class StreamResponse(collections.MutableMapping, HeadersMixin):
_length_check = True
def __init__(self, *, status=200, reason=None, headers=None):
self._body = None
self._keep_alive = None
self._chunked = False
self._compression = False
self._compression_force = False
self._cookies = SimpleCookie()
self._req = None
self._payload_writer = None
self._eof_sent = False
self._body_length = 0
self._state = {}
if headers is not None:
self._headers = CIMultiDict(headers)
else:
self._headers = CIMultiDict()
self.set_status(status, reason)
@property
def prepared(self):
return self._payload_writer is not None
@property
def task(self):
return getattr(self._req, 'task', None)
@property
def status(self):
return self._status
@property
def chunked(self):
return self._chunked
@property
def compression(self):
return self._compression
@property
def reason(self):
return self._reason
def set_status(self, status, reason=None, _RESPONSES=RESPONSES):
assert not self.prepared, \
'Cannot change the response status code after ' \
'the headers have been sent'
self._status = int(status)
if reason is None:
try:
reason = _RESPONSES[self._status][0]
except Exception:
reason = ''
self._reason = reason
@property
def keep_alive(self):
return self._keep_alive
def force_close(self):
self._keep_alive = False
@property
def body_length(self):
return self._body_length
@property
def output_length(self):
warnings.warn('output_length is deprecated', DeprecationWarning)
return self._payload_writer.buffer_size
def enable_chunked_encoding(self, chunk_size=None):
"""Enables automatic chunked transfer encoding."""
self._chunked = True
if hdrs.CONTENT_LENGTH in self._headers:
raise RuntimeError("You can't enable chunked encoding when "
"a content length is set")
if chunk_size is not None:
warnings.warn('Chunk size is deprecated #1615', DeprecationWarning)
def enable_compression(self, force=None):
"""Enables response compression encoding."""
# Backwards compatibility for when force was a bool <0.17.
if type(force) == bool:
force = ContentCoding.deflate if force else ContentCoding.identity
elif force is not None:
assert isinstance(force, ContentCoding), ("force should one of "
"None, bool or "
"ContentEncoding")
self._compression = True
self._compression_force = force
@property
def headers(self):
return self._headers
@property
def cookies(self):
return self._cookies
def set_cookie(self, name, value, *, expires=None,
domain=None, max_age=None, path='/',
secure=None, httponly=None, version=None):
"""Set or update response cookie.
Sets new cookie or updates existent with new value.
Also updates only those params which are not None.
"""
old = self._cookies.get(name)
if old is not None and old.coded_value == '':
# deleted cookie
self._cookies.pop(name, None)
self._cookies[name] = value
c = self._cookies[name]
if expires is not None:
c['expires'] = expires
elif c.get('expires') == 'Thu, 01 Jan 1970 00:00:00 GMT':
del c['expires']
if domain is not None:
c['domain'] = domain
if max_age is not None:
c['max-age'] = max_age
elif 'max-age' in c:
del c['max-age']
c['path'] = path
if secure is not None:
c['secure'] = secure
if httponly is not None:
c['httponly'] = httponly
if version is not None:
c['version'] = version
def del_cookie(self, name, *, domain=None, path='/'):
"""Delete cookie.
Creates new empty expired cookie.
"""
# TODO: do we need domain/path here?
self._cookies.pop(name, None)
self.set_cookie(name, '', max_age=0,
expires="Thu, 01 Jan 1970 00:00:00 GMT",
domain=domain, path=path)
@property
def content_length(self):
# Just a placeholder for adding setter
return super().content_length
@content_length.setter
def content_length(self, value):
if value is not None:
value = int(value)
if self._chunked:
raise RuntimeError("You can't set content length when "
"chunked encoding is enable")
self._headers[hdrs.CONTENT_LENGTH] = str(value)
else:
self._headers.pop(hdrs.CONTENT_LENGTH, None)
@property
def content_type(self):
# Just a placeholder for adding setter
return super().content_type
@content_type.setter
def content_type(self, value):
self.content_type # read header values if needed
self._content_type = str(value)
self._generate_content_type_header()
@property
def charset(self):
# Just a placeholder for adding setter
return super().charset
@charset.setter
def charset(self, value):
ctype = self.content_type # read header values if needed
if ctype == 'application/octet-stream':
raise RuntimeError("Setting charset for application/octet-stream "
"doesn't make sense, setup content_type first")
if value is None:
self._content_dict.pop('charset', None)
else:
self._content_dict['charset'] = str(value).lower()
self._generate_content_type_header()
@property
def last_modified(self, _LAST_MODIFIED=hdrs.LAST_MODIFIED):
"""The value of Last-Modified HTTP header, or None.
This header is represented as a `datetime` object.
"""
httpdate = self.headers.get(_LAST_MODIFIED)
if httpdate is not None:
timetuple = parsedate(httpdate)
if timetuple is not None:
return datetime.datetime(*timetuple[:6],
tzinfo=datetime.timezone.utc)
return None
@last_modified.setter
def last_modified(self, value):
if value is None:
self.headers.pop(hdrs.LAST_MODIFIED, None)
elif isinstance(value, (int, float)):
self.headers[hdrs.LAST_MODIFIED] = time.strftime(
"%a, %d %b %Y %H:%M:%S GMT", time.gmtime(math.ceil(value)))
elif isinstance(value, datetime.datetime):
self.headers[hdrs.LAST_MODIFIED] = time.strftime(
"%a, %d %b %Y %H:%M:%S GMT", value.utctimetuple())
elif isinstance(value, str):
self.headers[hdrs.LAST_MODIFIED] = value
def _generate_content_type_header(self, CONTENT_TYPE=hdrs.CONTENT_TYPE):
params = '; '.join("%s=%s" % i for i in self._content_dict.items())
if params:
ctype = self._content_type + '; ' + params
else:
ctype = self._content_type
self.headers[CONTENT_TYPE] = ctype
def _do_start_compression(self, coding):
if coding != ContentCoding.identity:
self.headers[hdrs.CONTENT_ENCODING] = coding.value
self._payload_writer.enable_compression(coding.value)
# Compressed payload may have different content length,
# remove the header
self._headers.popall(hdrs.CONTENT_LENGTH, None)
def _start_compression(self, request):
if self._compression_force:
self._do_start_compression(self._compression_force)
else:
accept_encoding = request.headers.get(
hdrs.ACCEPT_ENCODING, '').lower()
for coding in ContentCoding:
if coding.value in accept_encoding:
self._do_start_compression(coding)
return
async def prepare(self, request):
if self._eof_sent:
return
if self._payload_writer is not None:
return self._payload_writer
await request._prepare_hook(self)
return self._start(request)
def _start(self, request,
HttpVersion10=HttpVersion10,
HttpVersion11=HttpVersion11,
CONNECTION=hdrs.CONNECTION,
DATE=hdrs.DATE,
SERVER=hdrs.SERVER,
CONTENT_TYPE=hdrs.CONTENT_TYPE,
CONTENT_LENGTH=hdrs.CONTENT_LENGTH,
SET_COOKIE=hdrs.SET_COOKIE,
SERVER_SOFTWARE=SERVER_SOFTWARE,
TRANSFER_ENCODING=hdrs.TRANSFER_ENCODING):
self._req = request
keep_alive = self._keep_alive
if keep_alive is None:
keep_alive = request.keep_alive
self._keep_alive = keep_alive
version = request.version
writer = self._payload_writer = request._payload_writer
headers = self._headers
for cookie in self._cookies.values():
value = cookie.output(header='')[1:]
headers.add(SET_COOKIE, value)
if self._compression:
self._start_compression(request)
if self._chunked:
if version != HttpVersion11:
raise RuntimeError(
"Using chunked encoding is forbidden "
"for HTTP/{0.major}.{0.minor}".format(request.version))
writer.enable_chunking()
headers[TRANSFER_ENCODING] = 'chunked'
if CONTENT_LENGTH in headers:
del headers[CONTENT_LENGTH]
elif self._length_check:
writer.length = self.content_length
if writer.length is None:
if version >= HttpVersion11:
writer.enable_chunking()
headers[TRANSFER_ENCODING] = 'chunked'
if CONTENT_LENGTH in headers:
del headers[CONTENT_LENGTH]
else:
keep_alive = False
headers.setdefault(CONTENT_TYPE, 'application/octet-stream')
headers.setdefault(DATE, rfc822_formatted_time())
headers.setdefault(SERVER, SERVER_SOFTWARE)
# connection header
if CONNECTION not in headers:
if keep_alive:
if version == HttpVersion10:
headers[CONNECTION] = 'keep-alive'
else:
if version == HttpVersion11:
