nghttp2/python/spdylay.pyx

756 lines
26 KiB
Cython

cimport cspdylay
from libc.stdlib cimport malloc, free
from libc.string cimport memcpy, memset
from libc.stdint cimport uint8_t, uint16_t, uint32_t, int32_t
class EOFError(Exception):
pass
class CallbackFailureError(Exception):
pass
class TemporalCallbackFailureError(Exception):
pass
class InvalidArgumentError(Exception):
pass
class ZlibError(Exception):
pass
class UnsupportedVersionError(Exception):
pass
class DataProvider:
def __init__(self, source, read_cb):
self.source = source
self.read_cb = read_cb
cdef class CtrlFrame:
cdef uint16_t version
cdef uint16_t frame_type
cdef uint8_t flags
cdef int32_t length
cdef void fillhd(self, cspdylay.spdylay_ctrl_hd *hd):
self.version = hd.version
self.frame_type = hd.type
self.flags = hd.flags
self.length = hd.length
property version:
def __get__(self):
return self.version
property frame_type:
def __get__(self):
return self.frame_type
property flags:
def __get__(self):
return self.flags
property length:
def __get__(self):
return self.length
cdef class SynStreamFrame(CtrlFrame):
cdef int32_t stream_id
cdef int32_t assoc_stream_id
cdef uint8_t pri
cdef uint8_t slot
cdef object nv
cdef void fill(self, cspdylay.spdylay_syn_stream *frame):
self.fillhd(&frame.hd)
self.stream_id = frame.stream_id
self.assoc_stream_id = frame.assoc_stream_id
self.pri = frame.pri
self.slot = frame.slot
self.nv = cnv2pynv(frame.nv)
property stream_id:
def __get__(self):
return self.stream_id
property assoc_stream_id:
def __get__(self):
return self.assoc_stream_id
property pri:
def __get__(self):
return self.pri
property nv:
def __get__(self):
return self.nv
cdef class SynReplyFrame(CtrlFrame):
cdef int32_t stream_id
cdef object nv
cdef void fill(self, cspdylay.spdylay_syn_reply *frame):
self.fillhd(&frame.hd)
self.stream_id = frame.stream_id
self.nv = cnv2pynv(frame.nv)
property stream_id:
def __get__(self):
return self.stream_id
property nv:
def __get__(self):
return self.nv
cdef class RstStreamFrame(CtrlFrame):
cdef int32_t stream_id
cdef uint32_t status_code
cdef void fill(self, cspdylay.spdylay_rst_stream *frame):
self.fillhd(&frame.hd)
self.stream_id = frame.stream_id
self.status_code = frame.status_code
property stream_id:
def __get__(self):
return self.stream_id
property status_code:
def __get__(self):
return self.status_code
cdef class SettingsFrame(CtrlFrame):
cdef object iv
cdef void fill(self, cspdylay.spdylay_settings *frame):
self.fillhd(&frame.hd)
self.iv = csettings2pysettings(frame.niv, frame.iv)
property iv:
def __get__(self):
return self.iv
cdef class GoawayFrame(CtrlFrame):
cdef int32_t last_good_stream_id
cdef uint32_t status_code
cdef void fill(self, cspdylay.spdylay_goaway *frame):
self.fillhd(&frame.hd)
self.last_good_stream_id = frame.last_good_stream_id
self.status_code = frame.status_code
property last_good_stream_id:
def __get__(self):
return self.last_good_stream_id
property status_code:
def __get__(self):
return self.status_code
cdef object cnv2pynv(char **nv):
''' Convert C-style name/value pairs ``nv`` to Python style
pairs. '''
cdef size_t i
pynv = []
i = 0
while nv[i] != NULL:
pynv.append((nv[i], nv[i+1]))
i += 2
return pynv
cdef char** pynv2cnv(object nv) except *:
''' Convert Python style name/value pairs ``nv`` to C-style
pairs. Python style name/value pairs are list of tuple (key,
value).'''
