection status.


Re: Backfilling data after a disconnect [Re: jcl] #471882
03/22/18 13:35
03/22/18 13:35
Joined: Jul 2017
Posts: 783
Z
Zheka Offline OP
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Zheka  Offline OP
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Z

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Posts: 783
https://docs.mql4.com/check/isconnected

This seems to the flag for MT4.

LastError() code can also be used - to signal a relevant error.

Both MultiCharts and SierraChart use IB API error codes to determine the status of connection. SC then exposes this further to a user via a variable at run-time.

Re: Backfilling data after a disconnect [Re: Zheka] #472050
04/03/18 13:29
04/03/18 13:29
Joined: Jul 2017
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Zheka Offline OP
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Zheka  Offline OP
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JCL,

is there any update on this - for MT4 and IB?

Re: Backfilling data after a disconnect [Re: Zheka] #472051
04/03/18 13:47
04/03/18 13:47
Joined: Feb 2017
Posts: 1,699
Chicago
AndrewAMD Online
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AndrewAMD  Online
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Posts: 1,699
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Originally Posted By: Zheka
FIX/DTC use "heartbeats" to confirm that connection is "alive".
This would only confirm the connection between DTC client and DTC server and not necessarily the layer behind it (i.e. Sierra Chart's connection to its server).

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