headers[CONNECTION] = 'close'
# status line
status_line = 'HTTP/{}.{} {} {}\r\n'.format(
version[0], version[1], self._status, self._reason)
writer.write_headers(status_line, headers)
return writer
async def write(self, data):
assert isinstance(data, (bytes, bytearray, memoryview)), \
"data argument must be byte-ish (%r)" % type(data)
if self._eof_sent:
raise RuntimeError("Cannot call write() after write_eof()")
if self._payload_writer is None:
raise RuntimeError("Cannot call write() before prepare()")
await self._payload_writer.write(data)
async def drain(self):
assert not self._eof_sent, "EOF has already been sent"
assert self._payload_writer is not None, \
"Response has not been started"
warnings.warn("drain method is deprecated, use await resp.write()",
DeprecationWarning,
stacklevel=2)
await self._payload_writer.drain()
async def write_eof(self, data=b''):
assert isinstance(data, (bytes, bytearray, memoryview)), \
"data argument must be byte-ish (%r)" % type(data)
if self._eof_sent:
return
assert self._payload_writer is not None, \
"Response has not been started"
await self._payload_writer.write_eof(data)
self._eof_sent = True
self._req = None
self._body_length = self._payload_writer.output_size
self._payload_writer = None
def __repr__(self):
if self._eof_sent:
info = "eof"
elif self.prepared:
info = "{} {} ".format(self._req.method, self._req.path)
else:
info = "not prepared"
return "<{} {} {}>".format(self.__class__.__name__,
self.reason, info)
def __getitem__(self, key):
return self._state[key]
def __setitem__(self, key, value):
self._state[key] = value
def __delitem__(self, key):
del self._state[key]
def __len__(self):
return len(self._state)
def __iter__(self):
return iter(self._state)
def __hash__(self):
return hash(id(self))
class CookieMixin:
def __init__(self) -> None:
super().__init__()
self._cookies = SimpleCookie() # type: SimpleCookie[str]
@property
def cookies(self) -> "SimpleCookie[str]":
return self._cookies
def set_cookie(
self,
name: str,
value: str,
*,
expires: Optional[str] = None,
domain: Optional[str] = None,
max_age: Optional[Union[int, str]] = None,
path: str = "/",
secure: Optional[bool] = None,
httponly: Optional[bool] = None,
version: Optional[str] = None,
samesite: Optional[str] = None,
) -> None:
"""Set or update response cookie.
Sets new cookie or updates existent with new value.
Also updates only those params which are not None.
"""
old = self._cookies.get(name)
if old is not None and old.coded_value == "":
# deleted cookie
self._cookies.pop(name, None)
self._cookies[name] = value
c = self._cookies[name]
if expires is not None:
c["expires"] = expires
elif c.get("expires") == "Thu, 01 Jan 1970 00:00:00 GMT":
del c["expires"]
if domain is not None:
c["domain"] = domain
if max_age is not None:
c["max-age"] = str(max_age)
elif "max-age" in c:
del c["max-age"]
c["path"] = path
if secure is not None:
c["secure"] = secure
if httponly is not None:
c["httponly"] = httponly
if version is not None:
c["version"] = version
if samesite is not None:
c["samesite"] = samesite
def del_cookie(self,
name: str,
*,
domain: Optional[str] = None,
path: str = "/") -> None:
"""Delete cookie.
Creates new empty expired cookie.
"""
# TODO: do we need domain/path here?
self._cookies.pop(name, None)
self.set_cookie(
name,
"",
max_age=0,
expires="Thu, 01 Jan 1970 00:00:00 GMT",
domain=domain,
path=path,
)
class StreamResponse(collections.MutableMapping, HeadersMixin):
_length_check = True
def __init__(self, *, status=200, reason=None, headers=None):
self._body = None
self._keep_alive = None
self._chunked = False
self._compression = False
self._compression_force = None
self._cookies = SimpleCookie()
self._req = None
self._payload_writer = None
self._eof_sent = False
self._body_length = 0
self._state = {}
if headers is not None:
self._headers = CIMultiDict(headers)
else:
self._headers = CIMultiDict()
self.set_status(status, reason)
@property
def prepared(self):
return self._payload_writer is not None
@property
def task(self):
return getattr(self._req, 'task', None)
@property
def status(self):
return self._status
@property
def chunked(self):
return self._chunked
@property
def compression(self):
return self._compression
@property
def reason(self):
return self._reason
def set_status(self, status, reason=None, _RESPONSES=RESPONSES):
assert not self.prepared, \
'Cannot change the response status code after ' \
'the headers have been sent'
self._status = int(status)
if reason is None:
try:
reason = _RESPONSES[self._status][0]
except Exception:
reason = ''
self._reason = reason
@property
def keep_alive(self):
return self._keep_alive
def force_close(self):
self._keep_alive = False
@property
def body_length(self):
return self._body_length
@property
def output_length(self):
warnings.warn('output_length is deprecated', DeprecationWarning)
return self._payload_writer.buffer_size
def enable_chunked_encoding(self, chunk_size=None):
"""Enables automatic chunked transfer encoding."""
self._chunked = True
if hdrs.CONTENT_LENGTH in self._headers:
raise RuntimeError("You can't enable chunked encoding when "
"a content length is set")
if chunk_size is not None:
warnings.warn('Chunk size is deprecated #1615', DeprecationWarning)
def enable_compression(self, force=None):
"""Enables response compression encoding."""
# Backwards compatibility for when force was a bool <0.17.
if type(force) == bool:
force = ContentCoding.deflate if force else ContentCoding.identity
elif force is not None:
assert isinstance(force, ContentCoding), ("force should one of "
"None, bool or "
"ContentEncoding")
self._compression = True
self._compression_force = force
@property
def headers(self):
return self._headers
@property
def cookies(self):
return self._cookies
def set_cookie(self,
name,
value,
*,
expires=None,
domain=None,
max_age=None,
path='/',
secure=None,
httponly=None,
version=None):
"""Set or update response cookie.
Sets new cookie or updates existent with new value.
Also updates only those params which are not None.
"""
old = self._cookies.get(name)
if old is not None and old.coded_value == '':
# deleted cookie
self._cookies.pop(name, None)
self._cookies[name] = value
c = self._cookies[name]
if expires is not None:
c['expires'] = expires
elif c.get('expires') == 'Thu, 01 Jan 1970 00:00:00 GMT':
del c['expires']
if domain is not None:
c['domain'] = domain
if max_age is not None:
c['max-age'] = max_age
elif 'max-age' in c:
del c['max-age']
c['path'] = path
if secure is not None:
c['secure'] = secure
if httponly is not None:
c['httponly'] = httponly
if version is not None:
c['version'] = version
def del_cookie(self, name, *, domain=None, path='/'):
"""Delete cookie.
Creates new empty expired cookie.
"""
# TODO: do we need domain/path here?
self._cookies.pop(name, None)
self.set_cookie(name,
'',
max_age=0,
expires="Thu, 01 Jan 1970 00:00:00 GMT",
domain=domain,
path=path)
@property
def content_length(self):
# Just a placeholder for adding setter
return super().content_length
@content_length.setter
def content_length(self, value):
if value is not None:
value = int(value)
if self._chunked:
raise RuntimeError("You can't set content length when "
"chunked encoding is enable")
self._headers[hdrs.CONTENT_LENGTH] = str(value)
else:
self._headers.pop(hdrs.CONTENT_LENGTH, None)
@property
def content_type(self):
# Just a placeholder for adding setter
return super().content_type
@content_type.setter
def content_type(self, value):
self.content_type # read header values if needed
self._content_type = str(value)
self._generate_content_type_header()
@property
def charset(self):
# Just a placeholder for adding setter
return super().charset
@charset.setter
def charset(self, value):
ctype = self.content_type # read header values if needed
if ctype == 'application/octet-stream':
raise RuntimeError("Setting charset for application/octet-stream "
"doesn't make sense, setup content_type first")
if value is None:
self._content_dict.pop('charset', None)
else:
self._content_dict['charset'] = str(value).lower()
self._generate_content_type_header()
@property
def last_modified(self, _LAST_MODIFIED=hdrs.LAST_MODIFIED):
"""The value of Last-Modified HTTP header, or None.
This header is represented as a `datetime` object.
