def QueryCallback(sdRef,flags,interfaceIndex,
errorCode,fullname,rrtype,
rrclass,rdlen,rdata,
ttl,userdata):
# This is very ugly; should understand resource records better
st = struct.unpack('%dc' % (rdlen-1), rdata)
l1 = ord(st[0])
l2 = ord(st[l1+1])
typ = ''.join(st[1:l1+1])
klass = ''.join(st[l1+2:l1+l2+2])
serviceType = typ + '.' + klass
if flags & SERVICE_ADD:
# Add the service type to the browser
app.frame.AddServiceType(serviceType)
serviceRef = bonjour.AllocateDNSServiceRef()
ret = bonjour.pyDNSServiceBrowse( serviceRef, # DNSServiceRef *sdRef,
0, # DNSServiceFlags flags,
0, # uint32_t interfaceIndex,
serviceType, # const char *regtype,
'local.', # const char *domain, /* may be NULL */
BrowseCallback, # DNSServiceBrowseReply callBack,
None)
if ret:
print "ret = %d; exiting" % ret
sys.exit(1)
fd = bonjour.DNSServiceRefSockFD(serviceRef)
serviceRefDict[fd] = serviceRef
elif flags == 0:
app.frame.RemoveServiceType(serviceType)
def startResolving(self):
"""Advertise the service with Bonjour.
This method returns a deferred. Upon success, the result
is a dictionary of information about the service. Upon failure,
the result is a Failure object that knows the BonjourError code.
"""
# Allocate a Bonjour Service Reference
self.sdRef = bonjour.AllocateDNSServiceRef()
# Initiate Registration of the service
ret = bonjour.pyDNSServiceResolve(self.sdRef, self.flags,
self.interfaceIndex, self.name,
self.regtype, self.domain,
self.callback, self.context)
# Error check for immediate failure
if ret != bonjour.kDNSServiceErr_NoError:
raise BonjourResolveError(ret)
# Get the file descriptor and integrate with twisted
self.fd = bonjour.DNSServiceRefSockFD(self.sdRef)
self.bonjourDesc = BonjourDescriptor(self.fd, self.sdRef)
self.reactor.addReader(self.bonjourDesc)
return None
def __init__(self, serviceName, regtype, url, port=9999):
if port == 0:
raise PublisherError(
'Service registered with invalid port %d' % (port, ))
self.serviceRef = None
self.registerFlag = threading.Event()
# Create a text record
txtRecordTxt = 'url=' + url
txtRecord = chr(len(txtRecordTxt)) + txtRecordTxt
txtRecordLen = len(txtRecord)
# Allocate a service discovery reference and register the specified service
self.serviceRef = bonjour.AllocateDNSServiceRef()
ret = bonjour.pyDNSServiceRegister(self.serviceRef, 0, 0,
serviceName, regtype, 'local.',
None, port, txtRecordLen,
txtRecord,
self.__RegisterCallback, None)
if ret != bonjour.kDNSServiceErr_NoError:
raise PublisherError(ret)
# Get the socket and loop
fd = bonjour.DNSServiceRefSockFD(self.serviceRef)
ret = select.select([fd], [], [])
if ret[0]:
ret = bonjour.DNSServiceProcessResult(self.serviceRef)
def Run(self):
self.running = 1
# Allocate a service discovery ref and browse for the specified service type
self.serviceRef = bonjour.AllocateDNSServiceRef()
ret = bonjour.pyDNSServiceBrowse(self.serviceRef, 0, 0,
self.serviceType, 'local.',
self.__BrowseCallback, None)
if ret != bonjour.kDNSServiceErr_NoError:
print "ret = %d; exiting" % ret
raise BrowserError('browse', ret)
# Get socket descriptor
fd = bonjour.DNSServiceRefSockFD(self.serviceRef)
if fd <= 0:
raise BrowserError('fd', fd)
# Loop
while self.IsRunning():
# print "do select"
ret = select.select([fd], [], [], self.timeout)
if ret[0]:
#print "do process result"
ret = bonjour.DNSServiceProcessResult(self.serviceRef)
if ret != bonjour.kDNSServiceErr_NoError:
raise BrowserError('processresult', ret)
def BrowseServices():
# Allocate a service discovery ref and browse for the specified service type
serviceRef = bonjour.AllocateDNSServiceRef()
ret = bonjour.pyDNSServiceQueryRecord(serviceRef,
0, # no flags
0, # all network interfaces
"_services._dns-sd._udp.local.", # meta-query record name
PTR_RECORD_TYPE,
INTERNET_CLASS_TYPE,
QueryCallback, # callback function ptr
None)
if ret != bonjour.kDNSServiceErr_NoError:
print "ret = %d; exiting" % ret
sys.exit(1)
# Get socket descriptor and loop
fd = bonjour.DNSServiceRefSockFD(serviceRef)
while 1:
ret = select.select([fd],[],[])
ret = bonjour.DNSServiceProcessResult(serviceRef)
# Deallocate the service discovery ref
bonjour.DNSServiceRefDeallocate(serviceRef)
hostname = socket.gethostname()
# Allocate a service discovery reference and register the specified service
serviceRef = bonjour.AllocateDNSServiceRef()
ret = bonjour.pyDNSServiceRegister(
serviceRef, # DNSServiceRef *sdRef,
0, # DNSServiceFlags flags, /* may be 0 */
0, # uint32_t interfaceIndex,/* may be 0 */
servicename, # const char *name, /* may be NULL */
regtype, # const char *regtype,
'local.', # const char *domain, /* may be NULL */
hostname, # const char *host, /* may be NULL */
port, # uint16_t port,
0, # uint16_t txtLen,
"", # const void *txtRecord, /* may be NULL */
RegisterCallback, # DNSServiceRegisterReply callBack, /* may be NULL */
userdata)
if ret != bonjour.kDNSServiceErr_NoError:
print "error %d returned; exiting" % ret
sys.exit(ret)
# Get the socket and loop
fd = bonjour.DNSServiceRefSockFD(serviceRef)
while 1:
ret = select.select([fd], [], [])
ret = bonjour.DNSServiceProcessResult(serviceRef)
# Deallocate the service discovery ref
bonjour.DNSServiceRefDeallocate(serviceRef)
