'adb forward --list'

def forward_list(self):

    version = self.version()
    if ((int(version[1]) <= 1) and (int(version[2]) <= 0) and (int(version[3]) < 31)):
        raise EnvironmentError('Low    adb    version.')
    lines = self.raw_cmd('forward', '--list').communicate()[0].decode('utf-8').strip().splitlines()
    return [line.strip().split() for line in lines]
