Hey guys,
I'm not sure if this is something wrong with xCode or my code itself (or perhaps a permissions issue in mac os x). Anyways my code looks like this:
Code:
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>
#include <errno.h>
unsigned short port;
int rSocket;
int clientSocket;
int serverSocket;
struct sockaddr_in clientAddr;
struct sockaddr_in serverAddr;
struct equation
{
float first, second;
char operation[15];
};
int main (int argc, const char * argv[]) {
if (argc < 2)
{
printf("Usage: calculator [port]\n--using: 65530\n");
port = 65530;
}
else
port = (unsigned short) atoi(argv[1]);
memset(&serverAddr, 0, sizeof(serverAddr));
memset(&clientAddr, 0, sizeof(clientAddr));
serverAddr.sin_family = AF_INET;
serverAddr.sin_port = htons(port);
serverAddr.sin_addr.s_addr = htonl(INADDR_ANY);
serverSocket = socket(AF_INET, SOCK_STREAM, 0);
//Bind
if (bind(serverSocket, (struct sockaddr *) &serverAddr, sizeof(serverAddr)) < 1)
{
printf("Error: bind()\nError Number:%d\n", errno);
exit(-1);
}
if (listen(serverSocket, 1) < 0)
{
printf("Error: listen()\nError Number:%d\n", errno);
exit(-1);
}
for (;;)
{
unsigned int length = sizeof(clientAddr);
if (clientSocket = accept(serverSocket, (struct sockaddr *) &clientAddr, &length) < 0)
{
printf("error: accept()\n");
exit(-1);
}
struct equation current;
printf("%d\n", sizeof(current));
int bR = 0;
if (recv(clientSocket, ¤t, sizeof(current), 0) < 0)
{
printf("Error: recv()");
exit(-1);
}
printf("bR: %d\n", bR);
printf("%f %s %f\n", current.first, current.operation, current.second);
}
}
Running yields this:
Code:
sudo ./calculator
Usage: calculator [port]
--using: 65530
Error: bind()
Error Number:0
TIA