various(4) BTC testnet transmit / propagate methods, all failed

testnetvariouspushtxmethods.py

"""
various(4) BTC testnet transmit / pushtx/ propagate methods, all failed :(
---------------------------------------
sending using helloblock:
HTTPSConnectionPool(host='testnet.helloblock.io', port=443): Max retries exceeded with url: /v1/transactions (Caused by NewConnectionError('<requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x000000000475E860>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed',))
---------------------------------------
sending using blockcypher:
{'error': "Couldn't deserialize request: invalid character 'x' in literal true (expecting 'r')"}
---------------------------------------
sending using blockcypher @ sessions:
{u'error': u"Couldn't deserialize request: invalid character 'x' in literal true (expecting 'r')"}
---------------------------------------
sending using webbtc:
{u'error': u'Connection refused - connect(2) for "node" port 9999'}
---------------------------------------
sending using pybitcointools:
{'status': 'fail', 'message': '', 'code': 500, 'data': 'Could not decode your transaction!'}
---------------------------------------
"""


from pycoin.key.validate import is_address_valid
from pycoin.tx.tx_utils import create_signed_tx
from pycoin.convention import btc_to_satoshi
from pycoin.tx import Spendable
from urllib2 import urlopen
import json, pybitcointools
from pybitcointools import make_request
from pycoin.serialize import h2b, h2b_rev
from requests import session
import requests, ast

def helloblocksend(tx):
    print 'sending using helloblock:'
    helloblockurl = 'https://testnet.helloblock.io/v1/transactions'
    payload = {'rawTxHex': tx.as_hex()}
    try:
        return requests.post(helloblockurl, data=payload).json()
    except Exception, e:
        errahmessage1 = e[0]
        return errahmessage1

def blockcyphersend(tx):
    print 'sending using blockcypher:'
    blockcypherurl = 'http://api.blockcypher.com/v1/btc/test3/txs/push'
    try:
        return json.loads(make_request(blockcypherurl, 'tx:%s' % tx.as_hex()))
    except Exception, e:
        errahmessage1 = ast.literal_eval(e[0])
        return errahmessage1

def blockcypherREQsend(tx):
    print 'sending using blockcypher @ sessions:'
    blockcypherurl = 'http://api.blockcypher.com/v1/btc/test3/txs/push'
    payload = {'tx': tx.as_hex(),}
    return requests.post(blockcypherurl, data=payload).json()

def webbtcsend(tx):
    print 'sending using webbtc:'
    webbtc_url = 'http://test.webbtc.com/relay_tx.json'
    payload = {'tx': tx.as_hex(),}
    return requests.post(webbtc_url, data=payload).json()

def pybitcointoolssend(tx):
    print 'sending using pybitcointools:'
    try:
        return pybitcointools.blockr_pushtx(tx.as_hex(), network=pbtctNet)
    except Exception, e:
        errahmessage1 = ast.literal_eval(e[0])
        return errahmessage1
    

wif = 'cMuqTgLkdQtsCD25HXDaStwjuBjb4TmdkV26FPjubjUGvRe8VRmy' #cQp5i1edstsXqyd1vKNU2HJyyhYrD5TxaiNh3NncnwjV9Y9r8qNV
address = 'mtyC8FT3vossVqhXQfrzWQ2WEqjm1bwi2u' #mt8kNQiejsjuZWAn5hse3nESfWb4hoadRU
netcode = 'XTN'
dst_address = 'mt8kNQiejsjuZWAn5hse3nESfWb4hoadRU'

if is_address_valid(address):
    print("address ok! :)")
else:
    print("invalid address, please try again")

if netcode == "XTN":
    URL = "https://testnet.blockexplorer.com/api/addrs/%s/utxo" % address
    pbtctNet = 'testnet'
if netcode == "BTC":
    URL = "https://blockexplorer.com/api/addrs/%s/utxo" % address
spendables = []
r = json.loads(urlopen(URL).read().decode("utf8"))
for u in r:
    coin_value = btc_to_satoshi(u.get("amount"))
    script = h2b(u.get("scriptPubKey"))
    previous_hash = h2b_rev(u.get("txid"))
    previous_index = u.get("vout")
    spendables.append(Spendable(coin_value, script, previous_hash, previous_index))

print spendables
if spendables != []:
    tx = create_signed_tx(spendables, payables=[dst_address], wifs=[wif], netcode=netcode)
    print 'here is the signed output transaction (' + netcode + '): '
    print(tx.as_hex())
    print '---------------------------------------'
    print helloblocksend(tx)
    print '---------------------------------------'
    print blockcyphersend(tx)
    print '---------------------------------------'
    print blockcypherREQsend(tx)
    print '---------------------------------------'
    print webbtcsend(tx)
    print '---------------------------------------'
    print pybitcointoolssend(tx)
    print '---------------------------------------'