Multiple token subscription issue

Bharat_Dhiman · December 18, 2023, 10:20am

I have been using CSharp sdk for Upstox API and trying to subscribe to multiple tokens( atleast 500 tokens). But when i am subscribing to multiple tokens in a single websocket request. i am getting a
protobuffer parsing error and when i am trying to subscribe to multiple tokens with multiple request(each request for each token), i got disconnected from websocket of upstox. Please help me.

Pradeep_Jaiswar · December 18, 2023, 11:21am

Please keep the max count at 100 instruments at a time. We are internally discussing increasing the max count with the concerned team. We will inform you once we make progress on it.

Bharat_Dhiman · December 19, 2023, 9:44am

var guid = Guid.NewGuid();

string subscribeMessage = “{"guid":"” + guid + “","method":"sub","data":{"mode":"full","instrumentKeys":["” + token + “"]}}”;

// Convert the string to binary using UTF-8 encoding
byte binaryData = Encoding.UTF8.GetBytes(subscribeMessage);

Task.Run(async () => await Send(binaryData));

Above is the code I have implemented to subscribe to tokens. Now could you please help me in which way i need to pass the tokens in above token variable. Below are the tokens i want to subscribe.

shanmu · December 19, 2023, 9:49am

@Bharat_Dhiman

Please note that the instrumentKeys field requires an array of strings. When subscribing for updates, ensure to pass the necessary tokens as an array to this field.

Thank you!

Bharat_Dhiman · December 19, 2023, 2:08pm

Could you please place the above tokens to the below statement.

string subscribeMessage = “{“guid”:“” + guid + “”,“method”:“sub”,“data”:{“mode”:“full”,“instrumentKeys”:[“” + *** array of tokens*** + “”]}}”;

Because i tried many way to sort this out but not able to do so. If you could help me in placing the tokens in a right way then it might be helpful for me.

shanmu · December 20, 2023, 4:52am

@Bharat_Dhiman

To assist you in building the string from your array of tokens, you can use the following code:

string[] tokens = new string[] { "MCX_FO|426248", "MCX_FO|425673", "MCX_FO|425797", "MCX_FO|426265", "MCX_FO|426252", "MCX_FO|259238" };
string tokenArrayString = string.Join("\",\"", tokens);

This should aid in progressing with your task. For further assistance, I recommend referring to online C# technical documentation, which could be quite helpful in overcoming any additional challenges.

Thank you!

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Multiple token subscription issue

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