cdef char **cnv = <char**>malloc((len(nv)*2+1)*sizeof(char*))
cdef size_t i
if cnv == NULL:
raise MemoryError()
i = 0
for n, v in nv:
cnv[i] = n
i += 1
cnv[i] = v
i += 1
cnv[i] = NULL
return cnv
cdef object csettings2pysettings(size_t niv,
cspdylay.spdylay_settings_entry *iv):
cdef size_t i = 0
cdef cspdylay.spdylay_settings_entry *ent
res = []
while i < niv:
ent = &iv[i]
res.append((ent.settings_id, ent.flags, ent.value))
i += 1
return res
cdef cspdylay.spdylay_settings_entry* pysettings2csettings(object iv) except *:
cdef size_t i
cdef cspdylay.spdylay_settings_entry *civ =\
<cspdylay.spdylay_settings_entry*>malloc(\
len(iv)*sizeof(cspdylay.spdylay_settings_entry))
if civ == NULL:
raise MemoryError()
i = 0
for settings_id, flags, value in iv:
civ[i].settings_id = settings_id
civ[i].flags = flags
civ[i].value = value
i += 1
return civ
cdef cspdylay.spdylay_data_provider create_c_data_prd\
(cspdylay.spdylay_data_provider *cdata_prd, object pydata_prd):
cdata_prd.source.ptr = <void*>pydata_prd
cdata_prd.read_callback = read_callback
cdef void on_ctrl_recv_callback(cspdylay.spdylay_session *session,
cspdylay.spdylay_frame_type frame_type,
cspdylay.spdylay_frame *frame,
void *user_data):
cdef SynStreamFrame syn_stream
cdef SynReplyFrame syn_reply
cdef RstStreamFrame rst_stream
cdef SettingsFrame settings
cdef GoawayFrame goaway
cdef Session pysession = <Session>user_data
if not pysession.on_ctrl_recv_cb:
return
pyframe = None
if frame_type == cspdylay.SPDYLAY_SYN_STREAM:
syn_stream = SynStreamFrame()
syn_stream.fill(&frame.syn_stream)
pyframe = syn_stream
elif frame_type == cspdylay.SPDYLAY_SYN_REPLY:
syn_reply = SynReplyFrame()
syn_reply.fill(&frame.syn_reply)
pyframe = syn_reply
elif frame_type == cspdylay.SPDYLAY_RST_STREAM:
rst_stream = RstStreamFrame()
rst_stream.fill(&frame.rst_stream)
pyframe = rst_stream
elif frame_type == cspdylay.SPDYLAY_SETTINGS:
settings = SettingsFrame()
settings.fill(&frame.settings)
pyframe = settings
elif frame_type == cspdylay.SPDYLAY_GOAWAY:
goaway = GoawayFrame()
goaway.fill(&frame.goaway)
pyframe = goaway
if pyframe:
try:
pysession.on_ctrl_recv_cb(pysession, pyframe)
except Exception as e:
pysession.error = e
except BaseException as e:
pysession.base_error = e
cdef ssize_t recv_callback(cspdylay.spdylay_session *session,
uint8_t *buf, size_t length,
int flags, void *user_data):
cdef Session pysession = <Session>user_data
if pysession.recv_callback:
try:
data = pysession.recv_callback(pysession, length)
except EOFError as e:
pysession.error = e
return cspdylay.SPDYLAY_ERR_EOF
except CallbackFailureError as e:
pysession.error = e
return cspdylay.SPDYLAY_ERR_CALLBACK_FAILURE
except Exception as e:
pysession.error = e
return cspdylay.SPDYLAY_ERR_CALLBACK_FAILURE
except BaseException as e:
pysession.base_error = e
return cspdylay.SPDYLAY_ERR_CALLBACK_FAILURE
if data:
if len(data) > length:
