67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
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#include "../basic.h"
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#include <time.h>
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int main(int argc, char **argv) {
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int listenfd, connfd, n;
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struct sockaddr_in servaddr;
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char buff[INET_ADDRSTRLEN];
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short port;
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if (argc != 2 ){
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printf("usage: daytimesrv <porta>\n");
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exit(0);
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}
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if( (listenfd = socket(AF_INET, SOCK_STREAM, 0)) < 0){
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printf("socket error\n");
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exit(0);
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}
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servaddr.sin_family = AF_INET;
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servaddr.sin_addr.s_addr = htonl(INADDR_ANY); /* wildcard address */
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servaddr.sin_port = htons(atoi(argv[1])); /* server port */
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if( (bind(listenfd, (struct sockaddr *) &servaddr, sizeof(servaddr))) < 0){
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printf("bind error\n"); exit(0);
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}
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if( listen(listenfd, 5) < 0 )
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{ printf("listen error\n");
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exit(0);
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}
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struct sockaddr_in client_addr;
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unsigned int client_addr_len = sizeof(client_addr);
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for ( ; ; ) {
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if( (connfd = accept(listenfd, (struct sockaddr *) &client_addr, &client_addr_len)) < 0)
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{ printf("accept error\n");
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exit(0);
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}
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int split = fork();
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if ( split < 0) {
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printf("fork for iterative server failed\n");
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exit(-1);
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}
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if (split == 0){
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close(listenfd);
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inet_ntop(AF_INET, &(client_addr.sin_addr), buff, INET_ADDRSTRLEN); // get client address
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port = ntohs(client_addr.sin_port);// get client port
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fprintf (stdout,"%s%c%hu\n",buff,':',port);
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exit(0);
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} else {
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printf("connection managed by a child process\n");
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close(connfd);
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}
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}
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}
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