| #!/usr/bin/env python3 |
| # |
| # Copyright (c) 2021, The OpenThread Authors. |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are met: |
| # 1. Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # 2. Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # 3. Neither the name of the copyright holder nor the |
| # names of its contributors may be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| # POSSIBILITY OF SUCH DAMAGE. |
| # |
| import socket |
| import sys |
| import ipaddress |
| |
| # USAGE: python3 udp_send.py [destination_ipv6] [destination_port] [message] [hop_limit] |
| # udp_send sends a udp packet to an ipv6 address. |
| |
| |
| def main(): |
| args = sys.argv[1:] |
| assert len(args) == 4 |
| destination_ipv6 = args[0] |
| destination_port = args[1] |
| message = bytes(args[2], 'utf-8') |
| hop_limit = int(args[3]) |
| sock = socket.socket( |
| socket.AF_INET6, # Internet |
| socket.SOCK_DGRAM) # UDP |
| |
| address = ipaddress.ip_address(destination_ipv6) |
| if address.is_multicast: |
| sock.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_MULTICAST_HOPS, hop_limit) |
| else: |
| sock.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_UNICAST_HOPS, hop_limit) |
| sock.sendto(message, (destination_ipv6, int(destination_port))) |
| sock.close() |
| |
| |
| if __name__ == '__main__': |
| main() |