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[[Net003]] * 単純な server program [#e4a92e2a] #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include <sys/socket.h> #include <netdb.h> #include <unistd.h> #include <errno.h> extern int errno; int main(int argc, char* argv[]) { struct sockaddr_in saddr; struct sockaddr_in caddr; socklen_t calen; int sd; int cd; int port; /* Check the command-line arguments */ if(argc != 2) { fprintf(stderr, "Usage: %s port\n", argv[0]); return (-1); } port = atoi(argv[1]); if(port <= 0) { fprintf(stderr, "Illegal port number (%d)\n", port); return (-1); } /* Set the server address */ memset(&saddr, 0, sizeof(saddr)); memset(&caddr, 0, sizeof(caddr)); saddr.sin_family = AF_INET; saddr.sin_port = htons((u_short)port); saddr.sin_addr.s_addr = INADDR_ANY; /* Create socket for listen port and bind the server address */ if((sd = socket( PF_INET, SOCK_STREAM, 0)) == -1) return errno; if(bind(sd, (const struct sockaddr*)&saddr, sizeof(saddr)) == -1) { close(sd); return errno; } /* Listen the service port */ if(listen(sd, 5) == -1) { close(sd); return errno; } while(1) { /* Clear the address for accept */ memset(&caddr, 0, sizeof(caddr)); calen = sizeof(caddr); /* Dequeue the requested connection in the listen socket */ if((cd = accept(sd,(struct sockaddr*)&caddr, &calen)) == -1) { close(sd); return errno; } send(cd, "Hello\r\n", 7, 0); close(cd); } /* Server done. (Never come) */ close(sd); return 0; }
タイムスタンプを変更しない
[[Net003]] * 単純な server program [#e4a92e2a] #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include <sys/socket.h> #include <netdb.h> #include <unistd.h> #include <errno.h> extern int errno; int main(int argc, char* argv[]) { struct sockaddr_in saddr; struct sockaddr_in caddr; socklen_t calen; int sd; int cd; int port; /* Check the command-line arguments */ if(argc != 2) { fprintf(stderr, "Usage: %s port\n", argv[0]); return (-1); } port = atoi(argv[1]); if(port <= 0) { fprintf(stderr, "Illegal port number (%d)\n", port); return (-1); } /* Set the server address */ memset(&saddr, 0, sizeof(saddr)); memset(&caddr, 0, sizeof(caddr)); saddr.sin_family = AF_INET; saddr.sin_port = htons((u_short)port); saddr.sin_addr.s_addr = INADDR_ANY; /* Create socket for listen port and bind the server address */ if((sd = socket( PF_INET, SOCK_STREAM, 0)) == -1) return errno; if(bind(sd, (const struct sockaddr*)&saddr, sizeof(saddr)) == -1) { close(sd); return errno; } /* Listen the service port */ if(listen(sd, 5) == -1) { close(sd); return errno; } while(1) { /* Clear the address for accept */ memset(&caddr, 0, sizeof(caddr)); calen = sizeof(caddr); /* Dequeue the requested connection in the listen socket */ if((cd = accept(sd,(struct sockaddr*)&caddr, &calen)) == -1) { close(sd); return errno; } send(cd, "Hello\r\n", 7, 0); close(cd); } /* Server done. (Never come) */ close(sd); return 0; }
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