asyncore


How to quit an asyncore dispatcher from a handler?

拟墨画扇 提交于 2020-01-20 05:04:24
问题 I couldn't find this in the docs, but how am I meant to break out of the asyncore.loop() without using signals? 回答1: That was quick to work out after looking at the source code. Thanks to the docs for linking directly to the source! There is an ExitNow exception you can simply raise from the app, which exits the loop. Using the EchoHandler example from the docs, I've modified it to quit immediately when receiving data. class EchoHandler(asyncore.dispatcher_with_send): def handle_read(self):

How to quit an asyncore dispatcher from a handler?

[亡魂溺海] 提交于 2020-01-20 05:04:10
问题 I couldn't find this in the docs, but how am I meant to break out of the asyncore.loop() without using signals? 回答1: That was quick to work out after looking at the source code. Thanks to the docs for linking directly to the source! There is an ExitNow exception you can simply raise from the app, which exits the loop. Using the EchoHandler example from the docs, I've modified it to quit immediately when receiving data. class EchoHandler(asyncore.dispatcher_with_send): def handle_read(self):

Python3 Catch errors when from self.connect(('badhost',6667))

主宰稳场 提交于 2020-01-16 18:35:30
问题 Looks like asyncio is the module to use. I'll leave this question up anyway, because it doesn't look like there is a way to catch specific errors with asynchat. class mysocket(asynchat.async_chat): terminator = b'\n' def __init__(self,sock=None): asynchat.async_chat.__init__(self,sock) self.create_socket() # Try always succeeds with self.connect try: self.connect(('badhost',6667)) print('command always successful') except: print('This never gets printed') How do I catch errors from the self

Python asyncore UDP server

别来无恙 提交于 2020-01-06 02:23:25
问题 I am writing server application in Python that listens for requests, processes them, and sends a response. All req/resp are send from the same address and port to the server application. I need to recv/send messages simultaneously, and the server need to recieve/send messages from/to the same port and address. I found some tutorials for asynchore sockets, but there are only examples for TCP connections. Unfortunately, I need UDP. When I change SOCK_STREAM to SOCK_DGRAM in the create method, I

Asyncore client in thread makes the whole program crash when sending data immediately

扶醉桌前 提交于 2019-12-25 17:42:36
问题 I write a simple program in python, with asyncore and threading. I want to implement a asynchorous client without blocking anything, like this: How to handle asyncore within a class in python, without blocking anything? Here is my code: import socket, threading, time, asyncore class Client(asyncore.dispatcher): def __init__(self, host, port): asyncore.dispatcher.__init__(self) self.create_socket(socket.AF_INET, socket.SOCK_STREAM) self.connect((host, port)) mysocket = Client("",8888)

condition variable not holding wait across two threads

╄→гoц情女王★ 提交于 2019-12-24 19:25:32
问题 Stumped on this thread sync I'm encountering. Basically, I'm writing to a out buffer, and waiting on a condition variable until the read buffer is populated with a response from a socket. It's an incredibly simple thread sync. def write_wait_response(self, buffer, timeout=30): ''' Write and wait for response Params: Buffer BYTE encoded data Timeout timeout to wait for response Returns: response str if successful ''' self.buffer = buffer if self.waitLock(timeout): # condition var was signaled,

Not receiving any data back from bittorrent peer handshake

馋奶兔 提交于 2019-12-24 00:35:15
问题 I'm having some trouble on the bit torrent protocol. I'm at the point of sending a handshake message to some peers. I have my client basically connect to every peer in list then send the 'handshake'. Code is below - peer_id = 'autobahn012345678bit' peer_id = peer_id.encode('utf-8') pstr = 'BitTorrent protocol' pstr = pstr.encode('utf-8') pstrlen = chr(19) pstrlen = pstrlen.encode('utf-8') reserved = chr(0) * 8 reserved = reserved.encode('utf-8') There are my variables that I'm sending. My msg

asyncore.loop doesn't terminate when there are no more connections

允我心安 提交于 2019-12-13 20:40:55
问题 I am following some example code to use asyncore here, only having set a timeout value for asyncore.loop as in the following full example: import smtpd import asyncore class CustomSMTPServer(smtpd.SMTPServer): def process_message(self, peer, mailfrom, rcpttos, data): print 'Receiving message from:', peer print 'Message addressed from:', mailfrom print 'Message addressed to :', rcpttos print 'Message length :', len(data) return server = CustomSMTPServer(('127.0.0.1', 1025), None) asyncore.loop

Python asyncore with UDP

岁酱吖の 提交于 2019-12-12 18:41:21
问题 Can I write an UDP client/server application in asyncore? I have already written one using TCP. My desire is to integrate it with support for UDP. My question was not previously asked/answered by the following: Python asyncore UDP server 回答1: Yes you can. Here is a simple example: class AsyncoreSocketUDP(asyncore.dispatcher): def __init__(self, port=0): asyncore.dispatcher.__init__(self) self.create_socket(socket.AF_INET, socket.SOCK_DGRAM) self.bind(('', port)) # This is called every time

Asyncore loop and raw_input problem

故事扮演 提交于 2019-12-12 10:37:49
问题 I'm trying to learn asyncore module. So I decided to develop a chat program. I have to listen the network and broadcast udp packages same time. But problem is while user typing a message, user cannot see other messages that sent by another users. What should I do? My code: #!/usr/bin/python # -*- coding: utf-8 -*- import asyncore import socket class Listener(asyncore.dispatcher): def __init__(self, port): asyncore.dispatcher.__init__(self) self.port = port self.create_socket(socket.AF_INET,

工具导航Map