Used to test https://twistedmatrix.com/trac/ticket/8422

serverFromString-example.py

#
# Run it on python 2.7 on Linux with
# 1) LANG=C python serverFromString-example.py
# 2) LANG=en_US.UTF-8 python serverFromString-example.py

from twisted.internet import reactor, endpoints
from twisted.internet.protocol import Protocol, Factory


class Echo(Protocol):

    def __init__(self, factory):
        self.factory = factory

    def connectionMade(self):
        self.factory.numProtocols = self.factory.numProtocols+1 
        self.transport.write(
            "Welcome! There are currently %d open connections.\n" %
            (self.factory.numProtocols,))

    def connectionLost(self, reason):
        self.factory.numProtocols = self.factory.numProtocols-1

    def dataReceived(self, data):
        self.transport.write(data)


class EchoFactory(Factory):
    def buildProtocol(self, addr):
        return Echo()

server = endpoints.serverFromString(
    reactor,
    u"unix:/tmp/jalepe\xf1o:backlog=7:mode=0123:lockfile=1"
    )
server.listen(EchoFactory())

reactor.run()