write_stream: terminate handler function

[bart6114]

According to the help page on write_stream(f):

f: Callback function. It should have a single argument, a raw vector containing the bytes recieved from the server. This will usually be 16k or less. It should return the length of bytes processed - if this is less than the input length, the function will terminate.

However, I don't think it currently checks the returned length of bytes processed. For example the below code will process just fine.

GET("https://jeroenooms.github.io/data/diamonds.json",
    write_stream(function(x) {
      print(length(x))
      return(NULL)  # or any value
    })
)

Ideally I would like some way to terminate the handler (not just when the stream ends).

[hadley]

@jeroenooms is this an rcurl problem? Or am I passing the function in the wrong way?

[hadley]

Oh just read the curl thread. I'll update the docs.