def do_run(self):
pipe_handle = None
while not self.exit_loop:
if not pipe_handle:
try:
pipe_handle = self.CreatePipeHandle()
except Exception as e:
log("CreatePipeHandle()", exc_info=True)
log.error("Error: failed to create named pipe")
log.error(" at path '%s'", self.pipe_name)
log.error(" %s", e)
return
log("CreatePipeHandle()=%#x", pipe_handle)
if c_long(pipe_handle).value==INVALID_HANDLE_VALUE:
log.error("Error: invalid handle for named pipe '%s'", self.pipe_name)
e = GetLastError()
log.error(" '%s' (%i)", FormatMessageSystem(e).rstrip("\n\r."), e)
return
event = CreateEventA(None, True, False, None)
overlapped = OVERLAPPED()
overlapped.hEvent = event
overlapped.Internal = None
overlapped.InternalHigh = None
overlapped.union.Pointer = None
r = ConnectNamedPipe(pipe_handle, overlapped)
log("ConnectNamedPipe()=%s", r)
if self.exit_loop:
break
if r==0:
e = GetLastError()
log("GetLastError()=%s (%i)", FormatMessageSystem(e).rstrip("\n\r"), e)
if e==ERROR_PIPE_CONNECTED:
pass
elif e==ERROR_IO_PENDING:
while not self.exit_loop:
r = WaitForSingleObject(event, INFINITE)
log("WaitForSingleObject(..)=%s", WAIT_STR.get(r, r))
if r==WAIT_TIMEOUT:
continue
if r==0:
break
log.error("Error: cannot connect to named pipe '%s'", self.pipe_name)
log.error(" %s", WAIT_STR.get(r, r))
CloseHandle(pipe_handle)
pipe_handle = None
break
else:
log.error("Error: cannot connect to named pipe '%s'", self.pipe_name)
log.error(" error %s", e)
CloseHandle(pipe_handle)
pipe_handle = None
if self.exit_loop:
break
#from now on, the pipe_handle will be managed elsewhere:
if pipe_handle:
self.new_connection_cb("named-pipe", self, pipe_handle)
pipe_handle = None
if pipe_handle:
self.close_handle(pipe_handle)
def __init__(self, name, pipe_handle):
log("NamedPipeConnection(%s, %#x)", name, pipe_handle)
Connection.__init__(self, name, "named-pipe")
self.pipe_handle = pipe_handle
self.read_buffer = (c_char * BUFSIZE)()
self.read_buffer_ptr = cast(addressof(self.read_buffer), c_void_p)
self.read_event = CreateEventA(None, True, False, None)
self.read_overlapped = OVERLAPPED()
self.read_overlapped.hEvent = self.read_event
self.read_overlapped.Internal = None
self.read_overlapped.InternalHigh = None
self.read_overlapped.union.Pointer = None
self.write_event = CreateEventA(None, True, False, None)
self.write_overlapped = OVERLAPPED()
self.write_overlapped.hEvent = self.write_event
self.write_overlapped.Internal = None
self.write_overlapped.InternalHigh = None
self.write_overlapped.union.Pointer = None
def do_run(self):
while not self.exit_loop:
pipe_handle = None
try:
pipe_handle = self.CreatePipeHandle()
except Exception as e:
log("CreatePipeHandle()", exc_info=True)
log.error("Error: failed to create named pipe")
log.error(" at path '%s'", self.pipe_name)
log.error(" %s", e)
return
log("CreatePipeHandle()=%s", pipe_handle)
if pipe_handle == INVALID_HANDLE_VALUE:
log.error("Error: invalid handle for named pipe '%s'",
self.pipe_name)
return
event = CreateEventA(None, True, False, None)
overlapped = OVERLAPPED()
overlapped.hEvent = event
overlapped.Internal = None
overlapped.InternalHigh = None
overlapped.union.Pointer = None
r = ConnectNamedPipe(pipe_handle, overlapped)
log("ConnectNamedPipe()=%s", r)
if not r and not self.exit_loop:
r = WaitForSingleObject(event, INFINITE)
log("WaitForSingleObject(..)=%s", WAIT_STR.get(r, r))
if r:
log("do_run() error on WaitForSingleObject", exc_info=True)
log.error("Error: cannot connect to named pipe '%s'",
self.pipe_name)
CloseHandle(pipe_handle)
continue
if self.exit_loop:
CloseHandle(pipe_handle)
break
if r == 0 and False:
e = GetLastError()
if e == ERROR_PIPE_CONNECTED:
pass
else:
log.error("Error: cannot connect to named pipe '%s'",
self.pipe_name)
log.error(" error %s", e)
CloseHandle(pipe_handle)
continue
#from now on, the pipe_handle will be managed elsewhere:
self.new_connection_cb(self, pipe_handle)