def doConnect(self):
"""I connect the socket.
Then, call the protocol's makeConnection, and start waiting for data.
"""
if not hasattr(self, "connector"):
# this happens when connection failed but doConnect
# was scheduled via a callLater in self._finishInit
return
err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
if err:
self.failIfNotConnected(error.getConnectError(
(err, strerror(err))))
return
# doConnect gets called twice. The first time we actually need to
# start the connection attempt. The second time we don't really
# want to (SO_ERROR above will have taken care of any errors, and if
# it reported none, the mere fact that doConnect was called again is
# sufficient to indicate that the connection has succeeded), but it
# is not /particularly/ detrimental to do so. This should get
# cleaned up some day, though.
try:
connectResult = self.socket.connect_ex(self.realAddress)
except socket.error, se:
connectResult = se.args[0]
def doConnect(self):
"""I connect the socket.
Then, call the protocol's makeConnection, and start waiting for data.
"""
if not hasattr(self, "connector"):
# this happens when connection failed but doConnect
# was scheduled via a callLater in self._finishInit
return
err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
if err:
self.failIfNotConnected(error.getConnectError((err, strerror(err))))
return
# doConnect gets called twice. The first time we actually need to
# start the connection attempt. The second time we don't really
# want to (SO_ERROR above will have taken care of any errors, and if
# it reported none, the mere fact that doConnect was called again is
# sufficient to indicate that the connection has succeeded), but it
# is not /particularly/ detrimental to do so. This should get
# cleaned up some day, though.
try:
connectResult = self.socket.connect_ex(self.realAddress)
except socket.error, se:
connectResult = se.args[0]
def cbConnect(self, rc, bytes, evt):
if rc:
rc = connectExErrors.get(rc, rc)
self.failIfNotConnected(error.getConnectError((rc,
errno.errorcode.get(rc, 'Unknown error'))))
else:
self.socket.setsockopt(socket.SOL_SOCKET,
SO_UPDATE_CONNECT_CONTEXT,
struct.pack('I', self.socket.fileno()))
self.protocol = self.connector.buildProtocol(self.getPeer())
self.connected = True
self.logstr = self.protocol.__class__.__name__+",client"
self.protocol.makeConnection(self)
self.startReading()
def cbConnect(self, rc, bytes, evt):
if rc:
rc = connectExErrors.get(rc, rc)
self.failIfNotConnected(
error.getConnectError(
(rc, errno.errorcode.get(rc, 'Unknown error'))))
else:
self.socket.setsockopt(socket.SOL_SOCKET,
SO_UPDATE_CONNECT_CONTEXT,
struct.pack('I', self.socket.fileno()))
self.protocol = self.connector.buildProtocol(self.getPeer())
self.connected = True
self.logstr = self.protocol.__class__.__name__ + ",client"
self.protocol.makeConnection(self)
self.startReading()
class BaseClient(Connection):
"""A base class for client TCP (and similiar) sockets.
"""
addressFamily = socket.AF_INET
socketType = socket.SOCK_STREAM
def _finishInit(self, whenDone, skt, error, reactor):
"""Called by base classes to continue to next stage of initialization."""
if whenDone:
Connection.__init__(self, skt, None, reactor)
self.doWrite = self.doConnect
self.doRead = self.doConnect
reactor.callLater(0, whenDone)
else:
reactor.callLater(0, self.failIfNotConnected, error)
def startTLS(self, ctx, client=1):
if Connection.startTLS(self, ctx, client):
if client:
self.socket.set_connect_state()
else:
self.socket.set_accept_state()
def stopConnecting(self):
"""Stop attempt to connect."""
self.failIfNotConnected(error.UserError())
def failIfNotConnected(self, err):
"""
Generic method called when the attemps to connect failed. It basically
cleans everything it can: call connectionFailed, stop read and write,
delete socket related members.
"""
if (self.connected or self.disconnected
or not hasattr(self, "connector")):
return
self.connector.connectionFailed(failure.Failure(err))
if hasattr(self, "reactor"):
# this doesn't happen if we failed in __init__
self.stopReading()
self.stopWriting()
del self.connector
try:
self._closeSocket()
except AttributeError:
pass
else:
del self.socket, self.fileno
def createInternetSocket(self):
"""(internal) Create a non-blocking socket using
self.addressFamily, self.socketType.
"""
s = socket.socket(self.addressFamily, self.socketType)
s.setblocking(0)
fdesc._setCloseOnExec(s.fileno())
return s
def resolveAddress(self):
if abstract.isIPAddress(self.addr[0]):
self._setRealAddress(self.addr[0])
else:
d = self.reactor.resolve(self.addr[0])
d.addCallbacks(self._setRealAddress, self.failIfNotConnected)
def _setRealAddress(self, address):
self.realAddress = (address, self.addr[1])
self.doConnect()
def doConnect(self):
"""I connect the socket.
Then, call the protocol's makeConnection, and start waiting for data.
"""
if not hasattr(self, "connector"):
# this happens when connection failed but doConnect
# was scheduled via a callLater in self._finishInit
return
err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
if err:
self.failIfNotConnected(error.getConnectError(
(err, strerror(err))))
return
# doConnect gets called twice. The first time we actually need to
# start the connection attempt. The second time we don't really
# want to (SO_ERROR above will have taken care of any errors, and if
# it reported none, the mere fact that doConnect was called again is
# sufficient to indicate that the connection has succeeded), but it
# is not /particularly/ detrimental to do so. This should get
# cleaned up some day, though.
try:
connectResult = self.socket.connect_ex(self.realAddress)
except socket.error, se:
connectResult = se.args[0]
if connectResult:
if connectResult == EISCONN:
pass
# on Windows EINVAL means sometimes that we should keep trying:
# http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winsock/winsock/connect_2.asp
elif ((connectResult in (EWOULDBLOCK, EINPROGRESS, EALREADY))
or (connectResult == EINVAL and platformType == "win32")):
self.startReading()
self.startWriting()
return
else:
self.failIfNotConnected(
error.getConnectError(
(connectResult, strerror(connectResult))))
return
# If I have reached this point without raising or returning, that means
# that the socket is connected.
del self.doWrite
del self.doRead
# we first stop and then start, to reset any references to the old doRead
self.stopReading()
self.stopWriting()
self._connectDone()