--- /dev/null
+/****************************************************************
+ *
+ * Program daytime_tcp_server.c:
+ * Elementary TCP server for daytime service (port 13)
+ *
+ * Author: Simone Piccardi
+ * Apr. 2001
+ *
+ * Usage: daytimed
+ *
+ * $Id: ElemDaytimeTCPServer.c,v 1.1 2001/06/18 21:46:14 piccardi Exp $
+ *
+ ****************************************************************/
+/*
+ * Include needed headers
+ */
+#include <sys/types.h> /* predefined types */
+#include <unistd.h> /* include unix standard library */
+#include <arpa/inet.h> /* IP addresses conversion utiliites */
+#include <sys/socket.h> /* socket library */
+#include <stdio.h> /* include standard I/O library */
+#include <time.h>
+
+#define MAXLINE 80
+#define BACKLOG 10
+/* Program begin */
+void usage(void);
+int main(int argc, char *argv[])
+{
+/*
+ * Variables definition
+ */
+ int list_fd, conn_fd;
+ int i;
+ struct sockaddr_in serv_add;
+ char buffer[MAXLINE];
+ time_t timeval;
+ /*
+ * Input section: decode parameters passed in the calling
+ * Use getopt function
+ */
+ opterr = 0; /* don't want writing to stderr */
+ while ( (i = getopt(argc, argv, "h")) != -1) {
+ switch (i) {
+ /*
+ * Handling options
+ */
+ case 'h':
+ printf("Wrong -h option use\n");
+ usage();
+ return(0);
+ break;
+ case '?': /* unrecognized options */
+ printf("Unrecognized options -%c\n",optopt);
+ usage();
+ default: /* should not reached */
+ usage();
+ }
+ }
+ /* ***********************************************************
+ *
+ * Options processing completed
+ *
+ * Main code beginning
+ *
+ * ***********************************************************/
+ /* create socket */
+ if ( (list_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+ perror("Socket creation error");
+ exit(-1);
+ }
+ /* initialize address */
+ memset((void *)&serv_add, 0, sizeof(serv_add)); /* clear server address */
+ serv_add.sin_family = AF_INET; /* address type is INET */
+ serv_add.sin_port = htons(13); /* daytime port is 13 */
+ serv_add.sin_addr.s_addr = htonl(INADDR_ANY); /* connect from anywhere */
+ /* bind socket */
+ if (bind(list_fd, (struct sockaddr *)&serv_add, sizeof(serv_add)) < 0) {
+ perror("bind error");
+ exit(-1);
+ }
+ /* listen on socket */
+ if (listen(list_fd, BACKLOG) < 0 ) {
+ perror("listen error");
+ exit(-1);
+ }
+ /* write daytime to client */
+ while (1) {
+ if ( (conn_fd = accept(list_fd, (struct sockaddr *) NULL, NULL)) <0 ) {
+ perror("accept error");
+ exit(-1);
+ }
+ timeval = time(NULL);
+ snprintf(buffer, sizeof(buffer), "%.24s\r\n", ctime(&timeval));
+ if ( (write(conn_fd, buffer, strlen(buffer))) < 0 ) {
+ perror("write error");
+ exit(-1);
+ }
+ close(conn_fd);
+ }
+
+ /* normal exit */
+ exit(0);
+}
+/*
+ * routine to print usage info and exit
+ */
+void usage(void) {
+ printf("Simple daytime server\n");
+ printf("Usage:\n");
+ printf(" daytimed [-h] \n");
+ printf(" -h print this help\n");
+ exit(1);
+}
--- /dev/null
+/****************************************************************
+ *
+ * Program SimpleEchoTCPClient:
+ * Simple TCP client for echo service (port 7)
+ *
+ * Author: Simone Piccardi
+ * Jun. 2001
+ *
+ * Usage: echo -h give all info's
+ *
+ * $Id: ElemEchoTCPClient.c,v 1.1 2001/06/18 21:46:14 piccardi Exp $
+ *
+ ****************************************************************/
+/*
+ * Include needed headers
+ */
+#include <sys/types.h> /* predefined types */
+#include <unistd.h> /* include unix standard library */
+#include <arpa/inet.h> /* IP addresses conversion utiliites */
+#include <sys/socket.h> /* socket library */
+#include <stdio.h> /* include standard I/O library */
+
+#include "wrappers.h"
+
+#define MAXLINE 256
+void usage(void);
+void EchoClient(FILE * filein, int socket);
+
+/* Program begin */
+int main(int argc, char *argv[])
+{
+/*
