75 lines
1.9 KiB
Python
75 lines
1.9 KiB
Python
"""TCP-BLE bridge link"""
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from __future__ import absolute_import
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import socket
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from binascii import hexlify
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from .base import BaseLink, LinkTimeoutException, LinkOpenException
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HOST, PORT = "127.0.0.1", 6000
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_write_chunk_size = 20 # 20 as in android dumps
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def recvall(sock, size):
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data = ""
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while len(data) < size:
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try:
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pkt = sock.recv(size - len(data))
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except socket.timeout:
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raise LinkTimeoutException()
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data += pkt
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return data
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class TCPLink(BaseLink):
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def __init__(self, *args, **kwargs):
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super(TCPLink, self).__init__(*args, **kwargs)
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self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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self.sock.settimeout(self.timeout)
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self.connected = False
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def __enter__(self):
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return self
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def __exit__(self, exc_type, exc_value, traceback):
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self.close()
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def scan(self):
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res = [("Android UART Bridge", HOST + ":" + str(PORT))]
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return res
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def open(self, port):
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p = port.partition(":")
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host = p[0]
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port = int(p[2], 10)
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print(host, port)
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try:
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self.sock.connect((host, port))
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except socket.timeout:
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raise LinkOpenException
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self.connected = True
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def close(self):
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if self.connected:
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self.sock.close()
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self.connected = False
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def read(self, size):
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data = recvall(self.sock, size)
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if data and self.dump:
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print("<", hexlify(data).upper())
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return data
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def write(self, data):
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if self.dump:
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print(">", hexlify(data).upper())
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size = len(data)
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ofs = 0
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while size:
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chunk_sz = min(size, _write_chunk_size)
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self.sock.sendall(data[ofs : ofs + chunk_sz])
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ofs += chunk_sz
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size -= chunk_sz
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__all__ = ["TCPLink"]
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