この種のことを行う方法を学ぶためだけに、python3.3 で http サーバーを作成しています。fcntl.ioctlリクエストを解析する関数で、ソケットで読み取ることができるバイト数を取得するために使用したいのですが、これを行うのは、kqueue をチェックした結果、読み取るものがあることを示す kevent が表示された場合のみです。ソケットに。しかし、 を呼び出そうとするとfcntl.ioctl、 が表示されますOSError: [Errno 14] Bad address。私は何を間違っていますか？また、これは最初の呼び出しで発生しているようです。関連するコードは次のとおりです。
def client_thread(kq, client_socket, methods):
while True:
events = kq.control([], 2, POLLTIME) #we pass an empty list of changes, because we don't have any changes to make to the events we are interested in.
#we want a list that is at most two long. We listen for POLLTIME seconds.
for event in events:
if event != KILL_KEV: #there are only two events in our kqueue
handle_client(client_socket, methods)
else: #KILL_SOCK has a connection
break
client_socket.close()
client_socket.shutdown()
def handle_client(client_socket, methods):
request = parse_request(client_socket) #parse the request data in the client socket
handlers = methods[request["request"]["method"]] #retrieve the appropriate list of handlers from the methods dict
for path_match_pred, handler_func in handlers:
if path_match_pred(path): #if the path matches whatever path predicate you've created...
break
response = handler_func(request) #... then call the appropriate handler function to handle the request
send_response(client_socket, response) #and finally, send the response.
def parse_request(client_socket):
"""Returns the request data, parsed into a dictionary like this:
{
"request": {
"method": method,
"path": path,
"version": HTTP version
},
"headers": header dictionary,
"body": body data as a string
}
This should only be called if the client socket is ready for reading!
"""
client_fd = client_socket.fileno() #get the file descriptor for the socket
bytes_in_socket = 0
fcntl.ioctl(client_fd, termios.FIONREAD, bytes_in_socket) #count the bytes in it
#^^^^^^^^^THIS IS WHERE IT BREAKS
print(bytes_in_socket, "bytes in socket")
msg = bytearray() #make empty byte array
while bytes_in_socket:
msg.extend(client_socket.recv(bytes_in_socket)) #read the bytes we counted earlier
fcntl.ioctl(client_fd, termios.FIONREAD, bytes_in_socket) #check for more bytes
print(bytes_in_socket, "bytes left to read")