+ * Variables definition
+ */
+ int sock_fd, i;
+ struct sockaddr_in serv_add;
+ /*
+ * Input section: decode parameters passed in the calling
+ * Use getopt function
+ */
+ opterr = 0; /* don't want writing to stderr */
+ while ( (i = getopt(argc, argv, "h")) != -1) {
+ switch (i) {
+ /*
+ * Handling options
+ */
+ case 'h':
+ printf("Wrong -h option use\n");
+ usage();
+ return(0);
+ break;
+ case '?': /* unrecognized options */
+ printf("Unrecognized options -%c\n",optopt);
+ usage();
+ default: /* should not reached */
+ usage();
+ }
+ }
+ /* ***********************************************************
+ *
+ * Options processing completed
+ *
+ * Main code beginning
+ *
+ * ***********************************************************/
+ /* create socket */
+ if ( (sock_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+ perror("Socket creation error");
+ return -1;
+ }
+ /* initialize address */
+ memset((void *) &serv_add, 0, sizeof(serv_add)); /* clear server address */
+ serv_add.sin_family = AF_INET; /* address type is INET */
+ serv_add.sin_port = htons(7); /* echo port is 7 */
+ /* build address using inet_pton */
+ if ( (inet_pton(AF_INET, argv[optind], &serv_add.sin_addr)) <= 0) {
+ perror("Address creation error");
+ return -1;
+ }
+ /* extablish connection */
+ if (connect(sock_fd, (struct sockaddr *)&serv_add, sizeof(serv_add)) < 0) {
+ perror("Connection error");
+ return -1;
+ }
+ /* read daytime from server */
+ EchoClient(stdin, sock_fd);
+ /* normal exit */
+ return 0;
+}
+/*
+ * routine to print usage info and exit
+ */
+void usage(void) {
+ printf("Take daytime from a remote host \n");
+ printf("Usage:\n");
+ printf(" daytime [-h] [-v] [host in dotted decimal form] \n");
+ printf(" -v set verbosity on\n");
+ printf(" -h print this help\n");
+ exit(1);
+}
+
+void EchoClient(FILE * filein, int socket)
+{
+ char sendbuff[MAXLINE], recvbuff[MAXLINE];
+ int nread;
+ while (fgets(sendbuff, MAXLINE, filein) != NULL) {
+ SockWrite(socket, sendbuff, strlen(sendbuff));
+ nread = SockRead(socket, recvbuff, strlen(sendbuff));
+ recvbuff[nread] = 0;
+ fputs(recvbuff, stdout);
+ }
+ return;
+}
--- /dev/null
+/****************************************************************
+ *
+ * Program echo_tcp_server.c:
+ * Elementary TCP server for echo service (port 7)
+ *
+ * Author: Simone Piccardi
+ * Jun. 2001
+ *
+ * Usage: echod
+ *
+ * $Id: ElemEchoTCPServer.c,v 1.1 2001/06/18 21:46:14 piccardi Exp $
+ *
+ ****************************************************************/
+/*
+ * Include needed headers
+ */
+#include <sys/types.h> /* predefined types */
+#include <unistd.h> /* include unix standard library */
+#include <arpa/inet.h> /* IP addresses conversion utiliites */
+#include <sys/socket.h> /* socket library */
+#include <stdio.h> /* include standard I/O library */
+#include <time.h>
+
+#include "wrappers.h"
+
+#define BACKLOG 10
+#define MAXLINE 256
+
+/* Subroutines declaration */
+void usage(void);
+void SockEcho(int sockfd);
+/* Program beginning */
+int main(int argc, char *argv[])
+{
+/*
+ * Variables definition
+ */
+ int list_fd, conn_fd;
+ pid_t pid;
+ struct sockaddr_in serv_add;
+ /*
+ * Input section: decode parameters passed in the calling
+ * Use getopt function
+ */
+ int i;
+ opterr = 0; /* don't want writing to stderr */
+ while ( (i = getopt(argc, argv, "h")) != -1) {
+ switch (i) {
+ /*
+ * Handling options
+ */
+ case 'h':
+ printf("Wrong -h option use\n");
+ usage();
+ return(0);
+ break;
+ case '?': /* unrecognized options */
+ printf("Unrecognized options -%c\n",optopt);
+ usage();
+ default: /* should not reached */
+ usage();
+ }
+ }
+ /* ***********************************************************
+ *
+ * Options processing completed
+ *
+ * Main code beginning
+ *
+ * ***********************************************************/
