尝试在python中通过TCP创建原始发送/接收

import socket

# 创建原始套接字
raw_socket = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_TCP)

# 设置IP头部选项，允许构造自定义IP头部
raw_socket.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)

# 构造TCP头部
source_ip = '192.168.0.1'  # 源IP地址
destination_ip = '192.168.0.2'  # 目标IP地址
source_port = 12345  # 源端口号
destination_port = 80  # 目标端口号
sequence_number = 123456789  # 序列号
acknowledgment_number = 0  # 确认号
tcp_flags = 0x02  # TCP标志位，这里为SYN标志位
window_size = socket.htons(5840)  # 窗口大小
tcp_checksum = 0  # 校验和，先设置为0
urgent_pointer = 0  # 紧急指针

tcp_header = struct.pack('!HHLLBBHHH', source_port, destination_port, sequence_number, acknowledgment_number, (5 << 4), tcp_flags, window_size, tcp_checksum, urgent_pointer)

# 构造IP头部
ip_version = 4  # IP版本
ip_header_length = 5  # IP头部长度
ip_tos = 0  # 服务类型
ip_total_length = 0  # IP数据包总长度，先设置为0
ip_id = 54321  # 标识符
ip_frag_offset = 0  # 分片偏移
ip_ttl = 255  # 存活时间
ip_protocol = socket.IPPROTO_TCP  # 上层协议，这里为TCP
ip_checksum = 0  # 校验和，先设置为0
source_address = socket.inet_aton(source_ip)  # 源IP地址
destination_address = socket.inet_aton(destination_ip)  # 目标IP地址

ip_header = struct.pack('!BBHHHBBH4s4s', (ip_version << 4) + ip_header_length, ip_tos, ip_total_length, ip_id, ip_frag_offset, ip_ttl, ip_protocol, ip_checksum, source_address, destination_address)

# 计算IP头部校验和
ip_checksum = calculate_checksum(ip_header)

# 将计算得到的IP头部校验和填入IP头部
ip_header = struct.pack('!BBHHHBBH4s4s', (ip_version << 4) + ip_header_length, ip_tos, ip_total_length, ip_id, ip_frag_offset, ip_ttl, ip_protocol, ip_checksum, source_address, destination_address)

# 发送IP头部和TCP头部
raw_socket.sendto(ip_header + tcp_header, (destination_ip, 0))

# 接收数据
data, address = raw_socket.recvfrom(65535)

# 关闭原始套接字
raw_socket.close()