return cspdylay.SPDYLAY_ERR_CALLBACK_FAILURE
memcpy(buf, <char*>data, len(data))
return len(data)
else:
return cspdylay.SPDYLAY_ERR_WOULDBLOCK
else:
return cspdylay.SPDYLAY_ERR_CALLBACK_FAILURE
cdef ssize_t send_callback(cspdylay.spdylay_session *session,
uint8_t *data, size_t length, int flags,
void *user_data):
cdef Session pysession = <Session>user_data
if pysession.send_callback:
try:
rv = pysession.send_callback(pysession, (<char*>data)[:length])
except CallbackFailureError as e:
pysession.error = e
return cspdylay.SPDYLAY_ERR_CALLBACK_FAILURE
except Exception as e:
pysession.error = e
return cspdylay.SPDYLAY_ERR_CALLBACK_FAILURE
except BaseException as e:
pysession.base_error = e
return cspdylay.SPDYLAY_ERR_CALLBACK_FAILURE
if rv:
return rv
else:
return cspdylay.SPDYLAY_ERR_WOULDBLOCK
else:
# If no send_callback is given, pretend all data were sent and
# just return length
return length
cdef void on_data_chunk_recv_callback(cspdylay.spdylay_session *session,
uint8_t flags, int32_t stream_id,
uint8_t *data, size_t length,
void *user_data):
cdef Session pysession = <Session>user_data
if pysession.on_data_chunk_recv_cb:
try:
pysession.on_data_chunk_recv_cb(pysession, flags, stream_id,
(<char*>data)[:length])
except Exception as e:
pysession.error = e
except BaseException as e:
pysession.base_error = e
cdef void on_stream_close_callback(cspdylay.spdylay_session *session,
int32_t stream_id,
cspdylay.spdylay_status_code status_code,
void *user_data):
cdef Session pysession = <Session>user_data
if pysession.on_stream_close_cb:
try:
pysession.on_stream_close_cb(pysession, stream_id, status_code)
except Exception as e:
pysession.error = e
except BaseException as e:
pysession.base_error = e
cdef void on_request_recv_callback(cspdylay.spdylay_session *session,
int32_t stream_id,
void *user_data):
cdef Session pysession = <Session>user_data
if pysession.on_request_recv_cb:
try:
pysession.on_request_recv_cb(pysession, stream_id)
except Exception as e:
pysession.error = e
except BaseException as e:
pysession.base_error = e
cdef ssize_t read_callback(cspdylay.spdylay_session *session,
int32_t stream_id, uint8_t *buf, size_t length,
int *eof, cspdylay.spdylay_data_source *source,
void *user_data):
cdef Session pysession = <Session>user_data
data_prd = <object>source.ptr
try:
res = data_prd.read_cb(pysession, stream_id, length,
data_prd.source)
except TemporalCallbackFailureError as e:
return cspdylay.SPDYLAY_ERR_TEMPORAL_CALLBACK_FAILURE
except CallbackFailureError as e:
pysession.error = e
return cspdylay.SPDYLAY_ERR_CALLBACK_FAILURE
except Exception as e:
pysession.error = e
return cspdylay.SPDYLAY_ERR_CALLBACK_FAILURE
except BaseException as e:
pysession.base_error = e
return cspdylay.SPDYLAY_ERR_CALLBACK_FAILURE
if res == cspdylay.SPDYLAY_ERR_DEFERRED:
return res
elif res:
if len(res) > length:
return cspdylay.SPDYLAY_ERR_CALLBACK_FAILURE