+ /* create socket */
+ if ( (list_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+ perror("Socket creation error");
+ exit(-1);
+ }
+ /* initialize address */
+ memset((void *)&serv_add, 0, sizeof(serv_add)); /* clear server address */
+ serv_add.sin_family = AF_INET; /* address type is INET */
+ serv_add.sin_port = htons(7); /* echo port is 7 */
+ serv_add.sin_addr.s_addr = htonl(INADDR_ANY); /* connect from anywhere */
+ /* bind socket */
+ if (bind(list_fd, (struct sockaddr *)&serv_add, sizeof(serv_add)) < 0) {
+ perror("bind error");
+ exit(-1);
+ }
+ /* listen on socket */
+ if (listen(list_fd, BACKLOG) < 0 ) {
+ perror("listen error");
+ exit(-1);
+ }
+ /* handle echo to client */
+ while (1) {
+ /* accept connection */
+ if ( (conn_fd = accept(list_fd, NULL, NULL)) < 0) {
+ perror("accept error");
+ exit(-1);
+ }
+ /* fork to handle connection */
+ if ( (pid = fork()) < 0 ){
+ perror("fork error");
+ exit(-1);
+ }
+ if (pid == 0) { /* child */
+ close(list_fd); /* close listening socket */
+ SockEcho(conn_fd); /* handle echo */
+ exit(0);
+ } else { /* parent */
+ close(conn_fd); /* close connected socket */
+ }
+ }
+ /* normal exit, never reached */
+ exit(0);
+}
+/*
+ * routine to print usage info and exit
+ */
+void usage(void) {
+ printf("Simple daytime server\n");
+ printf("Usage:\n");
+ printf(" daytimed [-h] \n");
+ printf(" -h print this help\n");
+ exit(1);
+}
+/*
+ * routine to handle echo for connection
+ */
+void SockEcho(int sockfd) {
+ char buffer[MAXLINE];
+ int nread, nwrite;
+
+ /* main loop, reading 0 char means client close connection */
+ while ( (nread = read(sockfd, buffer, MAXLINE)) != 0) {
+ printf("Letti %d bytes, %s ", nread, buffer);
+ nwrite = SockWrite(sockfd, buffer, nread);
+ }
+ return;
+}
+++ /dev/null
-/****************************************************************
- *
- * Program daytime_tcp_client.c:
- * Simple TCP client for daytime service (port 13)
- *
- * Author: Simone Piccardi
- * Apr. 2001
- *
- * Usage: daytime -h give all info's
- *
- * $Id: SimpleDaytimeTCPClient.c,v 1.2 2001/06/12 22:17:22 piccardi Exp $
- *
- ****************************************************************/
-/*
- * Include needed headers
- */
-#include <sys/types.h> /* predefined types */
-#include <unistd.h> /* include unix standard library */
-#include <arpa/inet.h> /* IP addresses conversion utiliites */
-#include <sys/socket.h> /* socket library */
-#include <stdio.h> /* include standard I/O library */
-
-#define MAXLINE 80
-/* Program begin */
-void usage(void);
-int main(int argc, char *argv[])
-{
-/*
- * Variables definition
- */
- int sock_fd;
- int i, nread;
- struct sockaddr_in serv_add;
- char buffer[MAXLINE];
- /*
- * Input section: decode parameters passed in the calling
- * Use getopt function
- */
- opterr = 0; /* don't want writing to stderr */
- while ( (i = getopt(argc, argv, "h")) != -1) {
- switch (i) {
- /*
- * Handling options
- */
- case 'h':
- printf("Wrong -h option use\n");
- usage();
- return(0);
- break;
- case '?': /* unrecognized options */
- printf("Unrecognized options -%c\n",optopt);
- usage();
- default: /* should not reached */
- usage();
- }
- }
- /* ***********************************************************
- *
- * Options processing completed
- *
- * Main code beginning
- *
- * ***********************************************************/
- /* create socket */
- if ( (sock_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
- perror("Socket creation error");
- return -1;
- }
- /* initialize address */
- memset((void *) &serv_add, 0, sizeof(serv_add)); /* clear server address */
- serv_add.sin_family = AF_INET; /* address type is INET */
- serv_add.sin_port = htons(13); /* daytime port is 13 */
- /* build address using inet_pton */
- if ( (inet_pton(AF_INET, argv[optind], &serv_add.sin_addr)) <= 0) {