"""
httpdate = self.headers.get(_LAST_MODIFIED)
if httpdate is not None:
timetuple = parsedate(httpdate)
if timetuple is not None:
return datetime.datetime(*timetuple[:6],
tzinfo=datetime.timezone.utc)
return None
@last_modified.setter
def last_modified(self, value):
if value is None:
self.headers.pop(hdrs.LAST_MODIFIED, None)
elif isinstance(value, (int, float)):
self.headers[hdrs.LAST_MODIFIED] = time.strftime(
"%a, %d %b %Y %H:%M:%S GMT", time.gmtime(math.ceil(value)))
elif isinstance(value, datetime.datetime):
self.headers[hdrs.LAST_MODIFIED] = time.strftime(
"%a, %d %b %Y %H:%M:%S GMT", value.utctimetuple())
elif isinstance(value, str):
self.headers[hdrs.LAST_MODIFIED] = value
def _generate_content_type_header(self, CONTENT_TYPE=hdrs.CONTENT_TYPE):
params = '; '.join("%s=%s" % i for i in self._content_dict.items())
if params:
ctype = self._content_type + '; ' + params
else:
ctype = self._content_type
self.headers[CONTENT_TYPE] = ctype
def _do_start_compression(self, coding):
if coding != ContentCoding.identity:
self.headers[hdrs.CONTENT_ENCODING] = coding.value
self._payload_writer.enable_compression(coding.value)
# Compressed payload may have different content length,
# remove the header
self._headers.popall(hdrs.CONTENT_LENGTH, None)
def _start_compression(self, request):
if self._compression_force:
self._do_start_compression(self._compression_force)
else:
accept_encoding = request.headers.get(hdrs.ACCEPT_ENCODING,
'').lower()
for coding in ContentCoding:
if coding.value in accept_encoding:
self._do_start_compression(coding)
return
async def prepare(self, request):
if self._eof_sent:
return
if self._payload_writer is not None:
return self._payload_writer
await request._prepare_hook(self)
return await self._start(request)
async def _start(self,
request,
HttpVersion10=HttpVersion10,
HttpVersion11=HttpVersion11,
CONNECTION=hdrs.CONNECTION,
DATE=hdrs.DATE,
SERVER=hdrs.SERVER,
CONTENT_TYPE=hdrs.CONTENT_TYPE,
CONTENT_LENGTH=hdrs.CONTENT_LENGTH,
SET_COOKIE=hdrs.SET_COOKIE,
SERVER_SOFTWARE=SERVER_SOFTWARE,
TRANSFER_ENCODING=hdrs.TRANSFER_ENCODING):
self._req = request
keep_alive = self._keep_alive
if keep_alive is None:
keep_alive = request.keep_alive
self._keep_alive = keep_alive
version = request.version
writer = self._payload_writer = request._payload_writer
headers = self._headers
for cookie in self._cookies.values():
value = cookie.output(header='')[1:]
headers.add(SET_COOKIE, value)
if self._compression:
self._start_compression(request)
if self._chunked:
if version != HttpVersion11:
raise RuntimeError("Using chunked encoding is forbidden "
"for HTTP/{0.major}.{0.minor}".format(
request.version))
writer.enable_chunking()
headers[TRANSFER_ENCODING] = 'chunked'
if CONTENT_LENGTH in headers:
del headers[CONTENT_LENGTH]
elif self._length_check:
writer.length = self.content_length
if writer.length is None:
if version >= HttpVersion11:
writer.enable_chunking()
headers[TRANSFER_ENCODING] = 'chunked'
if CONTENT_LENGTH in headers:
del headers[CONTENT_LENGTH]
else:
keep_alive = False
headers.setdefault(CONTENT_TYPE, 'application/octet-stream')
headers.setdefault(DATE, rfc822_formatted_time())
headers.setdefault(SERVER, SERVER_SOFTWARE)
# connection header
if CONNECTION not in headers:
if keep_alive:
if version == HttpVersion10:
headers[CONNECTION] = 'keep-alive'
else:
if version == HttpVersion11:
headers[CONNECTION] = 'close'
# status line
status_line = 'HTTP/{}.{} {} {}\r\n'.format(version[0], version[1],
self._status, self._reason)
await writer.write_headers(status_line, headers)
return writer
async def write(self, data):
assert isinstance(data, (bytes, bytearray, memoryview)), \
"data argument must be byte-ish (%r)" % type(data)
if self._eof_sent:
raise RuntimeError("Cannot call write() after write_eof()")
if self._payload_writer is None:
raise RuntimeError("Cannot call write() before prepare()")
await self._payload_writer.write(data)
async def drain(self):
assert not self._eof_sent, "EOF has already been sent"
assert self._payload_writer is not None, \
"Response has not been started"
warnings.warn("drain method is deprecated, use await resp.write()",
DeprecationWarning,
stacklevel=2)
await self._payload_writer.drain()
async def write_eof(self, data=b''):
assert isinstance(data, (bytes, bytearray, memoryview)), \
"data argument must be byte-ish (%r)" % type(data)
if self._eof_sent:
return
assert self._payload_writer is not None, \
"Response has not been started"
await self._payload_writer.write_eof(data)
self._eof_sent = True
self._req = None
self._body_length = self._payload_writer.output_size
self._payload_writer = None
def __repr__(self):
if self._eof_sent:
info = "eof"
elif self.prepared:
info = "{} {} ".format(self._req.method, self._req.path)
else:
info = "not prepared"
return "<{} {} {}>".format(self.__class__.__name__, self.reason, info)
def __getitem__(self, key):
return self._state[key]
def __setitem__(self, key, value):
self._state[key] = value
def __delitem__(self, key):
del self._state[key]
def __len__(self):
return len(self._state)
def __iter__(self):
return iter(self._state)
def __hash__(self):
return hash(id(self))
class StreamResponse(HeadersMixin):
def __init__(self, *, status=200, reason=None, headers=None):
self._body = None
self._keep_alive = None
self._chunked = False
self._chunk_size = None
self._compression = False
self._compression_force = False
self._headers = CIMultiDict()
self._cookies = SimpleCookie()
self.set_status(status, reason)
self._req = None
self._resp_impl = None
self._eof_sent = False
self._task = None
if headers is not None:
# TODO: optimize CIMultiDict extending
self._headers.extend(headers)
self._headers.setdefault(hdrs.CONTENT_TYPE, 'application/octet-stream')
@property
def prepared(self):
return self._resp_impl is not None
@property
def started(self):
warnings.warn('use Response.prepared instead', DeprecationWarning)
return self.prepared
@property
def task(self):
return self._task
@property
def status(self):
return self._status
@property
def chunked(self):
return self._chunked
@property
def compression(self):
return self._compression
@property
def reason(self):
return self._reason
def set_status(self, status, reason=None):
self._status = int(status)
if reason is None:
reason = ResponseImpl.calc_reason(status)
self._reason = reason
@property
def keep_alive(self):
return self._keep_alive
def force_close(self):
self._keep_alive = False
@property
def body_length(self):
return self._resp_impl.body_length
@property
def output_length(self):
return self._resp.impl.output_length
def enable_chunked_encoding(self, chunk_size=None):
"""Enables automatic chunked transfer encoding."""
self._chunked = True
self._chunk_size = chunk_size
def enable_compression(self, force=None):
"""Enables response compression encoding."""
# Backwards compatibility for when force was a bool <0.17.
if type(force) == bool:
force = ContentCoding.deflate if force else ContentCoding.identity
elif force is not None:
assert isinstance(force, ContentCoding), ("force should one of "
"None, bool or "
"ContentEncoding")
self._compression = True
self._compression_force = force
@property
def headers(self):
return self._headers
@property
def cookies(self):
return self._cookies
def set_cookie(self,
name,
value,
*,
expires=None,
domain=None,
max_age=None,
path='/',
secure=None,
httponly=None,
version=None):
"""Set or update response cookie.
Sets new cookie or updates existent with new value.
Also updates only those params which are not None.
"""
old = self._cookies.get(name)
if old is not None and old.coded_value == '':
# deleted cookie
self._cookies.pop(name, None)
self._cookies[name] = value
c = self._cookies[name]
if expires is not None:
c['expires'] = expires
elif c.get('expires') == 'Thu, 01 Jan 1970 00:00:00 GMT':
del c['expires']
if domain is not None:
c['domain'] = domain
if max_age is not None:
c['max-age'] = max_age
elif 'max-age' in c:
del c['max-age']
c['path'] = path
if secure is not None:
c['secure'] = secure
if httponly is not None:
c['httponly'] = httponly
if version is not None:
c['version'] = version
def del_cookie(self, name, *, domain=None, path='/'):
"""Delete cookie.