memcpy(buf, <char*>res, len(res))
return len(res)
else:
eof[0] = 1
return 0
cdef class Session:
cdef cspdylay.spdylay_session *_c_session
cdef object recv_callback
cdef object send_callback
cdef object on_ctrl_recv_cb
cdef object on_data_chunk_recv_cb
cdef object on_stream_close_cb
cdef object on_request_recv_cb
cdef object user_data
cdef object error
cdef object base_error
property user_data:
def __get__(self):
return self.user_data
def __cinit__(self, side, version,
send_cb=None, recv_cb=None,
on_ctrl_recv_cb=None,
on_data_chunk_recv_cb=None,
on_stream_close_cb=None,
on_request_recv_cb=None,
user_data=None):
cdef cspdylay.spdylay_session_callbacks c_session_callbacks
cdef int rv
self._c_session = NULL
memset(&c_session_callbacks, 0, sizeof(c_session_callbacks))
c_session_callbacks.recv_callback = \
<cspdylay.spdylay_recv_callback>recv_callback
c_session_callbacks.send_callback = \
<cspdylay.spdylay_send_callback>send_callback
c_session_callbacks.on_ctrl_recv_callback = \
<cspdylay.spdylay_on_ctrl_recv_callback>on_ctrl_recv_callback
# c_session_callbacks.on_invalid_ctrl_recv_callback = NULL
c_session_callbacks.on_data_chunk_recv_callback = \
<cspdylay.spdylay_on_data_chunk_recv_callback>\
on_data_chunk_recv_callback
# c_session_callbacks.on_data_recv_callback = NULL
# c_session_callbacks.before_ctrl_send_callback = NULL
# c_session_callbacks.on_ctrl_send_callback = NULL
# c_session_callbacks.on_ctrl_not_send_callback = NULL
# c_session_callbacks.on_data_send_callback = NULL
c_session_callbacks.on_stream_close_callback = \
<cspdylay.spdylay_on_stream_close_callback>on_stream_close_callback
c_session_callbacks.on_request_recv_callback = \
<cspdylay.spdylay_on_request_recv_callback>on_request_recv_callback
# c_session_callbacks.get_credential_proof = NULL
# c_session_callbacks.get_credential_ncerts = NULL
# c_session_callbacks.get_credential_cert = NULL
# c_session_callbacks.on_ctrl_recv_parse_error_callback = NULL
# c_session_callbacks.on_unknown_ctrl_recv_callback = NULL
self.recv_callback = recv_cb
self.send_callback = send_cb
self.on_data_chunk_recv_cb = on_data_chunk_recv_cb
self.on_ctrl_recv_cb = on_ctrl_recv_cb
self.on_stream_close_cb = on_stream_close_cb
self.on_request_recv_cb = on_request_recv_cb
self.user_data = user_data
if side == CLIENT:
rv = cspdylay.spdylay_session_client_new(&self._c_session,
version,
&c_session_callbacks,
<void*>self)
elif side == SERVER:
rv = cspdylay.spdylay_session_server_new(&self._c_session,
version,
&c_session_callbacks,
<void*>self)
else:
raise InvalidArgumentError('side must be either CLIENT or SERVER')
if rv == 0:
return
elif rv == cspdylay.SPDYLAY_ERR_NOMEM:
raise MemoryError()
elif rv == cspdylay.SPDYLAY_ERR_ZLIB:
raise ZlibError(cspdylay.spdylay_strerror(rv))
elif rv == cspdylay.SPDYLAY_ERR_UNSUPPORTED_VERSION:
raise UnsupportedVersionError(cspdylay.spdylay_strerror(rv))
def __init__(self, side, version,
