Linux实验指导书(8)

int main() {

int sockfd; int len;

struct sockaddr_in address; int result; char string[256]; char rcv[256];

/* Create a socket for the client. */

sockfd = socket(AF_INET, SOCK_STREAM, 0);

/* Name the socket, as agreed with the server. */

address.sin_family = AF_INET;

address.sin_addr.s_addr = inet_addr(\ address.sin_port = htons(9734); len = sizeof(address);

/* Now connect our socket to the server's socket. */

result = connect(sockfd, (struct sockaddr *)&address, len);

if(result == -1) {

perror(\ exit(1); }

/* We can now read/write via sockfd. */

printf(\ fgets(string,sizeof(string),stdin);

write(sockfd, string, sizeof(string)); read(sockfd, rcv, sizeof(rcv)); printf(\ close(sockfd); exit(0); }

//程序清单 8-2

/* Make the necessary includes and set up the variables. */

36

#include #include #include #include #include #include

int main() {

int server_sockfd, client_sockfd; int server_len, client_len; struct sockaddr_in server_address; struct sockaddr_in client_address; char string[256]; char *ans = \

/* Create an unnamed socket for the server. */

server_sockfd = socket(AF_INET, SOCK_STREAM, 0);

/* Name the socket. */

server_address.sin_family = AF_INET;

server_address.sin_addr.s_addr = inet_addr(\ server_address.sin_port = htons(9734); server_len = sizeof(server_address);

bind(server_sockfd, (struct sockaddr *)&server_address, server_len);

/* Create a connection queue and wait for clients. */

listen(server_sockfd, 5); while(1) { char ch;

printf(\

/* Accept a connection. */

client_len = sizeof(client_address); client_sockfd = accept(server_sockfd,

(struct sockaddr *)&client_address, &client_len);

printf(\

37

printf(\

= %u\\n\

/* We can now read/write to client on client_sockfd. */

read(client_sockfd, string, sizeof(string));

printf(\ write(client_sockfd, ans, sizeof(ans)); close(client_sockfd); }

close(server_sockfd); }

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