The spdylay_data contains full of implementation details and is not
used in public API. It should be hidden.
The spdylay_frame union now only contains the control frame.
Made spdylay_session_get_pri_lowest() to get the lowest priority value
for the current session.
This change allows the application code to get the lowest priority value
without knowing the protocol version which the current session uses.
spdylay_session_mem_recv() processes input bytes as the received data
from the remote endpoint. spdylay_session_recv() uses it internally.
The spdylay_inbound_buffer and ibuf member in spdylay_session is removed.
The buffer is allocated in the stack when spdylay_session_recv() is called.
Now remote and local settings are stored separately.
The initial window size is included in SETTINGS frame, all active stream's
window sizes are now updated.
Removed the initial_window_size member from spdylay_stream because
it is the same as remote_settings's initial window size.
This callback function is invoked after the control frame
is not sent because of the error. The error is indicated by
the error argument, which is one of the values defined in spdylay_error.
If max concurrent streams limit is reached, SYN_STREAM frames are not sent
and backed off. If other type of frame is waiting in the tx queue, it is
sent first. We introduced another priority queue for this purpose.
In this change we did not add code to send RST_STREAM when SYN_STREAM is
received but max concurrent stream is reached.
Specified stream_user_data_arg can be retrieved by
spdylay_session_get_stream_user_data() function. The application code can use
this function insde spdylay_on_ctrl_send_callback() and identify stream ID
for the request associated by the stream_user_data.
The sample usage is in examples/spdycat.cc.