send_cb=None, recv_cb=None,
on_ctrl_recv_cb=None,
on_data_chunk_recv_cb=None,
on_stream_close_cb=None,
on_request_recv_cb=None,
user_data=None):
pass
def __dealloc__(self):
cspdylay.spdylay_session_del(self._c_session)
cpdef recv(self, data=None):
cdef int rv
cdef char *c_data
self.error = self.base_error = None
if data is None:
rv = cspdylay.spdylay_session_recv(self._c_session)
else:
c_data = data
rv = cspdylay.spdylay_session_mem_recv(self._c_session,
<uint8_t*>c_data, len(data))
if self.base_error:
raise self.base_error
if self.error:
raise self.error
if rv >= 0:
return
elif rv == cspdylay.SPDYLAY_ERR_EOF:
raise EOFError()
elif rv == cspdylay.SPDYLAY_ERR_NOMEM:
raise MemoryError()
elif rv == cspdylay.SPDYLAY_ERR_CALLBACK_FAILURE:
raise CallbackFailureError()
cpdef send(self):
cdef int rv
self.error = self.base_error = None
rv = cspdylay.spdylay_session_send(self._c_session)
if self.base_error:
raise self.base_error
elif self.error:
raise self.error
if rv == 0:
return
elif rv == cspdylay.SPDYLAY_ERR_NOMEM:
raise MemoryError()
elif rv == cspdylay.SPDYLAY_ERR_CALLBACK_FAILURE:
raise CallbackFailureError()
cpdef resume_data(self, stream_id):
cpdef int rv
rv = cspdylay.spdylay_session_resume_data(self._c_session, stream_id)
if rv == 0:
return
elif rv == cspdylay.SPDYLAY_ERR_INVALID_ARGUMENT:
raise InvalidArgumentError(cspdylay.spdylay_strerror(rv))
elif rv == cspdylay.SPDYLAY_ERR_NOMEM:
raise MemoryError()
cpdef want_read(self):
return cspdylay.spdylay_session_want_read(self._c_session)
cpdef want_write(self):
return cspdylay.spdylay_session_want_write(self._c_session)
cpdef get_stream_user_data(self, stream_id):
return <object>cspdylay.spdylay_session_get_stream_user_data(\
self._c_session, stream_id)
cpdef get_outbound_queue_size(self):
return cspdylay.spdylay_session_get_outbound_queue_size(\
self._c_session)
cpdef get_pri_lowest(self):
return cspdylay.spdylay_session_get_pri_lowest(self._c_session)
cpdef fail_session(self, status_code):
cdef int rv
rv = cspdylay.spdylay_session_fail_session(self._c_session,
status_code)
if rv == 0:
return
elif rv == cspdylay.SPDYLAY_ERR_NOMEM:
raise MemoryError()
cpdef submit_request(self, pri, nv, data_prd=None, stream_user_data=None):
''' Submits frame and optionally one or more DATA frames. If
data_prd is not None, it provides data which will be sent in
subsequent DATA frames. It must have 2 attributes: source and
read_cb. source is an opaque object and passed to read_cb
callback. read_cb must be None or a callable object. The
library calls it when it needs data. 4 arguments are passed to
read_cb: session, stream_id, length and source. And it returns
at most length bytes of byte string. The session is self. The
stream_id is the stream ID of the stream. The length is the
maximum length the library expects. read_cb must not return
more that length bytes. The source is the object passed in
