Start change to electrumx servers

README.md

@@ -44,6 +44,7 @@ https://live.blockcypher.com/ltc/tx/3b936180daf05adcd7e9f04b60e1ba9a4a6db486c0ad
 Aim is to provide a simple, class-based API which makes switching between different coins and mainnet and testnet, and adding new coins, all very easy.
 
 Roadmap:
+* Replaceable transactions
 * Change from explorers to electrumx servers
 * Correct fee detection algorithm
 * Extend wallets to make transactions

cryptos/coins/base.py

@@ -2,6 +2,7 @@
 from ..blocks import mk_merkle_proof
 from .. import segwit_addr
 from ..explorers import blockchain
+from ..electrumx_client.rpc import ElectrumXClient
 from ..keystore import *
 from ..wallet import *
 from ..py3specials import *
@@ -21,6 +22,16 @@ class BaseCoin(object):
     script_magicbyte = None
     segwit_hrp = None
     explorer = blockchain
+    client = ElectrumXClient
+    client_kwargs = {
+        'server_file': 'bitcoin.json',
+        'servers': (),
+        'host': None,
+        'port': 50001,
+        'timeout': 15,
+        'max_servers': 5,
+        'loop': None
+    }
     is_testnet = False
     address_prefixes = ()
     testnet_overrides = {}
@@ -73,12 +84,23 @@ def __init__(self, testnet=False, **kwargs):
         else:
             self.script_prefixes = ()
         self.secondary_hashcode = self.secondary_hashcode or self.hashcode
+        self._rpc_client = None
+
+    @property
+    def rpc_client(self):
+        """
+        Connect to remove server
+        """
+        if not self._rpc_client:
+            self._rpc_client = self.client(**self.client_kwargs)
+        return self._rpc_client
+
 
     def unspent(self, *addrs):
         """
         Get unspent transactions for addresses
         """
-        return self.explorer.unspent(*addrs, coin_symbol=self.coin_symbol)
+        return self.rpc_client.unspent(*addrs)
 
     def history(self, *addrs, **kwargs):
         """

cryptos/coins/bitcoin.py

@@ -10,6 +10,9 @@ class Bitcoin(BaseCoin):
     magicbyte = 0
     script_magicbyte = 5
     segwit_hrp = "bc"
+    client_kwargs = {
+        'server_file': 'bitcoin.json',
+    }
 
     testnet_overrides = {
         'display_name': "Bitcoin Testnet",
@@ -19,6 +22,9 @@ class Bitcoin(BaseCoin):
         'segwit_hrp': 'tb',
         'hd_path': 1,
         'wif_prefix': 0xef,
+        'client_kwargs': {
+            'server_file': 'bitcoin_testnet.json',
+        },
         'xprv_headers': {
             'p2pkh': 0x04358394,
             'p2wpkh-p2sh': 0x044a4e28,

cryptos/electrumx_client/__init__.py

@@ -0,0 +1 @@
+from .rpc import *