本文整理汇总了Python中usocket.SOCK_DGRAM属性的典型用法代码示例。如果您正苦于以下问题：Python usocket.SOCK_DGRAM属性的具体用法？Python usocket.SOCK_DGRAM怎么用？Python usocket.SOCK_DGRAM使用的例子？那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类usocket的用法示例。
在下文中一共展示了usocket.SOCK_DGRAM属性的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: wan_ok
# 需要导入模块: import usocket [as 别名]
# 或者: from usocket import SOCK_DGRAM [as 别名]
def wan_ok(self,
packet=b'$\x1a\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x03www\x06google\x03com\x00\x00\x01\x00\x01'):
if not self.isconnected(): # WiFi is down
return False
length = 32 # DNS query and response packet size
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.setblocking(False)
s.connect(('8.8.8.8', 53))
await asyncio.sleep(1)
try:
await self._as_write(packet, sock=s)
await asyncio.sleep(2)
res = await self._as_read(length, s)
if len(res) == length:
return True # DNS response size OK
except OSError: # Timeout on read: no connectivity.
return False
finally:
s.close()
return False 示例2: get_time
# 需要导入模块: import usocket [as 别名]
# 或者: from usocket import SOCK_DGRAM [as 别名]
def get_time(self):
if not self.isconnected():
return 0
res = await self.wan_ok()
if not res:
return 0 # No internet connectivity.
# connectivity check is not ideal. Could fail now... FIXME
# (date(2000, 1, 1) - date(1900, 1, 1)).days * 24*60*60
NTP_DELTA = 3155673600
host = "pool.ntp.org"
NTP_QUERY = bytearray(48)
NTP_QUERY[0] = 0x1b
t = 0
async with self.lock:
addr = socket.getaddrinfo(host, 123)[0][-1] # Blocks 15s if no internet
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.setblocking(False)
try:
s.connect(addr)
await self._as_write(NTP_QUERY, 48, s)
await asyncio.sleep(2)
msg = await self._as_read(48, s)
val = struct.unpack("!I", msg[40:44])[0]
t = val - NTP_DELTA
except OSError:
pass
s.close()
if t < 16 * 365 * 24 * 3600:
t = 0
self.dprint('Time received: ', t)
return t 示例3: time
# 需要导入模块: import usocket [as 别名]
# 或者: from usocket import SOCK_DGRAM [as 别名]
def time(host = 'pool.ntp.org', port=123):
NTP_QUERY = bytearray(48)
NTP_QUERY[0] = 0x1b
NTP_DELTA = 2208988800 # 1970-01-01 00:00:00
addr = socket.getaddrinfo(host, 123)[0][-1]
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.settimeout(1)
res = s.sendto(NTP_QUERY, addr)
msg = s.recv(48)
s.close()
val = struct.unpack("!I", msg[40:44])[0]
return val - NTP_DELTA 示例4: init_socket
# 需要导入模块: import usocket [as 别名]
# 或者: from usocket import SOCK_DGRAM [as 别名]
def init_socket(self):
ok = True
self.ip = "239.255.255.250"
self.port = 1900
try:
# This is needed to join a multicast group
self.mreq = struct.pack("4sl", inet_aton(self.ip), INADDR_ANY)
# Set up server socket
self.ssock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
self.ssock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
try:
self.ssock.bind(("", self.port))
except Exception as e:
dbg("WARNING: Failed to bind %s:%d: %s", (self.ip, self.port, e))
ok = False
try:
dbg(
"IP: "
+ str(socket.IPPROTO_IP)
+ " IP_ADD_MEMBERSHIP: "
+ str(socket.IP_ADD_MEMBERSHIP)
+ " mreq: "
+ str(self.mreq)
)
self.ssock.setsockopt(
socket.IPPROTO_IP, socket.IP_ADD_MEMBERSHIP, self.mreq
)
except Exception as e:
dbg("WARNING: Failed to join multicast group!: " + str(e))
ok = False
except Exception as e:
dbg("Failed to initialize UPnP sockets!")
return False
if ok:
dbg("Listening for UPnP broadcasts") 示例5: time
# 需要导入模块: import usocket [as 别名]
# 或者: from usocket import SOCK_DGRAM [as 别名]
def time():
NTP_QUERY = bytearray(48)
NTP_QUERY[0] = 0x1b
addr = socket.getaddrinfo(host, 123)[0][-1]
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.settimeout(1)
res = s.sendto(NTP_QUERY, addr)
msg = s.recv(48)
s.close()
val = struct.unpack("!I", msg[40:44])[0]
return val - NTP_DELTA
# There's currently no timezone support in MicroPython, so
# utime.localtime() will return UTC time (as if it was .gmtime()) 示例6: socket
# 需要导入模块: import usocket [as 别名]
# 或者: from usocket import SOCK_DGRAM [as 别名]
def socket(af=usocket.AF_INET):
s = usocket.socket(af, usocket.SOCK_DGRAM)
s.setblocking(False)
return s 示例7: respond_to_search
# 需要导入模块: import usocket [as 别名]
# 或者: from usocket import SOCK_DGRAM [as 别名]
def respond_to_search(self, destination, search_target):
dbg("Responding to search for %s" % self.get_name())
date_str = format_timetuple_and_zone(clock.gmtime(), "GMT")
location_url = self.root_url % {
"ip_address": self.ip_address,
"port": self.port,
}
message = (
"HTTP/1.1 200 OK\r\n"
"CACHE-CONTROL: max-age=86400\r\n"
"DATE: %s\r\n"
"EXT:\r\n"
"LOCATION: %s\r\n"
'OPT: "http://schemas.upnp.org/upnp/1/0/"; ns=01\r\n'
"01-NLS: %s\r\n"
"SERVER: %s\r\n"
"ST: %s\r\n"
"USN: uuid:%s::%s\r\n"
"X-User-Agent: redsonic\r\n\r\n"
% (
date_str,
location_url,
self.uuid,
self.server_version,
search_target,
self.persistent_uuid,
search_target,
)
)
if self.other_headers:
for header in self.other_headers:
message += "%s\r\n" % header
message += "\r\n"
try:
temp_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
temp_socket.sendto(message, destination)
temp_socket.close()
gc.collect()
except Exception as e:
dbg("Got problem to send response %s" % str(e))