I wanna posted it but I must before that have more than 5 posts :'(
I tested my library in a simple console project and it's work verry well. This library use an other dll file to export historical data from an other plateform.

Hello;

I want to work with a DLL file to export historical data from an other trading plateform. But I have the error message: "Unhandled exception: unable to read beyond the end of stream".



This is a part of code:

Quoting 

protected override void OnStateChange() { if (State == State.SetDefaults) { ....... } else if (State == State.Configure) { string connectionString = "Server=PCAM1;Database=NinjaTrader_ExportHistoricalData;User Id=sa;Password = n2Ls5kiKojV3839S37rT; "; export = new ExportHD(connectionString); Log("_____________---------------State = State.Configure---------------_____________", LogLevel.Information); } } tected override void OnBarUpdate() { export.connect("127.0.0.1", 7496, 0); try { export.exportHistoricalData(1, symbolDetails, EndDateTime, Duration, BarSizeSetting, WhatToShow, UserRTH, 1); } catch (Exception e) { Log("_____________---------------Exception message = " + e.Message + "---------------_____________", LogLevel.Information); } finally { export.disconnect(); } }

I wish if you can help me to resolve that

laadari 

Hello; I want to work with a DLL file to export historical data from an other trading plateform. But I have the error message: "Unhandled exception: unable to read beyond the end of stream". This is a part of code: I wish if you can help me to resolve that

I think this has more to do with a problem in the DLL itself, do you have the source code of that DLL ?
are you able to make it work correctly outside NT ?

rleplae 

I think this has more to do with a problem in the DLL itself, do you have the source code of that DLL ? are you able to make it work correctly outside NT ?

Yes of caurse, I tested it in a console project and it's work as I wish. The DLL file doesn't have any problem.

laadari 

Yes of caurse, I tested it and it's work as I wish. The DLL file doesn't have any problem.

Looks like inside the DLL you are trying to do some TCP/IP socket connection
and that fails, the exception is not properly caught

put

try
{
}
catch
{
}

in your code, inside the DLL, where you try to do things that you are not sure will work
like making a connection to something or reading a file

the stream should give you some clue...

rleplae 

Looks like inside the DLL you are trying to do some TCP/IP socket connection and that fails, the exception is not properly caught put try { } catch { } in your code, inside the DLL, where you try to do things that you are not sure will work like making a connection to something or reading a file the stream should give you some clue...

Thinks, I will tested it after.
I have also an ofher problem

Quoting 

Error on calling "OnbarUpdate" method on bar X: Object reference not set to an instance of an object

rleplae 

Looks like inside the DLL you are trying to do some TCP/IP socket connection and that fails, the exception is not properly caught put try { } catch { } in your code, inside the DLL, where you try to do things that you are not sure will work like making a connection to something or reading a file the stream should give you some clue...

I added the bloc try {} catch() {} but the error persiste

laadari 

I added the bloc try {} catch() {} but the error persiste

that means it does not wrap the code that generates the exception
sometimes you may be suprised where it comes from

I had the same Stream error message (on NT8) while importing years of market replay data from NT7 but that was from a custom file-system and I think the error was coming from there (the file-system was too slow to handle NT8 queries). So maybe that's not relevant.
In this case it's maybe a threading issue, adding a

 

Code

this.Dispatcher.InvokeAsync(() => {    blah blah blah;   } );

may help.

sam028 

I had the same Stream error message (on NT8) while importing years of market replay data from NT7 but that was from a custom file-system and I think the error was coming from there (the file-system was too slow to handle NT8 queries). So maybe that's not relevant. In this case it's maybe a threading issue, adding a   Code this.Dispatcher.InvokeAsync(() => {    blah blah blah;   } );  may help.

Think you Sam;

When I tried it, I get the error message:

Error message

Indicator "MyCustomIndicator": Error on calling "OnBarUpdate" method on bar X: Unable to read data from the transport connection: A blocking operation was interrupted by a call to WSACancelBlockingCall

And when I use "try catch", I get:

Error message

Indicator "MyCustomIndicator": Error on calling "OnBarUpdate" method on bar X: Object reference not set to an instance of an object.

I hope you have a solution to that.