Migrate to new project structure.

libp2p/host/basic_host.py

@@ -0,0 +1,90 @@
+import multiaddr
+
+from .host_interface import IHost
+
+# Upon host creation, host takes in options,
+# including the list of addresses on which to listen.
+# Host then parses these options and delegates to its Network instance,
+# telling it to listen on the given listen addresses.
+
+
+class BasicHost(IHost):
+
+    # default options constructor
+    def __init__(self, _network):
+        self.network = _network
+        self.peerstore = self.network.peerstore
+
+    def get_id(self):
+        """
+        :return: peer_id of host
+        """
+        return self.network.get_peer_id()
+
+    def get_network(self):
+        """
+        :return: network instance of host
+        """
+        return self.network
+
+    def get_peerstore(self):
+        """
+        :return: peerstore of the host (same one as in its network instance)
+        """
+        return self.peerstore
+
+    def get_mux(self):
+        """
+        :return: mux instance of host
+        """
+
+    def get_addrs(self):
+        """
+        :return: all the multiaddr addresses this host is listening too
+        """
+        p2p_part = multiaddr.Multiaddr('/p2p/{}'.format(self.get_id().pretty()))
+
+        addrs = []
+        for transport in self.network.listeners.values():
+            for addr in transport.get_addrs():
+                addrs.append(addr.encapsulate(p2p_part))
+        return addrs
+
+    def set_stream_handler(self, protocol_id, stream_handler):
+        """
+        set stream handler for host
+        :param protocol_id: protocol id used on stream
+        :param stream_handler: a stream handler function
+        :return: true if successful
+        """
+        return self.network.set_stream_handler(protocol_id, stream_handler)
+
+    # protocol_id can be a list of protocol_ids
+    # stream will decide which protocol_id to run on
+    async def new_stream(self, peer_id, protocol_ids):
+        """
+        :param peer_id: peer_id that host is connecting
+        :param protocol_id: protocol id that stream runs on
+        :return: true if successful
+        """
+        stream = await self.network.new_stream(peer_id, protocol_ids)
+        return stream
+
+    async def connect(self, peer_info):
+        """
+        connect ensures there is a connection between this host and the peer with
+        given peer_info.peer_id. connect will absorb the addresses in peer_info into its internal
+        peerstore. If there is not an active connection, connect will issue a
+        dial, and block until a connection is open, or an error is
+        returned.
+
+        :param peer_info: peer_info of the host we want to connect to
+        :type peer_info: peer.peerinfo.PeerInfo
+        """
+        self.peerstore.add_addrs(peer_info.peer_id, peer_info.addrs, 10)
+
+        # there is already a connection to this peer
+        if peer_info.peer_id in self.network.connections:
+            return
+
+        await self.network.dial_peer(peer_info.peer_id)