75 lines
2.6 KiB
Python
75 lines
2.6 KiB
Python
import socket
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import time
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def send_sip_message():
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# 配置参数
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target_ip = "192.168.3.3" # 设备eth1的IP（转发入口）
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target_port = 5060 # 转发端口
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mac_local_ip = "192.168.3.33"# Mac的本地IP（与Via头部一致）
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sender_sip = "3011302" # 发送方SIP用户
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sender_ip = "192.168.9.57" # 设备eth0的IP（转发后源IP）
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receiver_sip = "3019901" # 接收方SIP用户
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receiver_ip = "192.168.9.4" # 目标IP
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# 生成唯一标识
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call_id = f"{int(time.time())}" # 基于时间戳的Call-ID
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tag = f"{int(time.time() % 1000000)}" # 随机tag
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branch = f"z9hG4bK{int(time.time())}" # Via分支标识
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# XML消息体（业务数据）
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xml_body = '''<?xml version="1.0" encoding="UTF-8" ?>
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<params>
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<to>sip:{receiver_sip}@{receiver_ip}:5060</to>
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<elev>1</elev>
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<direct>2</direct>
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<floor>13</floor>
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<family>2</family>
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<app>elev</app>
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<event>appoint</event>
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<event_url>/elev/appoint</event_url>
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</params>'''.format(receiver_sip=receiver_sip, receiver_ip=receiver_ip)
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# 计算消息体长度（字节数）
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content_length = len(xml_body.encode('utf-8'))
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# 构造SIP MESSAGE请求（严格使用\r\n换行）
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sip_message = f'''MESSAGE sip:{receiver_sip}@{receiver_ip}:5060 SIP/2.0
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Via: SIP/2.0/UDP {mac_local_ip}:5060;rport;branch={branch}
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From: <sip:{sender_sip}@{sender_ip}:5060>;tag={tag}
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To: <sip:{receiver_sip}@{receiver_ip}:5060>
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Call-ID: {call_id}@{mac_local_ip}
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CSeq: 20 MESSAGE
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Content-Type: text/plain
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Max-Forwards: 70
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User-Agent: DnakeVoip v1.0
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Content-Length: {content_length}
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{xml_body}'''
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# 替换换行符为\r\n（确保符合SIP协议）
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sip_message = sip_message.replace('\n', '\r\n')
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try:
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# 创建UDP socket并发送消息
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with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as sock:
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# 设置超时时间（5秒）
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sock.settimeout(5)
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# 发送消息
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sock.sendto(sip_message.encode('utf-8'), (target_ip, target_port))
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print(f"已发送SIP消息到 {target_ip}:{target_port}")
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print("\n发送的消息内容：")
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print(sip_message)
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# 尝试接收响应（可选）
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try:
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response, addr = sock.recvfrom(4096)
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print(f"\n收到来自 {addr} 的响应：")
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print(response.decode('utf-8', errors='ignore'))
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except socket.timeout:
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print("\n未收到响应（可能对方未回复或网络延迟）")
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except Exception as e:
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print(f"发送失败：{str(e)}")
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if __name__ == "__main__":
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send_sip_message() |