data_prd.source.
'''
cdef cspdylay.spdylay_data_provider c_data_prd
cdef cspdylay.spdylay_data_provider *c_data_prd_ptr
cdef char **cnv = pynv2cnv(nv)
cpdef int rv
if data_prd:
create_c_data_prd(&c_data_prd, data_prd)
c_data_prd_ptr = &c_data_prd
else:
c_data_prd_ptr = NULL
rv = cspdylay.spdylay_submit_request(self._c_session, pri, cnv,
c_data_prd_ptr,
<void*>stream_user_data)
free(cnv)
if rv == 0:
return
elif rv == cspdylay.SPDYLAY_ERR_INVALID_ARGUMENT:
raise InvalidArgumentError(cspdylay.spdylay_strerror(rv))
elif rv == cspdylay.SPDYLAY_ERR_NOMEM:
raise MemoryError()
cpdef submit_response(self, stream_id, nv, data_prd=None):
cdef cspdylay.spdylay_data_provider c_data_prd
cdef cspdylay.spdylay_data_provider *c_data_prd_ptr
cdef char **cnv = pynv2cnv(nv)
cpdef int rv
if data_prd:
create_c_data_prd(&c_data_prd, data_prd)
c_data_prd_ptr = &c_data_prd
else:
c_data_prd_ptr = NULL
rv = cspdylay.spdylay_submit_response(self._c_session, stream_id,
cnv, c_data_prd_ptr)
free(cnv)
if rv == 0:
return
elif rv == cspdylay.SPDYLAY_ERR_INVALID_ARGUMENT:
raise InvalidArgumentError(cspdylay.spdylay_strerror(rv))
elif rv == cspdylay.SPDYLAY_ERR_NOMEM:
raise MemoryError()
cpdef submit_syn_stream(self, flags, assoc_stream_id, pri, nv,
stream_user_data):
cdef char **cnv = pynv2cnv(nv)
cdef int rv
rv = cspdylay.spdylay_submit_syn_stream(self._c_session,
flags,
assoc_stream_id,
pri,
cnv,
<void*>stream_user_data)
free(cnv)
if rv == 0:
return
elif rv == cspdylay.SPDYLAY_ERR_INVALID_ARGUMENT:
raise InvalidArgumentError(cspdylay.spdylay_strerror(rv))
elif rv == cspdylay.SPDYLAY_ERR_NOMEM:
raise MemoryError()
cpdef submit_syn_reply(self, flags, stream_id, nv):
cdef char **cnv = pynv2cnv(nv)
cdef int rv
rv = cspdylay.spdylay_submit_syn_reply(self._c_session,
flags, stream_id, cnv)
free(cnv)
if rv == 0:
return
elif rv == cspdylay.SPDYLAY_ERR_INVALID_ARGUMENT:
raise InvalidArgumentError(cspdylay.spdylay_strerror(rv))
elif rv == cspdylay.SPDYLAY_ERR_NOMEM:
raise MemoryError()
cpdef submit_rst_stream(self, stream_id, status_code):
cdef int rv
rv = cspdylay.spdylay_submit_rst_stream(self._c_session, stream_id,
status_code)
if rv == 0:
return
elif rv == cspdylay.SPDYLAY_ERR_NOMEM:
raise MemoryError()
cpdef submit_goaway(self, status_code):
cdef int rv
rv = cspdylay.spdylay_submit_goaway(self._c_session, status_code)
if rv == 0:
return
elif rv == cspdylay.SPDYLAY_ERR_NOMEM:
raise MemoryError()
cpdef submit_settings(self, flags, iv):
''' Submit SETTINGS frame. iv is list of tuple (settings_id,
flag, value)
'''
cdef int rv
cdef cspdylay.spdylay_settings_entry *civ = pysettings2csettings(iv)
rv = cspdylay.spdylay_submit_settings(self._c_session, flags,
civ, len(iv))
free(civ)
if rv == 0:
return
elif rv == cspdylay.SPDYLAY_ERR_INVALID_ARGUMENT:
raise InvalidArgumentError(cspdylay.spdylay_strerror(rv))
elif rv == cspdylay.SPDYLAY_ERR_NOMEM:
raise MemoryError()
