Linux平台：一个简单的TCP6 server的示例代码(socket)

#include <stdio.h>

#include <stdlib.h>

#include <errno.h>

#include <string.h>

#include <sys/types.h>

#include <netinet/in.h>

#include <sys/socket.h>

#include <sys/wait.h>

#include <unistd.h>

//#include <arpa/inet.h>

void error(const char *msg)

{

perror(msg);

exit(1);

}

int main(int argc, char *argv[])

{

int sockfd, newsockfd, portno;

socklen_t clilen;

char buffer[256];

structsockaddr_in6serv_addr, cli_addr;

int n;

sockfd = socket(AF_INET6, SOCK_STREAM, 0);

if (sockfd < 0)

error("ERROR opening socket");

bzero((char *) &serv_addr, sizeof(serv_addr));

portno = 5020;

serv_addr.sin6_family = AF_INET6;

serv_addr.sin6_addr = in6addr_any;//INADDR_ANY;

serv_addr.sin6_port = htons(portno);

if (bind(sockfd, (struct sockaddr *) &serv_addr,

sizeof(serv_addr)) < 0)

error("ERROR on binding");

listen(sockfd,5);

clilen = sizeof(cli_addr);

newsockfd = accept(sockfd,

(struct sockaddr *) &cli_addr,

&clilen);

if (newsockfd < 0)

error("ERROR on accept");

bzero(buffer,256);

n = read(newsockfd,buffer,255);

if (n < 0) error("ERROR reading from socket");

printf("Here is the message: %s\n",buffer);

n = write(newsockfd,"I got your message",18);

if (n < 0) error("ERROR writing to socket");

close(newsockfd);

close(sockfd);

}

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