使用Python连接iPhone的APNS

Question

我正在尝试用Python给iPhone发送推送通知。我已经把我的证书和私钥从钥匙串中导出成了一个p12文件，然后用下面的命令把它转换成了pem文件：

openssl pkcs12 -in cred.p12 -out cert.pem -nodes -clcerts

我在Python中使用APNSWrapper来建立连接。

我运行了以下代码：

deviceToken = 'Qun\xaa\xd ... c0\x9c\xf6\xca' 

# create wrapper
wrapper = APNSNotificationWrapper('/path/to/cert/cert.pem', True)

# create message
message = APNSNotification()
message.token(deviceToken)
message.badge(5)

# add message to tuple and send it to APNS server
wrapper.append(message)
wrapper.notify()

然后我收到了这个错误信息：

ssl.SSLError: (1, '_ssl.c:485: 
error:14094416:SSL routines:SSL3_READ_BYTES:sslv3 alert certificate unknown')

有没有人能帮我解决这个问题？

Answer 1

原来的代码有一些错误，所以这里有一个修正过的版本，对我来说是可以正常工作的。

from struct import pack
from OpenSSL import SSL
from twisted.internet import reactor
from twisted.internet.protocol import ClientFactory, Protocol
from twisted.internet.ssl import ClientContextFactory
import binascii
import struct

APNS_SERVER_HOSTNAME = "gateway.sandbox.push.apple.com"
APNS_SERVER_PORT = 2195
APNS_SSL_CERTIFICATE_FILE = "<your ssl certificate.pem>"
APNS_SSL_PRIVATE_KEY_FILE = "<your ssl private key.pem>"
DEVICE_TOKEN = "<hexlified device token>"
MESSAGE = '{"aps":{"alert":"twisted test"}}'

class APNSClientContextFactory(ClientContextFactory):
    def __init__(self):
        self.ctx = SSL.Context(SSL.SSLv3_METHOD)
        self.ctx.use_certificate_file(APNS_SSL_CERTIFICATE_FILE)
        self.ctx.use_privatekey_file(APNS_SSL_PRIVATE_KEY_FILE)

    def getContext(self):
        return self.ctx

class APNSProtocol(Protocol):

    def connectionMade(self):
        print "connection made"
        self.sendMessage(binascii.unhexlify(DEVICE_TOKEN), MESSAGE)
        self.transport.loseConnection()

    def sendMessage(self, deviceToken, payload):
        # notification messages are binary messages in network order
        # using the following format:
        # <1 byte command> <2 bytes length><token> <2 bytes length><payload>
        fmt = "!cH32sH%ds" % len(payload)
        command = '\x00'
        msg = struct.pack(fmt, command, 32, deviceToken,
                          len(payload), payload)
        print "%s: %s" %(binascii.hexlify(deviceToken), binascii.hexlify(msg))
        self.transport.write(msg)

class APNSClientFactory(ClientFactory):
    def buildProtocol(self, addr):
        print "Connected to APNS Server %s:%u" % (addr.host, addr.port)
        return APNSProtocol()

    def clientConnectionLost(self, connector, reason):
        print "Lost connection. Reason: %s" % reason

    def clientConnectionFailed(self, connector, reason):
        print "Connection failed. Reason: %s" % reason

if __name__ == '__main__':
    reactor.connectSSL(APNS_SERVER_HOSTNAME,
                       APNS_SERVER_PORT,
                       APNSClientFactory(),
                       APNSClientContextFactory())
    reactor.run()

Answer 2

你有没有考虑过使用Twisted这个包呢？下面的代码是从这里摘下来的：

from struct import pack
from OpenSSL import SSL
from twisted.internet import reactor
from twisted.internet.protocol import ClientFactory, Protocol
from twisted.internet.ssl import ClientContextFactory

APNS_SERVER_HOSTNAME = "<insert the push hostname from your iPhone developer portal>"
APNS_SERVER_PORT = 2195
APNS_SSL_CERTIFICATE_FILE = "<your ssl certificate.pem>"
APNS_SSL_PRIVATE_KEY_FILE = "<your ssl private key.pem>"

class APNSClientContextFactory(ClientContextFactory):
    def __init__(self):
        self.ctx = SSL.Context(SSL.SSLv3_METHOD)
        self.ctx.use_certificate_file(APNS_SSL_CERTIFICATE_FILE)
        self.ctx.use_privatekey_file(APNS_SSL_PRIVATE_KEY_FILE)

    def getContext(self):
        return self.ctx

class APNSProtocol(Protocol):
    def sendMessage(self, deviceToken, payload):
        # notification messages are binary messages in network order
        # using the following format:
        # <1 byte command> <2 bytes length><token> <2 bytes length><payload>
        fmt = "!cH32cH%dc" % len(payload)
        command = 0
        msg = struct.pack(fmt, command, deviceToken,
                          len(payload), payload)
        self.transport.write(msg)

class APNSClientFactory(ClientFactory):
    def buildProtocol(self, addr):
        print "Connected to APNS Server %s:%u" % (addr.host, addr.port)
        return APNSProtocol()

    def clientConnectionLost(self, connector, reason):
        print "Lost connection. Reason: %s" % reason

    def clientConnectionFailed(self, connector, reason):
        print "Connection failed. Reason: %s" % reason

if __name__ == '__main__':
    reactor.connectSSL(APNS_SERVER_HOSTNAME, 
                       APNS_SERVER_PORT,
                       APNSClientFactory(), 
                       APNSClientContextFactory())
    reactor.run()

Answer 3

我最近用Django做了这个 - http://leecutsco.de/2009/07/14/push-on-the-iphone/

可能会对你有帮助吧？这个做法没有使用任何额外的库，都是Python自带的东西。要提取send_message()这个方法也不难。