Initial commit
This commit is contained in:
Thomas Wade
commit
5bb16cf20a
107
client1.c
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107
client1.c
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <strings.h>
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#define BUFFERT 512
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int duration (struct timeval *start,struct timeval *stop, struct timeval *delta);
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int create_client_socket (int port, char* ipaddr);
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struct sockaddr_in sock_serv;
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int main (int argc, char**argv){
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struct timeval start, stop, delta;
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int sfd,fd;
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char buf[BUFFERT];
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off_t count=0, m,sz;
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long int n;
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int l=sizeof(struct sockaddr_in);
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struct stat buffer;
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if (argc != 4){
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printf("Error usage : %s <ip_serv> <port_serv> <filename>\n",argv[0]);
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return EXIT_FAILURE;
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}
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sfd=create_client_socket(atoi(argv[2]), argv[1]);
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if ((fd = open(argv[3],O_RDONLY))==-1){
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perror("open fail");
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return EXIT_FAILURE;
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}
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if (stat(argv[3],&buffer)==-1){
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perror("stat fail");
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return EXIT_FAILURE;
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}
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else
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sz=buffer.st_size;
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bzero(&buf,BUFFERT);
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if(connect(sfd,(struct sockaddr*)&sock_serv,l)==-1){
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perror("conexion error\n");
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exit (3);
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}
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gettimeofday(&start,NULL);
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n=read(fd,buf,BUFFERT);
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while(n){
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if(n==-1){
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perror("read fails");
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return EXIT_FAILURE;
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}
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m=sendto(sfd,buf,n,0,(struct sockaddr*)&sock_serv,l);
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if(m==-1){
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perror("send error");
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return EXIT_FAILURE;
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}
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count+=m;
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bzero(buf,BUFFERT);
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n=read(fd,buf,BUFFERT);
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}
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m=sendto(sfd,buf,0,0,(struct sockaddr*)&sock_serv,l);
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gettimeofday(&stop,NULL);
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duration(&start,&stop,&delta);
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printf("Nombre d'octets transférés : %lld\n",count);
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printf("Sur une taille total de : %lld \n",sz);
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printf("Pour une durée total de : %ld.%d \n",delta.tv_sec,delta.tv_usec);
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close(sfd);
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return EXIT_SUCCESS;
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}
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int duration (struct timeval *start,struct timeval *stop,struct timeval *delta)
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{
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suseconds_t microstart, microstop, microdelta;
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microstart = (suseconds_t) (100000*(start->tv_sec))+ start->tv_usec;
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microstop = (suseconds_t) (100000*(stop->tv_sec))+ stop->tv_usec;
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microdelta = microstop - microstart;
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delta->tv_usec = microdelta%100000;
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delta->tv_sec = (time_t)(microdelta/100000);
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if((*delta).tv_sec < 0 || (*delta).tv_usec < 0)
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return -1;
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else
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return 0;
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}
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int create_client_socket (int port, char* ipaddr){
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int l;
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int sfd;
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sfd = socket(PF_INET,SOCK_STREAM,0);
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if (sfd == -1){
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perror("socket fail");
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return EXIT_FAILURE;
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}
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l=sizeof(struct sockaddr_in);
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bzero(&sock_serv,l);
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sock_serv.sin_family=AF_INET;
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sock_serv.sin_port=htons(port);
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if (inet_pton(AF_INET,ipaddr,&sock_serv.sin_addr)==0){
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printf("Invalid IP adress\n");
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return EXIT_FAILURE;
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}
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return sfd;
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}
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104
server1.c
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104
server1.c
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@ -0,0 +1,104 @@
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/*
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* ENGR2782 - CN Assignment
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* Your challenge is to format the following code in a readable manner, anwsering the questions in the comments.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include <time.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <strings.h>
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#define BUFFERT 512
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#define BACKLOG 1
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int create_server_socket (int port);
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struct sockaddr_in sock_serv,sock_clt;
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int main(int argc, char** argv){
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int sfd, fd;
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unsigned int length = sizeof(struct sockaddr_in);
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long int n, m, count = 0;
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unsigned int nsid;
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ushort clt_port;
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char buffer[BUFFERT], filename[256];
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char dst[INET_ADDRSTRLEN];
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time_t intps;
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struct tm* tmi;
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/* (A) repalce the following line with suitable getopt() functionality */
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if(argc!=2) {perror("Usage ./a.out <num_port> <file2send>\n");exit(3);}
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int l;
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int yes=1;
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/* The following function call should use; Internet version 4 protocols with a sequenced, reliable, two-way connection based byte streams */
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sfd = socket( /* Q) What goes here? */ , /* Q) What goes here? */ , 0);
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/* See; man socket */
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if (sfd == -1) {perror("socket fail");return EXIT_SUCCESS;}
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if(setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR,&yes,sizeof(int)) == -1 ) {perror("setsockopt erreur");exit(5);}
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l = sizeof(struct sockaddr_in);
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bzero(&sock_serv,l);
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/* The following assignment should use; Internet version 4 protocols constant */
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sock_serv.sin_family=/* Q) What goes here? */;
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/* See; man socket */
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sock_serv.sin_port = htons(atoi(argv[1]));
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/* Set the IP address to allow connections on any network interface on the server */
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sock_serv.sin_addr.s_addr = htonl(/* Q) What goes here? */);
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/* See; man 4 ip */
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if (bind(sfd,(struct sockaddr*)&sock_serv,l) == -1) {perror("bind fail"); exit(EXIT_FAILURE);}
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bzero(buffer,BUFFERT);
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listen(sfd,BACKLOG);
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/* accept() takes "struct sockaddr_in" and returns non-negative integer that is a descriptor for the accepted socket.
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* The missing arguement in the line below will need to have the *address* of the variable required, as the value is updated when the socket is update. eg, &variable
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*/
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nsid = accept(sfd, (struct sockaddr*)&sock_clt, /* Q) What goes here? */);
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/* See; man 2 accept */
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if (nsid == -1) {perror("accept fail"); return EXIT_FAILURE;}
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else {
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if(inet_ntop(AF_INET,&sock_clt.sin_addr,dst,INET_ADDRSTRLEN)==NULL) {perror("erreur socket");exit (4);}
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clt_port=ntohs(sock_clt.sin_port);
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printf("connection : %s:%d\n",dst,clt_port);
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bzero(filename,256);
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intps = time(NULL);
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tmi = localtime(&intps);
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bzero(filename,256);
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sprintf(filename,"saved-file.%d.%d.%d.%d.%d.%d", tmi->tm_mday, tmi->tm_mon+1, 1900+tmi->tm_year, tmi->tm_hour, tmi->tm_min, tmi->tm_sec);
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printf("Creating the copied output file : %s\n", filename);
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if ((fd = open(filename, O_CREAT|O_WRONLY, 0600)) == -1) {perror("open fail"); exit (3);}
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bzero(buffer,BUFFERT);
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n=recv(nsid,buffer,BUFFERT,0);
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while(n) {
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if(n==-1) {perror("recv fail");exit(5);}
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if((m=write(fd,buffer,n))==-1) {perror("write fail");exit (6);}
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count=count+m;
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bzero(buffer,BUFFERT);
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n=recv(nsid,buffer,BUFFERT,0);
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}
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close(sfd);
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close(fd);
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}
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close(nsid);
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printf("End of transmission with %s.%d\n",dst,clt_port);
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/* Select the appropriate variable in the following function call argument */
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printf("Number of octets received : %ld \n", /* Q) What goes here? */);
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return EXIT_SUCCESS;
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}
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