Creates new empty expired cookie.
"""
# TODO: do we need domain/path here?
self._cookies.pop(name, None)
self.set_cookie(name,
'',
max_age=0,
expires="Thu, 01 Jan 1970 00:00:00 GMT",
domain=domain,
path=path)
@property
def content_length(self):
# Just a placeholder for adding setter
return super().content_length
@content_length.setter
def content_length(self, value):
if value is not None:
value = int(value)
# TODO: raise error if chunked enabled
self.headers[hdrs.CONTENT_LENGTH] = str(value)
else:
self.headers.pop(hdrs.CONTENT_LENGTH, None)
@property
def content_type(self):
# Just a placeholder for adding setter
return super().content_type
@content_type.setter
def content_type(self, value):
self.content_type # read header values if needed
self._content_type = str(value)
self._generate_content_type_header()
@property
def charset(self):
# Just a placeholder for adding setter
return super().charset
@charset.setter
def charset(self, value):
ctype = self.content_type # read header values if needed
if ctype == 'application/octet-stream':
raise RuntimeError("Setting charset for application/octet-stream "
"doesn't make sense, setup content_type first")
if value is None:
self._content_dict.pop('charset', None)
else:
self._content_dict['charset'] = str(value).lower()
self._generate_content_type_header()
@property
def last_modified(self, _LAST_MODIFIED=hdrs.LAST_MODIFIED):
"""The value of Last-Modified HTTP header, or None.
This header is represented as a `datetime` object.
"""
httpdate = self.headers.get(_LAST_MODIFIED)
if httpdate is not None:
timetuple = parsedate(httpdate)
if timetuple is not None:
return datetime.datetime(*timetuple[:6],
tzinfo=datetime.timezone.utc)
return None
@last_modified.setter
def last_modified(self, value):
if value is None:
self.headers.pop(hdrs.LAST_MODIFIED, None)
elif isinstance(value, (int, float)):
self.headers[hdrs.LAST_MODIFIED] = time.strftime(
"%a, %d %b %Y %H:%M:%S GMT", time.gmtime(math.ceil(value)))
elif isinstance(value, datetime.datetime):
self.headers[hdrs.LAST_MODIFIED] = time.strftime(
"%a, %d %b %Y %H:%M:%S GMT", value.utctimetuple())
elif isinstance(value, str):
self.headers[hdrs.LAST_MODIFIED] = value
@property
def tcp_nodelay(self):
resp_impl = self._resp_impl
if resp_impl is None:
raise RuntimeError("Cannot get tcp_nodelay for "
"not prepared response")
return resp_impl.transport.tcp_nodelay
def set_tcp_nodelay(self, value):
resp_impl = self._resp_impl
if resp_impl is None:
raise RuntimeError("Cannot set tcp_nodelay for "
"not prepared response")
resp_impl.transport.set_tcp_nodelay(value)
@property
def tcp_cork(self):
resp_impl = self._resp_impl
if resp_impl is None:
raise RuntimeError("Cannot get tcp_cork for "
"not prepared response")
return resp_impl.transport.tcp_cork
def set_tcp_cork(self, value):
resp_impl = self._resp_impl
if resp_impl is None:
raise RuntimeError("Cannot set tcp_cork for "
"not prepared response")
resp_impl.transport.set_tcp_cork(value)
def _generate_content_type_header(self, CONTENT_TYPE=hdrs.CONTENT_TYPE):
params = '; '.join("%s=%s" % i for i in self._content_dict.items())
if params:
ctype = self._content_type + '; ' + params
else:
ctype = self._content_type
self.headers[CONTENT_TYPE] = ctype
def _start_pre_check(self, request):
if self._resp_impl is not None:
if self._req is not request:
raise RuntimeError(
"Response has been started with different request.")
else:
return self._resp_impl
else:
return None
def _do_start_compression(self, coding):
if coding != ContentCoding.identity:
self.headers[hdrs.CONTENT_ENCODING] = coding.value
self._resp_impl.add_compression_filter(coding.value)
self.content_length = None
def _start_compression(self, request):
if self._compression_force:
self._do_start_compression(self._compression_force)
else:
accept_encoding = request.headers.get(hdrs.ACCEPT_ENCODING,
'').lower()
for coding in ContentCoding:
if coding.value in accept_encoding:
self._do_start_compression(coding)
return
def start(self, request):
warnings.warn('use .prepare(request) instead', DeprecationWarning)
resp_impl = self._start_pre_check(request)
if resp_impl is not None:
return resp_impl
return self._start(request)
@asyncio.coroutine
def prepare(self, request):
resp_impl = self._start_pre_check(request)
if resp_impl is not None:
return resp_impl
yield from request._prepare_hook(self)
return self._start(request)
def _start(self,
request,
HttpVersion10=HttpVersion10,
HttpVersion11=HttpVersion11,
CONNECTION=hdrs.CONNECTION,
DATE=hdrs.DATE,
SERVER=hdrs.SERVER,
SET_COOKIE=hdrs.SET_COOKIE,
TRANSFER_ENCODING=hdrs.TRANSFER_ENCODING):
self._req = request
keep_alive = self._keep_alive
if keep_alive is None:
keep_alive = request.keep_alive
self._keep_alive = keep_alive
version = request.version
resp_impl = self._resp_impl = ResponseImpl(request._writer,
self._status, version,
not keep_alive,
self._reason)
headers = self.headers
for cookie in self._cookies.values():
value = cookie.output(header='')[1:]
headers.add(SET_COOKIE, value)
if self._compression:
self._start_compression(request)
if self._chunked:
if request.version != HttpVersion11:
raise RuntimeError("Using chunked encoding is forbidden "
"for HTTP/{0.major}.{0.minor}".format(
request.version))
resp_impl.chunked = True
if self._chunk_size:
resp_impl.add_chunking_filter(self._chunk_size)
headers[TRANSFER_ENCODING] = 'chunked'
else:
resp_impl.length = self.content_length
headers.setdefault(DATE, request._time_service.strtime())
headers.setdefault(SERVER, resp_impl.SERVER_SOFTWARE)
if CONNECTION not in headers:
if keep_alive:
if version == HttpVersion10:
headers[CONNECTION] = 'keep-alive'
else:
if version == HttpVersion11:
headers[CONNECTION] = 'close'
resp_impl.headers = headers
self._send_headers(resp_impl)
self._task = request._task
return resp_impl
def _send_headers(self, resp_impl):
# Durty hack required for
# https://github.com/KeepSafe/aiohttp/issues/1093
# File sender may override it
resp_impl.send_headers()
def write(self, data):
assert isinstance(data, (bytes, bytearray, memoryview)), \
"data argument must be byte-ish (%r)" % type(data)
if self._eof_sent:
raise RuntimeError("Cannot call write() after write_eof()")
if self._resp_impl is None:
raise RuntimeError("Cannot call write() before start()")
if data:
return self._resp_impl.write(data)
else:
return ()
@asyncio.coroutine
def drain(self):
if self._resp_impl is None:
raise RuntimeError("Response has not been started")
yield from self._resp_impl.transport.drain()
@asyncio.coroutine
def write_eof(self):
if self._eof_sent:
return
if self._resp_impl is None:
raise RuntimeError("Response has not been started")
yield from self._resp_impl.write_eof()
self._eof_sent = True
def __repr__(self):
if self.started:
info = "{} {} ".format(self._req.method, self._req.path)
else:
info = "not started"
return "<{} {} {}>".format(self.__class__.__name__, self.reason, info)
class StreamResponse(BaseClass, HeadersMixin):
_length_check = True
def __init__(self,
*,
status: int = 200,
reason: Optional[str] = None,
headers: Optional[LooseHeaders] = None) -> None:
self._body = None
self._keep_alive = None # type: Optional[bool]
self._chunked = False
self._compression = False
self._compression_force = None # type: Optional[ContentCoding]
self._cookies = SimpleCookie() # type: SimpleCookie[str]
self._req = None # type: Optional[BaseRequest]
self._payload_writer = None # type: Optional[AbstractStreamWriter]
self._eof_sent = False
self._body_length = 0
self._state = {} # type: Dict[str, Any]
if headers is not None:
self._headers = CIMultiDict(headers) # type: CIMultiDict[str]
else:
self._headers = CIMultiDict()
self.set_status(status, reason)
@property
def prepared(self) -> bool:
return self._payload_writer is not None
@property
def task(self) -> "asyncio.Task[None]":
return getattr(self._req, "task", None)
@property
def status(self) -> int:
return self._status
@property
def chunked(self) -> bool:
return self._chunked
@property
def compression(self) -> bool:
return self._compression
@property
def reason(self) -> str:
return self._reason
def set_status(
self,
status: int,
reason: Optional[str] = None,
_RESPONSES: Mapping[int, Tuple[str, str]] = RESPONSES,
) -> None:
assert not self.prepared, (
"Cannot change the response status code after "
"the headers have been sent")
self._status = int(status)
if reason is None:
try:
reason = _RESPONSES[self._status][0]
except Exception:
reason = ""
self._reason = reason
@property
def keep_alive(self) -> Optional[bool]:
return self._keep_alive
def force_close(self) -> None:
self._keep_alive = False
@property
def body_length(self) -> int:
return self._body_length
@property
def output_length(self) -> int:
warnings.warn("output_length is deprecated", DeprecationWarning)
assert self._payload_writer
return self._payload_writer.buffer_size
def enable_chunked_encoding(self,
chunk_size: Optional[int] = None) -> None:
"""Enables automatic chunked transfer encoding."""
