finished the first homework? needs testing tho.

timeserver/timeserver.c

@@ -4,6 +4,7 @@
 // constants
 // timeserver port is 8888
 #define TIMEPORT "8888"
+#define BUFFER_SIZE 1024
 
 // prototypes
 
@@ -11,10 +12,53 @@
 int main(int argc, char **argv)
 {
     // initialize program (variables and structs)
+    bool quitFlag = true;
+    int socketTimeFD;
+    char message[BUFFER_SIZE];
+    struct sockaddr_in serverAddr, clientAddr;
+    memset(&serverAddr, 0, sizeof(serverAddr));
+    memset(&clientAddr, 0, sizeof(clientAddr));
     // define a UDP socket
+    socketTimeFD = socket(AF_INET, SOCK_DGRAM, 0);
+    if(socketTimeFD < 0)
+    {
+        printf("Unable to create the socket.");
+        return -1;
+    }
     // bind the UDP socket to port 8888 / TIMEPORT
+    serverAddr.sin_family = AF_INET;
+    serverAddr.sin_addr.s_addr = INADDR_ANY;
+    serverAddr.sin_port = TIMEPORT;
+    int bindCheck = bind(socketTimeFD, &serverAddr, sizeof(serverAddr));
+    if(bindCheck < 0)
+    {
+        printf("Unable to bind the socket to the port or address.\n Is either in use?");
+        return -1;
+    }
     // while loop to see if the "time\r\n" has been received (recv call?)
+    int clientAddrLen;
+    int receivedDataLen;
+    printf("Timeserver listening on port: %d\n", TIMEPORT);
+    while(quitFlag)
+    {
+        // grab the data from the client
+        receivedDataLen = recvfrom(socketTimeFD, message, BUFFER_SIZE, MSG_WAITALL, &clientAddr, &clientAddrLen);
+        message[receivedDataLen] = '\0';
         // if "time\r\n" is received, then send() back the linux epoch.
+        if(message == "time\r\n")
+        {
+            //
+            char *reply = time(NULL);
+            sendto(socketTimeFD, reply, strlen(reply), 0, &clientAddr, clientAddrLen);
+        }
+        else if(message == "close\r\n" || message == "quit\r\n" || message == "q\r\n")
+        {
+            //
+            quitFlag = false;
+        }
+    }
+    // close the socket
+    close(socketTimeFD);
     // profit???
     return 0;
 }