一.传输层socket(四层socket,普通socket) 可参考本人以下博客: Windows Socket编程之UDP实现大文件的传输:http://blog.csdn.net/luchengtao11/article/details/71016222 Windows Socket编程之TCP实现大文件的传输:http://blog.csdn.net/luchengtao11/article/details/71012580 (1)创建 socket(AF_INET, SOCK_S
#!/bin/env python # -*- coding: UTF-8 -*- # 必须以root权限运行 import socket import sys import time import random from struct import * # 计算校验和 def checksum(msg): s = 0 # 每次取2个字节 for i in range(0,len(msg),2): w = (ord(msg[i]) << 8) + (ord(msg[i+1])) s = s+w
转自 http://blog.csdn.net/sjin_1314/article/details/18178329 原文:Characterization and Measurement of TCP Traversal through NATs and Firewalls 原作者:Saikat Guha Paul Francis [摘要] 近些年,标准化社区已经开发出一些UDP穿透NAT/防火墙的技术(也就是,在NAT之后的主机之间建立UDP流).然而,由于TCP连接建立的不对称特点