self._chunked = True
if hdrs.CONTENT_LENGTH in self._headers:
raise RuntimeError("You can't enable chunked encoding when "
"a content length is set")
if chunk_size is not None:
warnings.warn("Chunk size is deprecated #1615", DeprecationWarning)
def enable_compression(self,
force: Optional[Union[bool, ContentCoding]] = None
) -> None:
"""Enables response compression encoding."""
# Backwards compatibility for when force was a bool <0.17.
if type(force) == bool:
force = ContentCoding.deflate if force else ContentCoding.identity
warnings.warn("Using boolean for force is deprecated #3318",
DeprecationWarning)
elif force is not None:
assert isinstance(force, ContentCoding), ("force should one of "
"None, bool or "
"ContentEncoding")
self._compression = True
self._compression_force = force
@property
def headers(self) -> "CIMultiDict[str]":
return self._headers
@property
def cookies(self) -> "SimpleCookie[str]":
return self._cookies
def set_cookie(self,
name: str,
value: str,
*,
expires: Optional[str] = None,
domain: Optional[str] = None,
max_age: Optional[Union[int, str]] = None,
path: str = "/",
secure: Optional[bool] = None,
httponly: Optional[bool] = None,
version: Optional[str] = None,
samesite: Optional[str] = None) -> None:
"""Set or update response cookie.
Sets new cookie or updates existent with new value.
Also updates only those params which are not None.
"""
old = self._cookies.get(name)
if old is not None and old.coded_value == "":
# deleted cookie
self._cookies.pop(name, None)
self._cookies[name] = value
c = self._cookies[name]
if expires is not None:
c["expires"] = expires
elif c.get("expires") == "Thu, 01 Jan 1970 00:00:00 GMT":
del c["expires"]
if domain is not None:
c["domain"] = domain
if max_age is not None:
c["max-age"] = str(max_age)
elif "max-age" in c:
del c["max-age"]
c["path"] = path
if secure is not None:
c["secure"] = secure
if httponly is not None:
c["httponly"] = httponly
if version is not None:
c["version"] = version
if samesite is not None:
c["samesite"] = samesite
def del_cookie(self,
name: str,
*,
domain: Optional[str] = None,
path: str = "/") -> None:
"""Delete cookie.
Creates new empty expired cookie.
"""
# TODO: do we need domain/path here?
self._cookies.pop(name, None)
self.set_cookie(
name,
"",
max_age=0,
expires="Thu, 01 Jan 1970 00:00:00 GMT",
domain=domain,
path=path,
)
@property
def content_length(self) -> Optional[int]:
# Just a placeholder for adding setter
return super().content_length
@content_length.setter
def content_length(self, value: Optional[int]) -> None:
if value is not None:
value = int(value)
if self._chunked:
raise RuntimeError("You can't set content length when "
"chunked encoding is enable")
self._headers[hdrs.CONTENT_LENGTH] = str(value)
else:
self._headers.pop(hdrs.CONTENT_LENGTH, None)
@property
def content_type(self) -> str:
# Just a placeholder for adding setter
return super().content_type
@content_type.setter
def content_type(self, value: str) -> None:
self.content_type # read header values if needed
self._content_type = str(value)
self._generate_content_type_header()
@property
def charset(self) -> Optional[str]:
# Just a placeholder for adding setter
return super().charset
@charset.setter
def charset(self, value: Optional[str]) -> None:
ctype = self.content_type # read header values if needed
if ctype == "application/octet-stream":
raise RuntimeError("Setting charset for application/octet-stream "
"doesn't make sense, setup content_type first")
assert self._content_dict is not None
if value is None:
self._content_dict.pop("charset", None)
else:
self._content_dict["charset"] = str(value).lower()
self._generate_content_type_header()
@property
def last_modified(self) -> Optional[datetime.datetime]:
"""The value of Last-Modified HTTP header, or None.
This header is represented as a `datetime` object.
"""
httpdate = self._headers.get(hdrs.LAST_MODIFIED)
if httpdate is not None:
timetuple = parsedate(httpdate)
if timetuple is not None:
return datetime.datetime(*timetuple[:6],
tzinfo=datetime.timezone.utc)
return None
@last_modified.setter
def last_modified(
self, value: Optional[Union[int, float, datetime.datetime,
str]]) -> None:
if value is None:
self._headers.pop(hdrs.LAST_MODIFIED, None)
elif isinstance(value, (int, float)):
self._headers[hdrs.LAST_MODIFIED] = time.strftime(
"%a, %d %b %Y %H:%M:%S GMT", time.gmtime(math.ceil(value)))
elif isinstance(value, datetime.datetime):
self._headers[hdrs.LAST_MODIFIED] = time.strftime(
"%a, %d %b %Y %H:%M:%S GMT", value.utctimetuple())
elif isinstance(value, str):
self._headers[hdrs.LAST_MODIFIED] = value
def _generate_content_type_header(self,
CONTENT_TYPE: istr = hdrs.CONTENT_TYPE
) -> None:
assert self._content_dict is not None
assert self._content_type is not None
params = "; ".join("{}={}".format(k, v)
for k, v in self._content_dict.items())
if params:
ctype = self._content_type + "; " + params
else:
ctype = self._content_type
self._headers[CONTENT_TYPE] = ctype
async def _do_start_compression(self, coding: ContentCoding) -> None:
if coding != ContentCoding.identity:
assert self._payload_writer is not None
self._headers[hdrs.CONTENT_ENCODING] = coding.value
self._payload_writer.enable_compression(coding.value)
# Compressed payload may have different content length,
# remove the header
self._headers.popall(hdrs.CONTENT_LENGTH, None)
async def _start_compression(self, request: "BaseRequest") -> None:
if self._compression_force:
await self._do_start_compression(self._compression_force)
else:
accept_encoding = request.headers.get(hdrs.ACCEPT_ENCODING,
"").lower()
for coding in ContentCoding:
if coding.value in accept_encoding:
await self._do_start_compression(coding)
return
async def prepare(
self, request: "BaseRequest") -> Optional[AbstractStreamWriter]:
if self._eof_sent:
return None
if self._payload_writer is not None:
return self._payload_writer
return await self._start(request)
async def _start(self, request: "BaseRequest") -> AbstractStreamWriter:
self._req = request
writer = self._payload_writer = request._payload_writer
await self._prepare_headers()
await request._prepare_hook(self)
await self._write_headers()
return writer
async def _prepare_headers(self) -> None:
request = self._req
assert request is not None
writer = self._payload_writer
assert writer is not None
keep_alive = self._keep_alive
if keep_alive is None:
keep_alive = request.keep_alive
self._keep_alive = keep_alive
version = request.version
headers = self._headers
for cookie in self._cookies.values():
value = cookie.output(header="")[1:]
headers.add(hdrs.SET_COOKIE, value)
if self._compression:
await self._start_compression(request)
if self._chunked:
if version != HttpVersion11:
raise RuntimeError("Using chunked encoding is forbidden "
"for HTTP/{0.major}.{0.minor}".format(
request.version))
writer.enable_chunking()
headers[hdrs.TRANSFER_ENCODING] = "chunked"
if hdrs.CONTENT_LENGTH in headers:
del headers[hdrs.CONTENT_LENGTH]
elif self._length_check:
writer.length = self.content_length
if writer.length is None:
if version >= HttpVersion11:
writer.enable_chunking()
headers[hdrs.TRANSFER_ENCODING] = "chunked"
if hdrs.CONTENT_LENGTH in headers:
del headers[hdrs.CONTENT_LENGTH]
else:
keep_alive = False
