python sipserver

Python中有一些库可以用来开发SIP服务器，例如pjsip、sipsimple、sippy、python-sipsimple等。这些库提供了丰富的功能和API，可以帮助开发人员快速构建高性能的SIP服务器。

以下是一个使用sipsimple库实现简单SIP服务器的示例代码：

from sipsimple.core import SIPCoreError, SIPURI, ToHeader
from sipsimple.application import SIPApplication, SIPApplicationError
from sipsimple.account import AccountManager, Account
from sipsimple.streams import AudioStream
from sipsimple.lookup import DNSLookup, SRVLookup
from sipsimple.configuration.settings import SIPSimpleSettings
from sipsimple.threading import run_in_thread

class MySIPServer(SIPApplication):

    def __init__(self):
        SIPApplication.__init__(self)
        self.account_manager = AccountManager()
        self.account = None

    def start(self):
        super(MySIPServer, self).start()
        self.account_manager.start()

    def stop(self):
        self.account_manager.stop()
        super(MySIPServer, self).stop()

    @run_in_thread()
    def register_account(self, username, password, domain):
        try:
            sip_uri = SIPURI(username=username, password=password, host=domain)
            self.account = Account(username=sip_uri, password=password, domain=domain)
            self.account_manager.register(self.account)
        except (SIPCoreError, SIPApplicationError) as e:
            print("Failed to register account: %s" % str(e))

    def handle_request(self, req):
        # 处理收到的SIP请求
        print("Received SIP request: %s" % req)
        to_header = ToHeader("<sip:%s@%s>" % (req.to_details.username, req.to_details.host))
        response = req.create_response(200, "OK")
        response.headers["To"] = to_header
        self.transport.send(response)

if __name__ == "__main__":
    # 初始化SIPSimple设置
    SIPSimpleSettings().initialize()

    # 创建SIP服务器实例
    server = MySIPServer()

    # 注册SIP账户
    server.register_account("username", "password", "example.com")

    # 启动SIP服务器
    server.start()

    # 运行事件循环
    server.run()

在这个示例中，我们使用SIPApplication类来实现SIP服务器，通过注册SIP账户来处理收到的SIP请求，并在收到请求后返回一个200 OK的响应。开发人员可以根据自己的需求使用不同的库和API来实现SIP服务器。