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# Exposing rich exception information from callbacks example
import pycurl, random, socket
class ConnectionRejected(Exception):
pass
def opensocket(curl, purpose, curl_address):
if random.random() < 0.5:
curl.exception = ConnectionRejected('Rejecting connection attempt in opensocket callback')
return pycurl.SOCKET_BAD
family, socktype, protocol, address = curl_address
s = socket.socket(family, socktype, protocol)
s.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
return s
c = pycurl.Curl()
c.setopt(c.URL, 'http://pycurl.io')
c.exception = None
c.setopt(c.OPENSOCKETFUNCTION,
lambda purpose, address: opensocket(c, purpose, address))
try:
c.perform()
except pycurl.error as e:
if e.args[0] == pycurl.E_COULDNT_CONNECT and c.exception:
print(c.exception)
else:
print(e)