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- #include <stdio.h>
- #include <stdlib.h>
- #include <unistd.h>
- #include <string.h>
- #include <arpa/inet.h>
- #include <sys/socket.h>
- #include <pthread.h>
- #define BUF_SIZE 100
- #define NAME_SIZE 20
- void * send_msg(void * arg);
- void * recv_msg(void * arg);
- void error_handling(char * msg);
- char name[NAME_SIZE]="[DEFAULT]";
- char msg[BUF_SIZE];
- int main(int argc, char *argv[])
- {
- int sock;
- struct sockaddr_in serv_addr;
- pthread_t snd_thread, rcv_thread;
- void * thread_return;
- if(argc!=4) {
- printf("Usage : %s <IP> <port> <name>\n", argv[0]);
- exit(1);
- }
- sprintf(name, "[%s]", argv[3]);
- sock=socket(PF_INET, SOCK_STREAM, 0);
- memset(&serv_addr, 0, sizeof(serv_addr));
- serv_addr.sin_family=AF_INET;
- serv_addr.sin_addr.s_addr=inet_addr(argv[1]);
- serv_addr.sin_port=htons(atoi(argv[2]));
- if(connect(sock, (struct sockaddr*)&serv_addr, sizeof(serv_addr))==-1)
- error_handling("connect() error");
- pthread_create(&snd_thread, NULL, send_msg, (void*)&sock);
- pthread_create(&rcv_thread, NULL, recv_msg, (void*)&sock);
- pthread_join(snd_thread, &thread_return);
- pthread_join(rcv_thread, &thread_return);
- close(sock);
- return 0;
- }
- void * send_msg(void * arg) // send thread main
- {
- int sock=*((int*)arg);
- char name_msg[NAME_SIZE+BUF_SIZE];
- while(1)
- {
- fgets(msg, BUF_SIZE, stdin);
- if(!strcmp(msg,"q\n")||!strcmp(msg,"Q\n"))
- {
- close(sock);
- exit(0);
- }
- sprintf(name_msg,"%s %s", name, msg);
- write(sock, name_msg, strlen(name_msg));
- }
- return NULL;
- }
- void * recv_msg(void * arg) // read thread main
- {
- int sock=*((int*)arg);
- char name_msg[NAME_SIZE+BUF_SIZE];
- int str_len;
- while(1)
- {
- str_len=read(sock, name_msg, NAME_SIZE+BUF_SIZE-1);
- if(str_len==-1)
- return (void*)-1;
- name_msg[str_len]=0;
- fputs(name_msg, stdout);
- }
- return NULL;
- }
- void error_handling(char *msg)
- {
- fputs(msg, stderr);
- fputc('\n', stderr);
- exit(1);
- }
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