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#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <poll.h>
#define SA(ptr) ((struct sockaddr *)(ptr))
int main(int argc, char *argv[]){
if (argc<2){
fprintf(stderr, "arg1 must be set for port\n");
exit(-1);
}
int port = atoi(argv[1]);
if (port == 0) {
fprintf(stderr, "port must not be 0\n");
exit(-1);
}
int socketfd = socket(AF_INET, SOCK_STREAM, 0);
struct sockaddr_in address = {0};
address.sin_family = AF_INET;
address.sin_port = htons(port);
address.sin_addr.s_addr = inet_addr("127.0.0.1");
int con_err=connect(socketfd, SA(&address), sizeof(address));
if (con_err<0){
printf("connect error %d\n",con_err);
perror("socketfd error");
exit(-1);
}
struct pollfd fds[2] = {
{
0,
POLLIN,
0
},
{
socketfd,
POLLIN,
0
}
};
for (;;){
char buffer[30000]={0};
poll(fds, 2, 50000);
if (fds[0].revents & POLLIN) {
read(0, buffer, 30000);
send(socketfd, buffer, 30000, 0);
} else if(fds[1].revents & POLLIN){
//if(read(socketfd,buffer,30000)<0){ printf("\nREAD FAILED\n\n"); close(new_socket); break; }
if(recv(socketfd, buffer, 30000, 0)==0){
printf("recv got 0 --client\n\n");
exit(1);
}
printf("%s\n",buffer);
}
}
return 0;
}
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