Limiting size of HTTP response body

[jo...@mobify.me]

Hey Gophers,

I'm writing an HTTP Client that loads chunked responses bodies with arbitrary sizes into memory.  

To prevent large responses from consuming too much memory, I'd like to be able to limit the number of bytes that I read from any particular response.

My thinking is to use a struct similar to `io.LimitedReader` to wrap the response's Body and implementing my own Read method which explodes if the caller reads more than a limited number of bytes.

Here is my initial implementation: https://play.golang.org/p/aJHdROxce8

I'm a complete #golang noob, so any comments on whether I'm coming at this from the right angle would be very helpful!

Thanks,

John

[Brad Fitzpatrick]

Seems good. I suppose the caller is still responsible for calling Request.Body.Close after the error to ultimately close the TCP connection with all the unwanted data arriving?

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[John Boxall]

Good point thank you!

jb