Client streams are not resetable

[sorced-jim]

It is not possible to reset in progress streams from the client at the moment. The reason is that a client calls
spdylay_submit_request with some stream user data. The users callbacks get the stream user data to pass information to the client. However, the stream id is needed to call spdylay_submit_rst_stream.

I'm currently hacking around this by setting the stream id on my stream user data object in my request body callback and the syn_reply callback.

This means that for bodiless requests can't be cancelled between sending a request and getting the first control header for the response.

I think the solution would be to return the stream_id from submit_request.

[tatsuhiro-t]

2012年3月3日6:47 sorced-jim
reply@reply.github.com:

It is not possible to reset in progress streams from the client at the moment. The reason is that a client calls
spdylay_submit_request with some stream user data. The users callbacks get the stream user data to pass information to the client. However, the stream id is needed to call spdylay_submit_rst_stream.

I'm currently hacking around this by setting the stream id on my stream user data object in my request body callback and the syn_reply callback.

I think you can use before_ctrl_send_callback here.
In SYN_STREAM, this callback is called after stream is opened and its
frame->syn_stream.stream_id
has valid stream ID assigned. The
spdylay_session_get_stream_user_data() can be called from there.

This means that for bodiless requests can't be cancelled between sending a request and getting the first control header for the response.

I think the solution would be to return the stream_id from submit_request.

I use heap to sort pending SYN_STREAM frames in priority so that
higher one gets sent early.
This means we could not determine the stream ID before SYN_STREAM is
about to sent because
the frame with higher priority added later will have smaller stream ID
than the frame with lower priority
added before.

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Reply to this email directly or view it on GitHub:
#14

[sorced-jim]

I'll leave this bug open until there is some documentation about this.

[tatsuhiro-t]

I documented about this in spdylay.h. I also added simplified time chart which tells when callback functions are called.