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client.c
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client.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h> /* Internet domain header */
#include <netdb.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <sys/wait.h>
#ifndef PORT
#define PORT 54321
#endif
#define LINE_LENGTH 1024
int main(int argc, char **argv) {
if (argc != 2){
fprintf(stderr, "usage: ./client <filename>\n");
exit(1);
}
char query[11];
strncpy(query, argv[1], 5);
query[5] = '-';
char write_data[1024];
strncpy(write_data, argv[1], strlen(argv[1]));
write_data[strlen(argv[1])] = ' ';
write_data[strlen(argv[1]) + 1] = '\0';
FILE *file = fopen(argv[1], "r");
if (file == NULL){
perror("fopen");
exit(1);
}
//initialize server address
struct sockaddr_in server;
server.sin_family = AF_INET;
server.sin_port = htons(PORT);
memset(&server.sin_zero, 0, 8);
struct addrinfo *ai;
char *hostname = "127.0.0.1";
/* this call declares memory and populates ailist */
getaddrinfo(hostname, NULL, NULL, &ai);
server.sin_addr = ((struct sockaddr_in *) ai->ai_addr)->sin_addr;
// free the memory that was allocated by getaddrinfo for this list
freeaddrinfo(ai);
char data[LINE_LENGTH];
for (int t = 0; t < 1000; t++){
// create socket
int soc = socket(AF_INET, SOCK_STREAM, 0);
if (soc == -1) {
perror("client: socket");
exit(1);
}
int ret = connect(soc, (struct sockaddr *)&server, sizeof(struct sockaddr_in));
if (ret == -1) {
perror("client: connect");
exit(1);
}
fscanf(file, "%s\n", data);
strncat(write_data, data, 35);
write_data[35] = '\0';
printf("writing: %s\n", write_data);
write(soc, write_data, 35 * sizeof(char));
for (int a = 0; a < strlen(data); a++){
write_data[strlen(argv[1]) + a + 1] = '\0';
}
char dump[2];
read(soc, dump, 2);
sleep(1);
close(soc);
}
fclose(file);
return 0;
}