int clientSocket; char buffer[1024]; struct sockaddr_in serverAddr; socklen_t addr_size; /*---- Create the socket. The three arguments are: ----*/ /* 1) Internet domain 2) Stream socket 3) Default protocol (TCP
client->gw->server的流程中,由于gw侧发送了一些unknown skb再加上client端发送了一些out-of-window的包,导致进入到server的netfilter阶段会被识别出来INVALID异常,这个异常被识别后直接清除netfilter保持的该有的流信息,继而异常的skb抵达DNAT阶段后无法转化端口(因为判断转化的流信息没有了),最终skb无法成功转化port端口...
简介:我个人的Linux TCP server和client测试源码,C语言(2)(★firecat推荐★) 二、echo源码2如下,main.c #include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include <sys/epoll.h>#include <sys/socket.h>#include <arpa/inet.h>#include <netinet/in.h>#include <sys/re...
/* Set all bits of the padding field to 0 */ memset(serverAddr.sin_zero,'\0',sizeof serverAddr.sin_zero); /*--- Connect the socket to the server using the address struct ---*/ addr_size =sizeof serverAddr; connect(clientSocket, (struct sockaddr *) &serverAddr, addr_size); /*...
结论:第3行(client给server发生了握手最后一次ack)和第4行(client端给server发送了第一组数据)出现的并发问题。 挥手阶段的bug 这个问题根因同上:rcu+hash表的使用问题,在挥手阶段发起close()的一方竞争的乱序的收到了一个ack和一个fin ack触发,导致socket在最后接收fin ack时候没有匹配到任何一个socket,又只能拿...
CLOSE(Server And Client):Server 和 CLient 关闭连接后的状态 正常情况下,客户端的状态转换流程如下: CLOSED -> SYN_SENT -> ESTABLISHED -> FIN_WAIT_1 -> FIN_WAIT_2 -> TIME_WAIT -> CLOSED 正常情况下,服务端的状态转换流程如下: CLOSED -> LISTEN -> SYN_RCVD -> ESTABLISHED -> CLOSE_WAIT -...
首先我们先来了解两种软件协议: 1 c/s结构:全称Client/Server结构,是指客户端与服务器的结构,就像qq,微信等软件,通过客户端与服务器交互 2.B/S结构:全称Browser/Server,即浏览器与服务器结构,如火狐,谷歌等等,通过浏览器与服务器交互 这两种架构各有千秋,但都离不开网络的支持,网络编程就是在一定协议下,实现...
Hello, I am looking for a simple and good solution. I still found this, looks good. It is a must with socket, because my customer use also a C# TCP connection. How can I achieve that the server sends an event and the client then receives it and…
virtually all client-server projects using sockets in c. this edition has been expanded to include new advancements such as support for ipv6 as well as detailed defensive programming strategies. if you program using java, be sure to check out this book’s companion, tcp/ip sockets in java: ...
// client and echo it back (if the echo option is not // disabled). // Compile: // cl -o Server Server.c ws2_32.lib // Command line options: // server [-p:x] [-i:IP] [-o] // -p:x Port number to listen on // -i:str Interface to listen on ...