# HTTP 1.1: https://tools.ietf.org/html/rfc7230#section-3.3.2
# HTTP 1.0: https://tools.ietf.org/html/rfc1945#section-10.4
elif version >= HttpVersion11 and self.status in (100, 101, 102,
103, 204):
del headers[hdrs.CONTENT_LENGTH]
headers.setdefault(hdrs.CONTENT_TYPE, "application/octet-stream")
headers.setdefault(hdrs.DATE, rfc822_formatted_time())
headers.setdefault(hdrs.SERVER, SERVER_SOFTWARE)
# connection header
if hdrs.CONNECTION not in headers:
if keep_alive:
if version == HttpVersion10:
headers[hdrs.CONNECTION] = "keep-alive"
else:
if version == HttpVersion11:
headers[hdrs.CONNECTION] = "close"
async def _write_headers(self) -> None:
request = self._req
assert request is not None
writer = self._payload_writer
assert writer is not None
# status line
version = request.version
status_line = "HTTP/{}.{} {} {}".format(version[0], version[1],
self._status, self._reason)
await writer.write_headers(status_line, self._headers)
async def write(self, data: bytes) -> None:
assert isinstance(
data,
(bytes, bytearray,
memoryview)), "data argument must be byte-ish (%r)" % type(data)
if self._eof_sent:
raise RuntimeError("Cannot call write() after write_eof()")
if self._payload_writer is None:
raise RuntimeError("Cannot call write() before prepare()")
await self._payload_writer.write(data)
async def drain(self) -> None:
assert not self._eof_sent, "EOF has already been sent"
assert self._payload_writer is not None, "Response has not been started"
warnings.warn(
"drain method is deprecated, use await resp.write()",
DeprecationWarning,
stacklevel=2,
)
await self._payload_writer.drain()
async def write_eof(self, data: bytes = b"") -> None:
assert isinstance(
data,
(bytes, bytearray,
memoryview)), "data argument must be byte-ish (%r)" % type(data)
if self._eof_sent:
return
assert self._payload_writer is not None, "Response has not been started"
await self._payload_writer.write_eof(data)
self._eof_sent = True
self._req = None
self._body_length = self._payload_writer.output_size
self._payload_writer = None
def __repr__(self) -> str:
if self._eof_sent:
info = "eof"
elif self.prepared:
assert self._req is not None
info = "{} {} ".format(self._req.method, self._req.path)
else:
info = "not prepared"
return "<{} {} {}>".format(self.__class__.__name__, self.reason, info)
def __getitem__(self, key: str) -> Any:
return self._state[key]
def __setitem__(self, key: str, value: Any) -> None:
self._state[key] = value
def __delitem__(self, key: str) -> None:
del self._state[key]
def __len__(self) -> int:
return len(self._state)
def __iter__(self) -> Iterator[str]:
return iter(self._state)
def __hash__(self) -> int:
return hash(id(self))
def __eq__(self, other: object) -> bool:
return self is other
class StreamResponse(HeadersMixin):
def __init__(self, *, status=200, reason=None, headers=None):
self._body = None
self._keep_alive = None
self._chunked = False
self._chunk_size = None
self._compression = False
self._compression_force = False
self._headers = CIMultiDict()
self._cookies = SimpleCookie()
self._req = None
self._resp_impl = None
self._eof_sent = False
self._task = None
if headers is not None:
# TODO: optimize CIMultiDict extending
self._headers.extend(headers)
self._headers.setdefault(hdrs.CONTENT_TYPE, 'application/octet-stream')
self.set_status(status, reason)
@property
def prepared(self):
return self._resp_impl is not None
@property
def started(self):
warnings.warn('use Response.prepared instead', DeprecationWarning)
return self.prepared
@property
def task(self):
return self._task
@property
def status(self):
return self._status
@property
def chunked(self):
return self._chunked
@property
def compression(self):
return self._compression
@property
def reason(self):
return self._reason
def set_status(self, status, reason=None):
if self.prepared:
raise RuntimeError("Cannot change the response status code after "
"the headers have been sent")
self._status = int(status)
if reason is None:
reason = ResponseImpl.calc_reason(status)
self._reason = reason
@property
def keep_alive(self):
return self._keep_alive
def force_close(self):
self._keep_alive = False
@property
def body_length(self):
return self._resp_impl.body_length
@property
def output_length(self):
return self._resp_impl.output_length
def enable_chunked_encoding(self, chunk_size=None):
"""Enables automatic chunked transfer encoding."""
self._chunked = True
self._chunk_size = chunk_size
def enable_compression(self, force=None):
"""Enables response compression encoding."""
# Backwards compatibility for when force was a bool <0.17.
if type(force) == bool:
force = ContentCoding.deflate if force else ContentCoding.identity
elif force is not None:
assert isinstance(force, ContentCoding), ("force should one of "
"None, bool or "
"ContentEncoding")
self._compression = True
self._compression_force = force
@property
def headers(self):
return self._headers
@property
def cookies(self):
return self._cookies
def set_cookie(self, name, value, *, expires=None,
domain=None, max_age=None, path='/',
secure=None, httponly=None, version=None):
"""Set or update response cookie.
Sets new cookie or updates existent with new value.
Also updates only those params which are not None.
"""
old = self._cookies.get(name)
if old is not None and old.coded_value == '':
# deleted cookie
self._cookies.pop(name, None)
self._cookies[name] = value
c = self._cookies[name]
if expires is not None:
c['expires'] = expires
elif c.get('expires') == 'Thu, 01 Jan 1970 00:00:00 GMT':
del c['expires']
if domain is not None:
c['domain'] = domain
if max_age is not None:
c['max-age'] = max_age
elif 'max-age' in c:
del c['max-age']
c['path'] = path
if secure is not None:
c['secure'] = secure
if httponly is not None:
c['httponly'] = httponly
if version is not None:
c['version'] = version
def del_cookie(self, name, *, domain=None, path='/'):
"""Delete cookie.
Creates new empty expired cookie.
"""
# TODO: do we need domain/path here?
self._cookies.pop(name, None)
self.set_cookie(name, '', max_age=0,
expires="Thu, 01 Jan 1970 00:00:00 GMT",
domain=domain, path=path)
@property
def content_length(self):
# Just a placeholder for adding setter
return super().content_length
@content_length.setter
def content_length(self, value):
if value is not None:
value = int(value)
# TODO: raise error if chunked enabled
self.headers[hdrs.CONTENT_LENGTH] = str(value)
else:
self.headers.pop(hdrs.CONTENT_LENGTH, None)
@property
def content_type(self):
# Just a placeholder for adding setter
return super().content_type
@content_type.setter
def content_type(self, value):
self.content_type # read header values if needed
self._content_type = str(value)
self._generate_content_type_header()
@property
def charset(self):
# Just a placeholder for adding setter
return super().charset
@charset.setter
def charset(self, value):
ctype = self.content_type # read header values if needed
if ctype == 'application/octet-stream':
raise RuntimeError("Setting charset for application/octet-stream "
"doesn't make sense, setup content_type first")
if value is None:
self._content_dict.pop('charset', None)
else:
self._content_dict['charset'] = str(value).lower()
self._generate_content_type_header()
@property
def last_modified(self, _LAST_MODIFIED=hdrs.LAST_MODIFIED):
"""The value of Last-Modified HTTP header, or None.
This header is represented as a `datetime` object.