# Side
CLIENT = 1
SERVER = 2
# SPDY protocol version
PROTO_SPDY2 = cspdylay.SPDYLAY_PROTO_SPDY2
PROTO_SPDY3 = cspdylay.SPDYLAY_PROTO_SPDY3
# Control frame flags
CTRL_FLAG_NONE = cspdylay.SPDYLAY_CTRL_FLAG_NONE
CTRL_FLAG_FIN = cspdylay.SPDYLAY_CTRL_FLAG_FIN
CTRL_FLAG_UNIDIRECTIONAL = cspdylay.SPDYLAY_CTRL_FLAG_UNIDIRECTIONAL
# Data frame flags
DATA_FLAG_NONE = cspdylay.SPDYLAY_DATA_FLAG_NONE
DATA_FLAG_FIN = cspdylay.SPDYLAY_DATA_FLAG_FIN
# Error codes used in callback
ERR_OK = 0 # Not defined in <spdylay/spdylay.h>
ERR_EOF = cspdylay.SPDYLAY_ERR_EOF
ERR_DEFERRED = cspdylay.SPDYLAY_ERR_DEFERRED
# The status code for RST_STREAM
OK = cspdylay.SPDYLAY_OK
PROTOCOL_ERROR = cspdylay.SPDYLAY_PROTOCOL_ERROR
INVALID_STREAM = cspdylay.SPDYLAY_INVALID_STREAM
REFUSED_STREAM = cspdylay.SPDYLAY_REFUSED_STREAM
UNSUPPORTED_VERSION = cspdylay.SPDYLAY_UNSUPPORTED_VERSION
CANCEL = cspdylay.SPDYLAY_CANCEL
INTERNAL_ERROR = cspdylay.SPDYLAY_INTERNAL_ERROR
FLOW_CONTROL_ERROR = cspdylay.SPDYLAY_FLOW_CONTROL_ERROR
# Following status codes were introduced in SPDY/3
STREAM_IN_USE = cspdylay.SPDYLAY_STREAM_IN_USE
STREAM_ALREADY_CLOSED = cspdylay.SPDYLAY_STREAM_ALREADY_CLOSED
INVALID_CREDENTIALS = cspdylay.SPDYLAY_INVALID_CREDENTIALS
FRAME_TOO_LARGE = cspdylay.SPDYLAY_FRAME_TOO_LARGE
# The status codes for GOAWAY, introduced in SPDY/3.
GOAWAY_OK = cspdylay.SPDYLAY_GOAWAY_OK
GOAWAY_PROTOCOL_ERROR = cspdylay.SPDYLAY_GOAWAY_PROTOCOL_ERROR
GOAWAY_INTERNAL_ERROR = cspdylay.SPDYLAY_GOAWAY_INTERNAL_ERROR
# Frame types
SYN_STREAM = cspdylay.SPDYLAY_SYN_STREAM
SYN_REPLY = cspdylay.SPDYLAY_SYN_REPLY
RST_STREAM = cspdylay.SPDYLAY_RST_STREAM
SETTINGS = cspdylay.SPDYLAY_SETTINGS
NOOP = cspdylay.SPDYLAY_NOOP
PING = cspdylay.SPDYLAY_PING
GOAWAY = cspdylay.SPDYLAY_GOAWAY
HEADERS = cspdylay.SPDYLAY_HEADERS
WINDOW_UPDATE = cspdylay.SPDYLAY_WINDOW_UPDATE
CREDENTIAL = cspdylay.SPDYLAY_CREDENTIAL
# The flags for the SETTINGS control frame.
FLAG_SETTINGS_NONE = cspdylay.SPDYLAY_FLAG_SETTINGS_NONE
FLAG_SETTINGS_CLEAR_SETTINGS = cspdylay.SPDYLAY_FLAG_SETTINGS_CLEAR_SETTINGS
# The flags for SETTINGS ID/value pair.
ID_FLAG_SETTINGS_NONE = cspdylay.SPDYLAY_ID_FLAG_SETTINGS_NONE
ID_FLAG_SETTINGS_PERSIST_VALUE = cspdylay.SPDYLAY_ID_FLAG_SETTINGS_PERSIST_VALUE
ID_FLAG_SETTINGS_PERSISTED = cspdylay.SPDYLAY_ID_FLAG_SETTINGS_PERSISTED
# The SETTINGS ID.
SETTINGS_UPLOAD_BANDWIDTH = cspdylay.SPDYLAY_SETTINGS_UPLOAD_BANDWIDTH
SETTINGS_DOWNLOAD_BANDWIDTH = cspdylay.SPDYLAY_SETTINGS_DOWNLOAD_BANDWIDTH
SETTINGS_ROUND_TRIP_TIME = cspdylay.SPDYLAY_SETTINGS_ROUND_TRIP_TIME
SETTINGS_MAX_CONCURRENT_STREAMS = \
cspdylay.SPDYLAY_SETTINGS_MAX_CONCURRENT_STREAMS
SETTINGS_CURRENT_CWND = cspdylay.SPDYLAY_SETTINGS_CURRENT_CWND
SETTINGS_DOWNLOAD_RETRANS_RATE = \
cspdylay.SPDYLAY_SETTINGS_DOWNLOAD_RETRANS_RATE
SETTINGS_INITIAL_WINDOW_SIZE = cspdylay.SPDYLAY_SETTINGS_INITIAL_WINDOW_SIZE
SETTINGS_CLIENT_CERTIFICATE_VECTOR_SIZE = \
cspdylay.SPDYLAY_SETTINGS_CLIENT_CERTIFICATE_VECTOR_SIZE
SETTINGS_MAX = cspdylay.SPDYLAY_SETTINGS_MAX