ocaml-cohttp
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mirage
provide raw/unbuffered channels
The input channel is always buffered and the Lwt_stream (or underlying Lwt_io from Conduit) doesn't have a way to "give me whatever is available now" without blocking/waiting for a fixed amount of bytes. This can be problematic if you want to implement CONNECT for example.
There should be a way to switch the input channel from buffered to unbuffered mode.
On output this is not much of a problem because you can just flush it, although when sending a response from a file the source is already buffered, and the buffering on the destination seems redundant.
@djs55 also has a need for this to pass the fd around to another process once the headers are read. I think that Lwt_io might need to be extended to access the buffer though...
On 3 Jun 2015, at 09:32, Török Edwin [email protected] wrote:
The input channel is always buffered and the Lwt_stream (or underlying Lwt_io from Conduit) doesn't have a way to "give me whatever is available now" without blocking/waiting for a fixed amount of bytes. This can be problematic if you want to implement CONNECT for example. There should be a way to switch the input channel from buffered to unbuffered mode.
On output this is not much of a problem because you can just flush it, although when sending a response from a file the source is already buffered, and the buffering on the destination seems redundant.
— Reply to this email directly or view it on GitHub https://github.com/mirage/ocaml-cohttp/issues/367.
It's already possible (but painful) to manipule raw channels. See https://github.com/mirage/ocaml-git/blob/master/lib/http/git_http.ml#L183 Exposing helpers for doing this would be helpful.