"""
httpdate = self.headers.get(_LAST_MODIFIED)
if httpdate is not None:
timetuple = parsedate(httpdate)
if timetuple is not None:
return datetime.datetime(*timetuple[:6],
tzinfo=datetime.timezone.utc)
return None
@last_modified.setter
def last_modified(self, value):
if value is None:
self.headers.pop(hdrs.LAST_MODIFIED, None)
elif isinstance(value, (int, float)):
self.headers[hdrs.LAST_MODIFIED] = time.strftime(
"%a, %d %b %Y %H:%M:%S GMT", time.gmtime(math.ceil(value)))
elif isinstance(value, datetime.datetime):
self.headers[hdrs.LAST_MODIFIED] = time.strftime(
"%a, %d %b %Y %H:%M:%S GMT", value.utctimetuple())
elif isinstance(value, str):
self.headers[hdrs.LAST_MODIFIED] = value
@property
def tcp_nodelay(self):
resp_impl = self._resp_impl
if resp_impl is None:
raise RuntimeError("Cannot get tcp_nodelay for "
"not prepared response")
return resp_impl.transport.tcp_nodelay
def set_tcp_nodelay(self, value):
resp_impl = self._resp_impl
if resp_impl is None:
raise RuntimeError("Cannot set tcp_nodelay for "
"not prepared response")
resp_impl.transport.set_tcp_nodelay(value)
@property
def tcp_cork(self):
resp_impl = self._resp_impl
if resp_impl is None:
raise RuntimeError("Cannot get tcp_cork for "
"not prepared response")
return resp_impl.transport.tcp_cork
def set_tcp_cork(self, value):
resp_impl = self._resp_impl
if resp_impl is None:
raise RuntimeError("Cannot set tcp_cork for "
"not prepared response")
resp_impl.transport.set_tcp_cork(value)
def _generate_content_type_header(self, CONTENT_TYPE=hdrs.CONTENT_TYPE):
params = '; '.join("%s=%s" % i for i in self._content_dict.items())
if params:
ctype = self._content_type + '; ' + params
else:
ctype = self._content_type
self.headers[CONTENT_TYPE] = ctype
def _start_pre_check(self, request):
if self._resp_impl is not None:
if self._req is not request:
raise RuntimeError(
"Response has been started with different request.")
else:
return self._resp_impl
else:
return None
def _do_start_compression(self, coding):
if coding != ContentCoding.identity:
self.headers[hdrs.CONTENT_ENCODING] = coding.value
self._resp_impl.add_compression_filter(coding.value)
self.content_length = None
def _start_compression(self, request):
if self._compression_force:
self._do_start_compression(self._compression_force)
else:
accept_encoding = request.headers.get(
hdrs.ACCEPT_ENCODING, '').lower()
for coding in ContentCoding:
if coding.value in accept_encoding:
self._do_start_compression(coding)
return
def start(self, request):
warnings.warn('use .prepare(request) instead', DeprecationWarning)
resp_impl = self._start_pre_check(request)
if resp_impl is not None:
return resp_impl
return self._start(request)
@asyncio.coroutine
def prepare(self, request):
resp_impl = self._start_pre_check(request)
if resp_impl is not None:
return resp_impl
yield from request._prepare_hook(self)
return self._start(request)
def _start(self, request,
HttpVersion10=HttpVersion10,
HttpVersion11=HttpVersion11,
CONNECTION=hdrs.CONNECTION,
DATE=hdrs.DATE,
SERVER=hdrs.SERVER,
SET_COOKIE=hdrs.SET_COOKIE,
TRANSFER_ENCODING=hdrs.TRANSFER_ENCODING):
self._req = request
keep_alive = self._keep_alive
if keep_alive is None:
keep_alive = request.keep_alive
self._keep_alive = keep_alive
version = request.version
resp_impl = self._resp_impl = ResponseImpl(
request._writer,
self._status,
version,
not keep_alive,
self._reason)
headers = self.headers
for cookie in self._cookies.values():
value = cookie.output(header='')[1:]
headers.add(SET_COOKIE, value)
if self._compression:
self._start_compression(request)
if self._chunked:
if request.version != HttpVersion11:
raise RuntimeError("Using chunked encoding is forbidden "
"for HTTP/{0.major}.{0.minor}".format(
request.version))
resp_impl.chunked = True
if self._chunk_size:
resp_impl.add_chunking_filter(self._chunk_size)
headers[TRANSFER_ENCODING] = 'chunked'
else:
resp_impl.length = self.content_length
headers.setdefault(DATE, request.time_service.strtime())
headers.setdefault(SERVER, resp_impl.SERVER_SOFTWARE)
if CONNECTION not in headers:
if keep_alive:
if version == HttpVersion10:
headers[CONNECTION] = 'keep-alive'
else:
if version == HttpVersion11:
headers[CONNECTION] = 'close'
resp_impl.headers = headers
self._send_headers(resp_impl)
self._task = request._task
return resp_impl
def _send_headers(self, resp_impl):
# Durty hack required for
# https://github.com/KeepSafe/aiohttp/issues/1093
# File sender may override it
resp_impl.send_headers()
def write(self, data):
assert isinstance(data, (bytes, bytearray, memoryview)), \
"data argument must be byte-ish (%r)" % type(data)
if self._eof_sent:
raise RuntimeError("Cannot call write() after write_eof()")
if self._resp_impl is None:
raise RuntimeError("Cannot call write() before start()")
if data:
return self._resp_impl.write(data)
else:
return ()
@asyncio.coroutine
def drain(self):
if self._resp_impl is None:
raise RuntimeError("Response has not been started")
yield from self._resp_impl.transport.drain()
@asyncio.coroutine
def write_eof(self):
if self._eof_sent:
return
if self._resp_impl is None:
raise RuntimeError("Response has not been started")
yield from self._resp_impl.write_eof()
self._eof_sent = True
def __repr__(self):
if self.started:
info = "{} {} ".format(self._req.method, self._req.path)
else:
info = "not started"
return "<{} {} {}>".format(self.__class__.__name__,
self.reason, info)
class StreamResponse(BaseClass, HeadersMixin):
__slots__ = ('_length_check', '_body', '_keep_alive', '_chunked',
'_compression', '_compression_force', '_cookies', '_req',
'_payload_writer', '_eof_sent', '_body_length', '_state',
'_headers', '_status', '_reason', '__weakref__')
def __init__(self,
*,
status: int = 200,
reason: Optional[str] = None,
headers: Optional[LooseHeaders] = None) -> None:
super().__init__()
self._length_check = True
self._body = None
self._keep_alive = None # type: Optional[bool]
self._chunked = False
self._compression = False
self._compression_force = None # type: Optional[ContentCoding]
self._cookies = SimpleCookie() # type: SimpleCookie[str]
self._req = None # type: Optional[BaseRequest]
self._payload_writer = None # type: Optional[AbstractStreamWriter]
self._eof_sent = False
self._body_length = 0
self._state = {} # type: Dict[str, Any]
if headers is not None:
self._headers = CIMultiDict(headers) # type: CIMultiDict[str]
else:
self._headers = CIMultiDict()
self.set_status(status, reason)
@property
def prepared(self) -> bool:
return self._payload_writer is not None
@property
def task(self) -> 'asyncio.Task[None]':
return getattr(self._req, 'task', None)
@property
def status(self) -> int:
return self._status
@property
def chunked(self) -> bool:
return self._chunked
@property
def compression(self) -> bool:
return self._compression
@property
def reason(self) -> str:
return self._reason
def set_status(
self,
status: int,
reason: Optional[str] = None,
_RESPONSES: Mapping[int, Tuple[str, str]] = RESPONSES) -> None:
assert not self.prepared, \
'Cannot change the response status code after ' \
'the headers have been sent'
self._status = int(status)
if reason is None:
try:
reason = _RESPONSES[self._status][0]
except Exception:
reason = ''
self._reason = reason
@property
def keep_alive(self) -> Optional[bool]:
return self._keep_alive
def force_close(self) -> None:
self._keep_alive = False
@property
def body_length(self) -> int:
return self._body_length
def enable_chunked_encoding(self) -> None:
"""Enables automatic chunked transfer encoding."""
self._chunked = True
if hdrs.CONTENT_LENGTH in self._headers:
raise RuntimeError("You can't enable chunked encoding when "
"a content length is set")
def enable_compression(self,
force: Optional[ContentCoding] = None) -> None:
"""Enables response compression encoding."""
# Backwards compatibility for when force was a bool <0.17.
self._compression = True
self._compression_force = force
@property
def headers(self) -> 'CIMultiDict[str]':
return self._headers
@property
def cookies(self) -> 'SimpleCookie[str]':
return self._cookies
def set_cookie(self,
name: str,
value: str,
*,
expires: Optional[str] = None,
domain: Optional[str] = None,
max_age: Optional[Union[int, str]] = None,
path: str = '/',
secure: Optional[bool] = None,
httponly: Optional[bool] = None,
version: Optional[str] = None,
samesite: Optional[str] = None) -> None:
"""Set or update response cookie.
Sets new cookie or updates existent with new value.
Also updates only those params which are not None.
