1.发布n2n的稳定版本以避免发布兼容问题
https://github.com/ntop/n2n/releases
这里选择3.0
2.编译安装
./autogen.sh ./configure make # optionally install make install
3.打开端口号码的防火墙(这里使用22个端口)
iptables -D INPUT -p udp -m udp --dport 2222 -j ACCEPT
iptables -I INPUT -p udp -m udp --dport 2222 -j ACCEPT
iptables -D INPUT -p tcp --dport 2222 -j ACCEPT
iptables -I INPUT -p tcp --dport 2222 -j ACCEPT
4.打开超级节点
supernode -p 2222&
5.开启edge
sudo edge -c haopeng -k haopeng123 -a 192.168.1.2 -f -l 112.74.171.82:2222&
sudo edge -c haopeng -k haopeng123 -a 192.168.1.3 -f -l 112.74.171.82:2222&
6.验证
192.168.1.2和192.168.1.3互ping
查看边缘虚拟频道:
边缘之间的简单的接口测试程序:
==================================server==================================
/* File Name: server.c /
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#define DEFAULT_PORT 5679
#define MAXLINE 409
int main(int argc, char* argv)
{
int socket_fd, connect_fd;
struct sockaddr_in servaddr;
char buff[4096];
int n;
//启动插座
if( (socket_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1 ){
printf("create socket error: %s(errno: %d)n",strerror(errno),errno);
exit(0);
}
//初始化
memset(&servaddr, 0, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = htonl(INADDR_ANY);// IP地址设置为INADDR_ANY,允许系统自动访问主机IP地址。
servaddr.sin_port = htons(DEFAULT_PORT);//端口设置为DEFAULT_PORT
//将本地地址绑定到创建的接口
if( bind(socket_fd, (struct sockaddr*)&servaddr, sizeof(servaddr)) == -1){
printf("bind socket error: %s(errno: %d)n",strerror(errno),errno);
exit(0);
}
//如果存在客户端连接,启动监控
if( listen(socket_fd, 10) == -1){
printf("listen socket error: %s(errno: %d)n",strerror(errno),errno);
exit(0);
}
printf("======waiting for client's request======n");
while(1){
// 阻止到有一个客户端连接或浪费更多的CPU资源。
if( (connect_fd = accept(socket_fd, (struct sockaddr*)NULL, NULL)) == -1){
printf("accept socket error: %s(errno: %d)",strerror(errno),errno);
continue;
}
//接收客户发送的数据
n = recv(connect_fd, buff, MAXLINE, 0);
//向客户端发送响应数据
if(!fork()){
if(send(connect_fd, "Hello,you are connected!n", 26,0) == -1)
perror("send error");
close(connect_fd);
exit(0);
}
buff[n] = ' ';
printf("recv msg from client: %sn", buff);
close(connect_fd);
}
close(socket_fd);
}
//======================cli=====================
/* File Name: client.c / #include #include #include #include #include #include #include
#define MAXLINE 4096
int main(int argc, char* argv)
{
int sockfd, n,rec_len;
char recvline[4096], sendline[4096];
char buf[MAXLINE];
struct sockaddr_in servaddr;
if( argc != 2){
printf("usage: ./client n");
exit(0);
}
if( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0){
printf("create socket error: %s(errno: %d)n", strerror(errno),errno);
exit(0);
}
memset(&servaddr, 0, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(5679);
if( inet_pton(AF_INET, argv[1], &servaddr.sin_addr)
printf("inet_pton error for %sn",argv[1]);
exit(0);
}
if( connect(sockfd, (struct sockaddr*)&servaddr, sizeof(servaddr)) < 0){
printf("connect error: %s(errno: %d)n",strerror(errno),errno);
exit(0);
}
printf("send msg to server: n");
fgets(sendline, 4096, stdin);
if( send(sockfd, sendline, strlen(sendline), 0) < 0)
{
printf("send msg error: %s(errno: %d)n", strerror(errno), errno);
exit(0);
}
if((rec_len = recv(sockfd, buf, MAXLINE,0)) == -1) {
perror("recv error");
exit(1);
}
buf[rec_len] = ' ';
printf("Received : %s ",buf);
close(sockfd);
exit(0);
}
