如何检查IMAP-IDLE是否有效？

Question

我注意到我的IMAP服务器似乎支持IDLE,但通知迟到了.所以我问自己:我如何检查IDLE是否有效(或者是我的邮件客户端)？

Answer 1

受http://pymotw.com/2/imaplib/的启发,您可以使用以下Python脚本来检查IDLE的推送通知是否以及如何快速工作:

imaplib_connect.py

import imaplib
import ConfigParser
import os

def open_connection(verbose=False):
    # Read the config file
    config = ConfigParser.ConfigParser()
    config.read([os.path.abspath('settings.ini')])

    # Connect to the server
    hostname = config.get('server', 'hostname')
    if verbose: print 'Connecting to', hostname
    connection = imaplib.IMAP4_SSL(hostname)

    # Login to our account
    username = config.get('account', 'username')
    password = config.get('account', 'password')
    if verbose: print 'Logging in as', username
    connection.login(username, password)
    return connection

if __name__ == '__main__':
    c = open_connection(verbose=True)
    try:
        print c
    finally:
        c.logout()
        print "logged out"

imaplib_idlewait.py

import imaplib
import pprint
import imaplib_connect

imaplib.Debug = 4
c = imaplib_connect.open_connection()
try:
    c.select('INBOX', readonly=True)
    c.send("%s IDLE\r\n"%(c._new_tag()))
    print ">>> waiting for new mail..."
    while True:
      line = c.readline().strip();
      if line.startswith('* BYE ') or (len(line) == 0):
        print ">>> leaving..."
        break
      if line.endswith('EXISTS'):
        print ">>> NEW MAIL ARRIVED!"
finally:
    try:
        print ">>> closing..."
        c.close()
    except:
        pass
    c.logout()

的Settings.ini

[server]
hostname: yourserver.com

[account]
username: yourmail@yourserver.com
password: yoursecretpassword

创建这些文件后,只需调用即可

python imaplib_idlewait.py

请注意,如果按CTRL + C(readline()阻塞并且没有被close()终止),此脚本不会正常关闭,但是,对于测试它应该足够好.

另请注意,大多数邮件服务器在30分钟后终止连接.之后你必须重新打开连接,例如在此处演示:http://blog.mister-muffin.de/2013/06/05/reliable-imap-synchronization-with-idle-support