- perror("Address creation error");
- return -1;
- }
- /* extablish connection */
- if (connect(sock_fd, (struct sockaddr *)&serv_add, sizeof(serv_add)) < 0) {
- perror("Connection error");
- return -1;
- }
- /* read daytime from server */
- while ( (nread = read(sock_fd, buffer, MAXLINE)) > 0) {
- buffer[nread]=0;
- if (fputs(buffer, stdout) == EOF) { /* write daytime */
- perror("fputs error");
- return -1;
- }
- }
- /* error on read */
- if (nread < 0) {
- perror("Read error");
- return -1;
- }
- /* normal exit */
- return 0;
-}
-/*
- * routine to print usage info and exit
- */
-void usage(void) {
- printf("Take daytime from a remote host \n");
- printf("Usage:\n");
- printf(" daytime [-h] [-v] [host in dotted decimal form] \n");
- printf(" -v set verbosity on\n");
- printf(" -h print this help\n");
- exit(1);
-}
+++ /dev/null
-/****************************************************************
- *
- * Program daytime_tcp_server.c:
- * Elementary TCP server for daytime service (port 13)
- *
- * Author: Simone Piccardi
- * Apr. 2001
- *
- * Usage: daytimed
- *
- * $Id: SimpleDaytimeTCPServer.c,v 1.2 2001/05/19 20:47:03 piccardi Exp $
- *
- ****************************************************************/
-/*
- * Include needed headers
- */
-#include <sys/types.h> /* predefined types */
-#include <unistd.h> /* include unix standard library */
-#include <arpa/inet.h> /* IP addresses conversion utiliites */
-#include <sys/socket.h> /* socket library */
-#include <stdio.h> /* include standard I/O library */
-#include <time.h>
-
-#define MAXLINE 80
-#define BACKLOG 10
-/* Program begin */
-void usage(void);
-int main(int argc, char *argv[])
-{
-/*
- * Variables definition
- */
- int list_fd, conn_fd;
- int i;
- struct sockaddr_in serv_add;
- char buffer[MAXLINE];
- time_t timeval;
- /*
- * Input section: decode parameters passed in the calling
- * Use getopt function
- */
- opterr = 0; /* don't want writing to stderr */
- while ( (i = getopt(argc, argv, "h")) != -1) {
- switch (i) {
- /*
- * Handling options
- */
- case 'h':
- printf("Wrong -h option use\n");
- usage();
- return(0);
- break;
- case '?': /* unrecognized options */
- printf("Unrecognized options -%c\n",optopt);
- usage();
- default: /* should not reached */
- usage();
- }
- }
- /* ***********************************************************
- *
- * Options processing completed
- *
- * Main code beginning
- *
- * ***********************************************************/
- /* create socket */
- if ( (list_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
- perror("Socket creation error");
- exit(-1);
- }
- /* initialize address */
- memset((void *)&serv_add, 0, sizeof(serv_add)); /* clear server address */
- serv_add.sin_family = AF_INET; /* address type is INET */
- serv_add.sin_port = htons(13); /* daytime port is 13 */
- serv_add.sin_addr.s_addr = htonl(INADDR_ANY); /* connect from anywhere */
- /* bind socket */
- if (bind(list_fd, (struct sockaddr *)&serv_add, sizeof(serv_add)) < 0) {
- perror("bind error");
- exit(-1);
- }
- /* listen on socket */
- if (listen(list_fd, BACKLOG) < 0 ) {
- perror("listen error");
- exit(-1);
- }
- /* write daytime to client */
- while (1) {
- if ( (conn_fd = accept(list_fd, (struct sockaddr *) NULL, NULL)) <0 ) {
- perror("accept error");
- exit(-1);
- }
- timeval = time(NULL);
- snprintf(buffer, sizeof(buffer), "%.24s\r\n", ctime(&timeval));
- if ( (write(conn_fd, buffer, strlen(buffer))) < 0 ) {
- perror("write error");
- exit(-1);
- }
- close(conn_fd);
- }
-
- /* normal exit */
- exit(0);
-}
-/*
- * routine to print usage info and exit
- */
-void usage(void) {
- printf("Simple daytime server\n");
- printf("Usage:\n");
- printf(" daytimed [-h] \n");
- printf(" -h print this help\n");
- exit(1);
-}
projects / gapil.git / commitdiff