This option sets maximum receive buffer size for incoming control
frame. Basically the library checks the length field of the incoming
control frame. For frames with name/value header block, the library
also checks the length of inflated block is also under the limit. This
is done while incrementally inflating block. If the length of frames
with name/value header block exceeds the limit, the library will issue
RST_STREAM with FRAME_TOO_LARGE. For other frames, it will issue
GOAWAY.
Current SPDY/3 spec does not clearly prohibit to send
delta_window_size which makes resulting window size more than initial
window size. For this reason, spdylay_submit_window_update() can send
delta_window_size in [1, (1 << 31)-1], inclusive, without bounded by
stream's recv_window_size. Of course, the application is now
responsible to keep the resulting window size <= (1 << 31)-1.
spdylay_submit_window_update() now returns
SPDYLAY_ERR_INVALID_ARGUMENT if delta_window_size is 0 or negative.
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.
We say the header block is invalid if at least one of the following
condition is true:
There are duplicate header names; or the header names are not
encoded in US-ASCII character set and not lower cased; or the
header name is zero-length string; or the header value contains
multiple in-sequence NUL bytes.
spdylay_frame_unpack_nv() returns SPDYLAY_ERR_INVALID_HEADER_BLOCK
if the unpacking suceeded but it found the header block is invalid.
This means that caller treats it as success, but do additional
processing for invalid header block if it wants.
The functions calling spdylay_frame_unpack_nv() also return
SPDYLAY_ERR_INVALID_HEADER_BLOCK.
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.
