C#•11mo ago

Protocol buffer from Yahoo Finance API

I'm trying to pull data (specifically "price") from a websocket (wss://streamer.finance.yahoo.com/), and it works great. The problem is that the data is in a protocol buffer format. I have the .proto file to decode this data, but I don't actually understand how to do it in C#. It works on an online protobuf decoder (https://www.protobufpal.com/), so I know there is no issue with my .proto file or the data (see image). I tried a few different ways but I just can't get it to work. I'm a beginner in C# so don't know all the concepts.

31 Replies

Unknown User•11mo ago

Message Not Public

Jimmacle•11mo ago

i'm using https://github.com/protobuf-net/protobuf-net for my current project, it also has a source generator package to generate models from .proto files

GitHub

GitHub - protobuf-net/protobuf-net: Protocol Buffers library for id...

Protocol Buffers library for idiomatic .NET . Contribute to protobuf-net/protobuf-net development by creating an account on GitHub.

Unknown User•11mo ago

Message Not Public

IsaaaakOP•11mo ago

Well, I don't know how to get that base64 protobuf thing to turn into an object with the property "price". Or like any way to access "price" (see first screenshot). I suppose "doesn't work" is the wrong wording, more like I just can't figure it out I've seen some tutorials and people mentioning this. Maybe I should just go with this instead of googles version. Going to try it

Unknown User•11mo ago

Message Not Public

IsaaaakOP•11mo ago

it isn't

Unknown User•11mo ago

Message Not Public

IsaaaakOP•11mo ago

It's just a websocket right now

Unknown User•11mo ago

Message Not Public

IsaaaakOP•11mo ago

uh idk about that, the websocket works fine I just kind of stole it of a tutorial

MODiX•11mo ago

TeBeCo

a github repo link might help if you push that code above

Quoted by

<@689473681302224947> from #Protocol buffer from Yahoo Finance API (click here)

React with ❌ to remove this embed.

IsaaaakOP•11mo ago

@TeBeCo https://github.com/izzeww/YahooFinanceWebSocket

GitHub

GitHub - izzeww/YahooFinanceWebSocket

Contribute to izzeww/YahooFinanceWebSocket development by creating an account on GitHub.

Unknown User•11mo ago

Message Not Public

IsaaaakOP•11mo ago

Unknown User•11mo ago

Message Not Public

IsaaaakOP•11mo ago

Those strings you see, they are base64 protobuf:s

Unknown User•11mo ago

Message Not Public

IsaaaakOP•11mo ago

I need to convert them into objects, or JSON or something like that, so I can access the properties (like "price") no this part is the issue I'm gonna read up a bit on protobuf-net and try it out

Unknown User•11mo ago

Message Not Public

IsaaaakOP•11mo ago

thanks, gonna try that

Unknown User•11mo ago

Message Not Public

IsaaaakOP•11mo ago

wooah

MODiX•11mo ago

TeBeCo

Convert.FromBase64 then give it to proto reader/serializer

Quoted by

<@689473681302224947> from #Protocol buffer from Yahoo Finance API (click here)

React with ❌ to remove this embed.

Unknown User•11mo ago

Message Not Public

IsaaaakOP•11mo ago

think it's supposed to be that way

Unknown User•11mo ago

Message Not Public

IsaaaakOP•11mo ago

true, seems weird ye it's an index, so it's right You can change it to something else if you want, like "ES=F"

Unknown User•11mo ago

Message Not Public

IsaaaakOP•11mo ago

string message = "{\"subscribe\":[\"ETH-USD\", \"BTC-USD\", \"YM=F\", \"ES=F\", \"QM=F\", \"RTY=F\", \"MNQ=F\", \"NQ=F\"]}";

string message = "{\"subscribe\":[\"ETH-USD\", \"BTC-USD\", \"YM=F\", \"ES=F\", \"QM=F\", \"RTY=F\", \"MNQ=F\", \"NQ=F\"]}";

Unknown User•11mo ago

Message Not Public

IsaaaakOP•11mo ago

thanks you so much, didn't realize it was that "simple" (really very hard, for me)

Gaming

Programming

Protocol buffer from Yahoo Finance API