added min/max calcs

includes/main.h

@@ -28,4 +28,9 @@ struct ping_pkt {
     char msg[64 - sizeof(struct icmphdr)];
 };
 
+struct ping_delta {
+    int ms_top;
+    int ms_bottom;
+};
+
 #endif //MAIN_H

srcs/main.c

@@ -108,11 +108,45 @@ void sig_handler(int sig) {
     }
 }
 
+struct ping_delta get_min(struct ping_delta a, struct ping_delta b) {
+    if (a.ms_top < b.ms_top) {
+        return a;
+    } else if (b.ms_top < a.ms_top) {
+        return b;
+    } else {
+        if (a.ms_bottom < b.ms_bottom) {
+            return a;
+        }
+        return b;
+    }
+}
+
+struct ping_delta get_max(struct ping_delta a, struct ping_delta b) {
+    if (a.ms_top > b.ms_top) {
+        return a;
+    } else if (b.ms_top > a.ms_top) {
+        return b;
+    } else {
+        if (a.ms_bottom > b.ms_bottom) {
+            return a;
+        }
+        return b;
+    }
+}
+
 int main(int argc, char** argv) {
     struct arguments arguments;
     int timeout = 3000;
     struct timespec recvt;
     struct pollfd fds[1];
+    struct ping_delta min;
+    struct ping_delta max;
+
+    min.ms_bottom = INT32_MAX;
+    min.ms_top = INT32_MAX;
+
+    max.ms_bottom = 0;
+    max.ms_top = 0;
 
     arguments.verbose = 0;
     arguments.ttl = 64;
@@ -153,7 +187,7 @@ int main(int argc, char** argv) {
 
     send_ping();
 
-    while (true) {
+    while (!stop) {
         int ret = poll(fds, 1, timeout);
         if (ret > 0) {
             if (fds[0].revents & POLLIN) {
@@ -171,13 +205,18 @@ int main(int argc, char** argv) {
                 struct ip* ip_header = (struct ip*)buf;
                 struct icmphdr* icmp_reply = (struct icmphdr*)(buf + (ip_header->ip_hl << 2));
 
-                int rtt_n =
+                struct ping_delta tmp;
+
+                tmp.ms_top =
                     ((recvt.tv_sec * 1000 + recvt.tv_nsec / 1000000) - (sendt.tv_sec * 1000 + sendt.tv_nsec / 1000000));
-                int rtt_r = ((recvt.tv_nsec - sendt.tv_nsec) % 1000000 / 1000);
+                tmp.ms_bottom = ((recvt.tv_nsec - sendt.tv_nsec) % 1000000 / 1000);
 
                 printf("%zd bytes from %s: icmp_seq=%d ttl=%d time=%d.%d ms \n", bytes_received, arguments.args[0],
-                       icmp_reply->un.echo.sequence, ip_header->ip_ttl, rtt_n, rtt_r);
+                       icmp_reply->un.echo.sequence, ip_header->ip_ttl, tmp.ms_top, tmp.ms_bottom);
                 recvd++;
+
+                max = get_max(max, tmp);
+                min = get_min(min, tmp);
             }
         } else if (ret == 0) {
             printf("No reply received within the timeout period\n");
@@ -186,14 +225,10 @@ int main(int argc, char** argv) {
         }
 
         pause();
-
-        if (stop) {
-            break;
-        }
     }
     printf("---- %s ping statistics ----\n", arguments.args[0]);
     printf("%zu packets transmitted, %zu packets received, %zu%% packet loss\n", xmit, recvd,
            (xmit - recvd) / xmit * 100);
-    // printf("round-trip min/avg/max/stddev = %f/%f/%f/%f ms\n");
+    printf("round-trip min/avg/max/stddev = %d.%d/%d.%d/%%.3f/%%.3f ms\n", min.ms_top, min.ms_bottom, max.ms_top, max.ms_bottom);
     close(sock);
 }