配置：

1.兩臺linux用網線直接相連

2.手動配置兩臺linux的ipv6地址為：

ifconfig eth0 add?2001:da8:e000::1:1:1

ifconfig eth0 add?2001:da8:e000::1:1:2

如下所示：

[root@EmbedSky /]# ifconfig

eth0 ? ? ?Link encap:Ethernet ?HWaddr 10:23:45:67:89:AB

inet addr:192.168.142.21 ?Bcast:192.168.142.255 ?Mask:255.255.255.0

inet6 addr: 2001:da8:e000::1:1:1/0 Scope:Global ? ? ??//手動添加的地址

inet6 addr: fe80::1223:45ff:fe67:89ab/64 Scope:Link//ipv6中的Link地址相當于ipv中169...私有地址

UP BROADCAST RUNNING MULTICAST ?MTU:1500 ?Metric:1

RX packets:339 errors:0 dropped:0 overruns:0 frame:0

TX packets:141 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:39003 (38.0 KiB) ?TX bytes:9530 (9.3 KiB)

Interrupt:51 Base address:0x4000

3.接下來用ping6地址來測試：

[root@EmbedSky /]#ping6 2001:da8:e000::1:1:2

PING 2001:da8:e000::1:1:2 (2001:da8:e000::1:1:2): 56 data bytes

64 bytes from 2001:da8:e000::1:1:2: seq=0 ttl=64 time=4.788 ms

64 bytes from 2001:da8:e000::1:1:2: seq=1 ttl=64 time=1.268 ms

4.wireshark工具抓包可得：

網絡編程

具體的編程細節不解釋了，代碼測試通過......

UDP通信

server端：

#include #include #include #include #include #include #include #include #include #include int main(int argc, char **argv)

{

struct sockaddr_in6 s_addr;

struct sockaddr_in6 c_addr;

int sock;

socklen_t addr_len;

int len;

char buff[128];

char buf_ip[128];

if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) == -1) {

perror("socket");

exit(errno);

} else

printf("create socket.\n\r");

memset(&s_addr, 0, sizeof(struct sockaddr_in6));

s_addr.sin6_family = AF_INET6;

if (argv[2])

s_addr.sin6_port = htons(atoi(argv[2]));

else

s_addr.sin6_port = htons(4444);

if (argv[1])

inet_pton(AF_INET6, argv[1], &s_addr.sin6_addr);

else

s_addr.sin6_addr = in6addr_any;

if ((bind(sock, (struct sockaddr *) &s_addr, sizeof(s_addr))) == -1) {

perror("bind");

exit(errno);

} else

printf("bind address to socket.\n\r");

addr_len = sizeof(c_addr);

while (1) {

len = recvfrom(sock, buff, sizeof(buff) - 1, 0,

(struct sockaddr *) &c_addr, &addr_len);

if (len < 0) {

perror("recvfrom");

exit(errno);

}

buff[len] = '\0';

printf("receive from %s: buffer:%s\n\r",

inet_ntop(AF_INET6, &c_addr.sin6_addr, buf_ip, sizeof(buf_ip)),

buff);

}

return 0;

}

client端：

#include #include #include #include #include #include #include #include #include #include int main(int argc, char **argv)

{

struct sockaddr_in6 s_addr;

int sock;

int addr_len;

int len;

char buff[128];

if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) == -1) {

perror("socket");

exit(errno);

} else

printf("create socket.\n\r");

s_addr.sin6_family = AF_INET6;

if (argv[2])

s_addr.sin6_port = htons(atoi(argv[2]));

else

s_addr.sin6_port = htons(4444);

if (argv[1])

inet_pton(AF_INET6, argv[1], &s_addr.sin6_addr);

else {

printf("usage:./command ip port\n");

exit(0);

}

addr_len = sizeof(s_addr);

strcpy(buff, "hello i'm here");

len = sendto(sock, buff, strlen(buff), 0,

(struct sockaddr *) &s_addr, addr_len);

if (len < 0) {

printf("\n\rsend error.\n\r");

return 3;

}

printf("send success.\n\r");

return 0;

}

測試如下：

server端：

[root@zx bacnet-router]# ./server 2001:da8:e000::1:1:2 4444

create socket.

bind address to socket.

receive from 2001:da8:e000::1:1:1: buffer:hello i'm here

receive from 2001:da8:e000::1:1:1: buffer:hello i'm here

receive from 2001:da8:e000::1:1:2: buffer:hello i'm here

receive from 2001:da8:e000::1:1:2: buffer:hello i'm here

client端：

[root@zx bacnet-router]# ./client 2001:da8:e000::1:1:2 4444

create socket.

send success.

[root@zx bacnet-router]# ./client 2001:da8:e000::1:1:2 4444

create socket.

send success.

[root@zx bacnet-router]#

[root@EmbedSky /bacnet-router]# ./arm-client 2001:da8:e000::1:1:2 4444

create socket.

send success.

[root@EmbedSky /bacnet-router]# ./arm-client 2001:da8:e000::1:1:2 4444

create socket.

send success.

