Diff: DnsClient.cpp

Revision:

15:53715cc81c63

Parent:

9:a156d3de5647

Child:

16:269f652b4d0b

--- a/DnsClient.cpp	Tue Sep 03 09:16:55 2019 +0000
+++ b/DnsClient.cpp	Sat Sep 07 17:42:42 2019 +0000
@@ -128,6 +128,9 @@
 int DnsClient::getHostByName(const char* aHostname, IpAddress& aResult)
 {
     int ret = 0;
+    Timer   timer;
+
+    timer.start();
 
     // See if it's a numeric IP address
     if (inet_aton(aHostname, aResult)) {
@@ -141,7 +144,7 @@
     }
 
     // Find a socket to use
-    if (iUdp.begin(1024 + (time(NULL) & 0xF)) == 1) {
+    if (iUdp.begin(1024 + ((timer.read_ms() / 1000) & 0xF)) == 1) {
         // Try up to three times
         int retries = 0;
         //        while ((retries < 3) && (ret <= 0))
@@ -202,7 +205,7 @@
     //    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
     // As we only support one request at a time at present, we can simplify
     // some of this header
-    srand(time(NULL));
+    srand(time(NULL) + 2);
     iRequestId = rand() % 0xFFFF + 1;   // generate a random ID
     uint16_t    twoByteBuffer;
 
@@ -273,12 +276,15 @@
 int16_t DnsClient::processResponse(uint16_t aTimeout, IpAddress& aAddress)
 {
     time_t  startTime = time(NULL);
+    Timer   timer;
+
+    timer.start();
 
     // Wait for a response packet
     while (iUdp.parsePacket() <= 0) {
-        if ((time(NULL) - startTime) > aTimeout)
+        if (timer.read() > aTimeout)
             return TIMED_OUT;
-        wait(0.050);
+        wait_ms(50);
     }
 
     // We've had a reply!