Connection reset, by the tracker, upon issuing announce request

udp.py

import os
import sys
import socket
import struct
import time
import urllib
import random

soc = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

MAX = 65535
PORT = 6881

#I have tried will all the trackers below, but I get the same 10054 issue with announce request
host = "tracker.ccc.de"
host = "ipv4.tracker.harry.lu"
host = "tracker.istole.it"
host = "tracker.openbittorrent.com"
port = 80

connection_id = 0x41727101980
action = 0
transaction_id = random.randint(256, 4096)

msg = struct.pack('!qii', connection_id, action, transaction_id)

print msg

#connection request/response
n = 0
delay = 15 * (2 ** n)
while True:
    soc.sendto(msg, (host, port))
    print "setting delay to ", delay, " seconds"
    soc.settimeout(delay)
    try:
        data, address = soc.recvfrom(1024)
    except socket.timeout:
        n += 1
        delay *= 2
        if n > 8:
            raise RuntimeError("Server not responding, so giving it up")
    except:
        raise #some other error so throw it to the user
    else:        
        print data
        print address

        action, ret_transaction_id, connection_id = struct.unpack("!iiq", data)
        if action != 0 or \
           ret_transaction_id != transaction_id:
           print "Invalid message received from the tracker. Trying again"
           n = 0
           continue
        else:
            print "Obtained connection_id ", connection_id
            break #we got the connection_id

soc.close()
del(soc)

#announce request/response
#Tried creating the soc again to see if I don't get the 10054 error. But no luck.
soc = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

action = 1
transaction_id = random.randint(256, 4096)
   
#I am using the hash of a specific torrent which is well seeded.
#I have tried both quoted and unquoted hashed but I keep getting the 10054 issue
quoted_hash = "m%AE%8C%EB%0E%3F%EB%06%8C%96%91%039%D2%EF%E5%D8m%B4%ED"
unquoted_hash = urllib.unquote_plus(quoted_hash)
         
info_hash   = quoted_hash
peer_id     = "IMPL_TORRENT__PYTHON"
downloaded  = 0
left        = 121114746
uploaded    = 0
event       = 0
ip          = 0
key         = 0
num_want    = -1
port        = 6881



msg = struct.pack('!qii20s20sqqqiiiih',\
                  connection_id,\
                  action,\
                  transaction_id,\
                  info_hash,\
                  peer_id,\
                  downloaded,\
                  left,\
                  uploaded,\
                  event,\
                  ip,\
                  key,\
                  num_want,\
                  port)
                  
n = 0
delay = 15 * (2 ** n)

print "waiting for 20 seconds"
time.sleep(5)
while True:
    soc.sendto(msg, (host, port))
    print "setting delay to ", delay, " seconds"
    soc.settimeout(delay)
    try:
        data, address = soc.recvfrom(1024)
    except socket.timeout:
        n += 1
        delay *= 2
        if n > 8:
            raise RuntimeError("Server not responding, so giving it up")
    except:
        raise #some other error so throw it to the user
    else:        
        print data
        print address

        action, ret_transaction_id, interval, leechers, seeders = struct.unpack("!iiiii", data)
        if action != 1 or \
           ret_transaction_id != transaction_id:
           print "Invalid message received from the tracker. Trying again"
           n = 0
           continue
        else:
            print "interval ", interval
            print "leechers ", leechers
            print "seeders ", seeders
            break #we got the connection_id

soc.close()
del(soc)