[root@EmbedSky /bacnet-router]#

TCP通信：

server端：

#include #include #include #include #include #include #include #include #include #include #define MAXBUF 1024

int main(int argc, char **argv)

{

int sockfd, new_fd;

socklen_t len;

/* struct sockaddr_in my_addr, their_addr; */ // IPv4

struct sockaddr_in6 my_addr, their_addr; // IPv6

unsigned int myport, lisnum;

char buf[MAXBUF + 1];

if (argv[1])

myport = atoi(argv[1]);

else

myport = 7838;

if (argv[2])

lisnum = atoi(argv[2]);

else

lisnum = 2;

/* if ((sockfd = socket(PF_INET, SOCK_STREAM, 0)) == -1) { */ // IPv4

if ((sockfd = socket(PF_INET6, SOCK_STREAM, 0)) == -1) { // IPv6

perror("socket");

exit(1);

} else

printf("socket created\n");

bzero(&my_addr, sizeof(my_addr));

/* my_addr.sin_family = PF_INET; */ // IPv4

my_addr.sin6_family = PF_INET6; // IPv6

/* my_addr.sin_port = htons(myport); */ // IPv4

my_addr.sin6_port = htons(myport); // IPv6

if (argv[3])

/* my_addr.sin_addr.s_addr = inet_addr(argv[3]); */ // IPv4

inet_pton(AF_INET6, argv[3], &my_addr.sin6_addr); // IPv6

else

/* my_addr.sin_addr.s_addr = INADDR_ANY; */ // IPv4

my_addr.sin6_addr = in6addr_any; // IPv6

/* if (bind(sockfd, (struct sockaddr *) &my_addr, sizeof(struct sockaddr)) */ // IPv4

if (bind(sockfd, (struct sockaddr *) &my_addr, sizeof(struct sockaddr_in6)) // IPv6

== -1) {

perror("bind");

exit(1);

} else

printf("binded\n");

if (listen(sockfd, lisnum) == -1) {

perror("listen");

exit(1);

} else

printf("begin listen\n");

while (1) {

len = sizeof(struct sockaddr);

if ((new_fd =

accept(sockfd, (struct sockaddr *) &their_addr,

&len)) == -1) {

perror("accept");

exit(errno);

} else

printf("server: got connection from %s, port %d, socket %d\n",

/* inet_ntoa(their_addr.sin_addr), */ // IPv4

inet_ntop(AF_INET6, &their_addr.sin6_addr, buf, sizeof(buf)), // IPv6

/* ntohs(their_addr.sin_port), new_fd); */ // IPv4

their_addr.sin6_port, new_fd); // IPv6

bzero(buf, MAXBUF + 1);

strcpy(buf, "This is sever to client!\n");

len = send(new_fd, buf, strlen(buf), 0);

if (len < 0) {

printf

("message '%s' error number:%d，error mes:'%s'\n", buf, errno, strerror(errno));

} else

printf("message'%s'success length: %d\n", buf, len);

bzero(buf, MAXBUF + 1);

len = recv(new_fd, buf, MAXBUF, 0);

if (len > 0)

printf("receive message:'%s'，length:%d\n", buf, len);

else

printf

("message error number:%d，error mes:'%s'\n", errno, strerror(errno));

}

close(sockfd);

return 0;

}

client端：

#include #include #include #include #include #include #include #include #include #define MAXBUF 1024

int main(int argc, char **argv)

{

int sockfd, len;

/* struct sockaddr_in dest; */ // IPv4

struct sockaddr_in6 dest; // IPv6

char buffer[MAXBUF + 1];

if (argc != 3) {

printf

("參數格式錯誤！正確用法如下：\n\t\t%s IP地址 端口\n\t比如:\t%s 127.0.0.1 80\n此程序用來從某個 IP 地址的服務器某個端口接收最多 MAXBUF 個字節的消息",

argv[0], argv[0]);

exit(0);

}

/* socket for tcp */

/* if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) { */ // IPv4

if ((sockfd = socket(AF_INET6, SOCK_STREAM, 0)) < 0) { // IPv6

perror("Socket");

exit(errno);

}

printf("socket created\n");

/* 初始化服務器端(對方)的地址和端口信息 */

bzero(&dest, sizeof(dest));

/* dest.sin_family = AF_INET; */ // IPv4

dest.sin6_family = AF_INET6; // IPv6

/* dest.sin_port = htons(atoi(argv[2])); */ // IPv4

dest.sin6_port = htons(atoi(argv[2])); // IPv6

/* if (inet_aton(argv[1], (struct in_addr *) &dest.sin_addr.s_addr) == 0) { */ // IPv4

if ( inet_pton(AF_INET6, argv[1], &dest.sin6_addr) < 0 ) { // IPv6

perror(argv[1]);

exit(errno);

}

printf("address created\n");

/* 連接服務器 */

if (connect(sockfd, (struct sockaddr *) &dest, sizeof(dest)) != 0) {

perror("Connect ");

exit(errno);

}

printf("server connected\n");

/* 接收對方發過來的消息，最多接收 MAXBUF 個字節 */

bzero(buffer, MAXBUF + 1);

/* 接收服務器來的消息 */

len = recv(sockfd, buffer, MAXBUF, 0);

if (len > 0)

printf("接收消息成功:'%s'，共%d個字節的數據\n",

buffer, len);

else

printf

("消息接收失敗！錯誤代碼是%d，錯誤信息是'%s'\n",

errno, strerror(errno));

bzero(buffer, MAXBUF + 1);

strcpy(buffer, "這是客戶端發給服務器端的消息\n");

/* 發消息給服務器 */

len = send(sockfd, buffer, strlen(buffer), 0);

if (len < 0)

printf

("消息'%s'發送失敗！錯誤代碼是%d，錯誤信息是'%s'\n",

buffer, errno, strerror(errno));

else

printf("消息'%s'發送成功，共發送了%d個字節！\n",

buffer, len);

/* 關閉連接 */

close(sockfd);

return 0;

}

總結

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