"""
old = self._cookies.get(name)
if old is not None and old.coded_value == '':
# deleted cookie
self._cookies.pop(name, None)
self._cookies[name] = value
c = self._cookies[name]
if expires is not None:
c['expires'] = expires
elif c.get('expires') == 'Thu, 01 Jan 1970 00:00:00 GMT':
del c['expires']
if domain is not None:
c['domain'] = domain
if max_age is not None:
c['max-age'] = str(max_age)
elif 'max-age' in c:
del c['max-age']
c['path'] = path
if secure is not None:
c['secure'] = secure
if httponly is not None:
c['httponly'] = httponly
if version is not None:
c['version'] = version
if samesite is not None:
c['samesite'] = samesite
def del_cookie(self,
name: str,
*,
domain: Optional[str] = None,
path: str = '/') -> None:
"""Delete cookie.
Creates new empty expired cookie.
"""
# TODO: do we need domain/path here?
self._cookies.pop(name, None)
self.set_cookie(name,
'',
max_age=0,
expires="Thu, 01 Jan 1970 00:00:00 GMT",
domain=domain,
path=path)
@property
def content_length(self) -> Optional[int]:
# Just a placeholder for adding setter
return super().content_length
@content_length.setter
def content_length(self, value: Optional[int]) -> None:
if value is not None:
value = int(value)
if self._chunked:
raise RuntimeError("You can't set content length when "
"chunked encoding is enable")
self._headers[hdrs.CONTENT_LENGTH] = str(value)
else:
self._headers.pop(hdrs.CONTENT_LENGTH, None)
@property
def content_type(self) -> str:
# Just a placeholder for adding setter
return super().content_type
@content_type.setter
def content_type(self, value: str) -> None:
self.content_type # read header values if needed
self._content_type = str(value)
self._generate_content_type_header()
@property
def charset(self) -> Optional[str]:
# Just a placeholder for adding setter
return super().charset
@charset.setter
def charset(self, value: Optional[str]) -> None:
ctype = self.content_type # read header values if needed
if ctype == 'application/octet-stream':
raise RuntimeError("Setting charset for application/octet-stream "
"doesn't make sense, setup content_type first")
assert self._content_dict is not None
if value is None:
self._content_dict.pop('charset', None)
else:
self._content_dict['charset'] = str(value).lower()
self._generate_content_type_header()
@property
def last_modified(self) -> Optional[datetime.datetime]:
"""The value of Last-Modified HTTP header, or None.
This header is represented as a `datetime` object.
"""
httpdate = self._headers.get(hdrs.LAST_MODIFIED)
if httpdate is not None:
timetuple = parsedate(httpdate)
if timetuple is not None:
return datetime.datetime(*timetuple[:6],
tzinfo=datetime.timezone.utc)
return None
@last_modified.setter
def last_modified(
self, value: Optional[Union[int, float, datetime.datetime,
str]]) -> None:
if value is None:
self._headers.pop(hdrs.LAST_MODIFIED, None)
elif isinstance(value, (int, float)):
self._headers[hdrs.LAST_MODIFIED] = time.strftime(
"%a, %d %b %Y %H:%M:%S GMT", time.gmtime(math.ceil(value)))
elif isinstance(value, datetime.datetime):
self._headers[hdrs.LAST_MODIFIED] = time.strftime(
"%a, %d %b %Y %H:%M:%S GMT", value.utctimetuple())
elif isinstance(value, str):
self._headers[hdrs.LAST_MODIFIED] = value
def _generate_content_type_header(self,
CONTENT_TYPE: istr = hdrs.CONTENT_TYPE
) -> None:
assert self._content_dict is not None
assert self._content_type is not None
params = '; '.join("{}={}".format(k, v)
for k, v in self._content_dict.items())
if params:
ctype = self._content_type + '; ' + params
else:
ctype = self._content_type
self._headers[CONTENT_TYPE] = ctype
async def _do_start_compression(self, coding: ContentCoding) -> None:
if coding != ContentCoding.identity:
assert self._payload_writer is not None
self._headers[hdrs.CONTENT_ENCODING] = coding.value
self._payload_writer.enable_compression(coding.value)
# Compressed payload may have different content length,
# remove the header
self._headers.popall(hdrs.CONTENT_LENGTH, None)
async def _start_compression(self, request: 'BaseRequest') -> None:
if self._compression_force:
await self._do_start_compression(self._compression_force)
else:
accept_encoding = request.headers.get(hdrs.ACCEPT_ENCODING,
'').lower()
for coding in ContentCoding:
if coding.value in accept_encoding:
await self._do_start_compression(coding)
return
async def prepare(
self, request: 'BaseRequest') -> Optional[AbstractStreamWriter]:
if self._eof_sent:
return None
if self._payload_writer is not None:
return self._payload_writer
await request._prepare_hook(self)
return await self._start(request)
async def _start(self, request: 'BaseRequest') -> AbstractStreamWriter:
self._req = request
keep_alive = self._keep_alive
if keep_alive is None:
keep_alive = request.keep_alive
self._keep_alive = keep_alive
version = request.version
writer = self._payload_writer = request._payload_writer
headers = self._headers
for cookie in self._cookies.values():
value = cookie.output(header='')[1:]
headers.add(hdrs.SET_COOKIE, value)
if self._compression:
await self._start_compression(request)
if self._chunked:
if version != HttpVersion11:
raise RuntimeError("Using chunked encoding is forbidden "
"for HTTP/{0.major}.{0.minor}".format(
request.version))
writer.enable_chunking()
headers[hdrs.TRANSFER_ENCODING] = 'chunked'
if hdrs.CONTENT_LENGTH in headers:
del headers[hdrs.CONTENT_LENGTH]
elif self._length_check:
writer.length = self.content_length
if writer.length is None:
if version >= HttpVersion11:
writer.enable_chunking()
headers[hdrs.TRANSFER_ENCODING] = 'chunked'
if hdrs.CONTENT_LENGTH in headers:
del headers[hdrs.CONTENT_LENGTH]
else:
keep_alive = False
headers.setdefault(hdrs.CONTENT_TYPE, 'application/octet-stream')
headers.setdefault(hdrs.DATE, rfc822_formatted_time())
headers.setdefault(hdrs.SERVER, 'nginx')
# connection header
if hdrs.CONNECTION not in headers:
if keep_alive:
if version == HttpVersion10:
headers[hdrs.CONNECTION] = 'keep-alive'
else:
if version == HttpVersion11:
headers[hdrs.CONNECTION] = 'close'
# status line
status_line = 'HTTP/{}.{} {} {}'.format(version[0], version[1],
self._status, self._reason)
await writer.write_headers(status_line, headers)
return writer
async def write(self, data: bytes) -> None:
assert isinstance(data, (bytes, bytearray, memoryview)), \
"data argument must be byte-ish (%r)" % type(data)
if self._eof_sent:
raise RuntimeError("Cannot call write() after write_eof()")
if self._payload_writer is None:
raise RuntimeError("Cannot call write() before prepare()")
await self._payload_writer.write(data)
async def drain(self) -> None:
assert not self._eof_sent, "EOF has already been sent"
assert self._payload_writer is not None, \
"Response has not been started"
warnings.warn("drain method is deprecated, use await resp.write()",
DeprecationWarning,
stacklevel=2)
await self._payload_writer.drain()
async def write_eof(self, data: bytes = b'') -> None:
assert isinstance(data, (bytes, bytearray, memoryview)), \
"data argument must be byte-ish (%r)" % type(data)
if self._eof_sent:
return
assert self._payload_writer is not None, \
"Response has not been started"
await self._payload_writer.write_eof(data)
self._eof_sent = True
self._req = None
self._body_length = self._payload_writer.output_size
self._payload_writer = None
def __repr__(self) -> str:
if self._eof_sent:
info = "eof"
elif self.prepared:
assert self._req is not None
info = "{} {} ".format(self._req.method, self._req.path)
else:
info = "not prepared"
return "<{} {} {}>".format(self.__class__.__name__, self.reason, info)
def __getitem__(self, key: str) -> Any:
return self._state[key]
def __setitem__(self, key: str, value: Any) -> None:
self._state[key] = value
def __delitem__(self, key: str) -> None:
del self._state[key]
def __len__(self) -> int:
return len(self._state)
def __iter__(self) -> Iterator[str]:
return iter(self._state)
def __hash__(self) -> int:
return hash(id(self))
def __eq__(self, other: object) -> bool:
return self is other
