def handshake_in(sock, msg, torrent, peer_id, info_hash, addr_to_peer,
sock_to_peer, peers, active_peers, ids_to_peers, size,
handshook):
#print('Handshake in')
peer = None
if (sock.getpeername()[0] in addr_to_peer):
peer = addr_to_peer[sock.getpeername()[0]]
else:
peer = Peer(sock.getpeername()[0],
sock.getpeername()[1], torrent.num_pieces,
torrent.piece_len, sock)
if (not "\x13BitTorrent protocol" == msg[0:20]):
print("Invalid handshake received.")
return False
if (not msg[28:48] == info_hash):
print("Invalid handshake info_hash.")
return False
addr_to_peer[peer.ip] = peer
if (not peer in peers):
peers.append(peer)
if (not peer in active_peers):
active_peers.append(peer)
peer.set_id(msg[48:])
ids_to_peers[peer.id] = peer
sock_to_peer[sock] = peer
try:
if not peer in handshook:
handshake = "\x13BitTorrent protocol\x00\x00\x00\x00\x00\x00\x00\x00"
handshake += info_hash + peer_id
sock.sendall(handshake)
handshook.append(peer)
# Responded to handshake
return True
except:
return False
