From dd0c526c726af7e20de9c82c6c68056f093fc7d1 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Sun, 29 Apr 2018 14:17:30 +0200
Subject: Make ntp sync more robust with retries

---
 src/Database.cpp | 26 ++++++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/src/Database.cpp b/src/Database.cpp
index 492cc7d..cf72c6a 100644
--- a/src/Database.cpp
+++ b/src/Database.cpp
@@ -113,15 +113,29 @@ namespace odhtdb
         {
             if(ntpThread)
                 delete ntpThread;
+            
+            const int ntpFetchTimestampRetries = 5;
 
             ntpThread = new thread([]()
             {
                 ntp::NtpClient ntpClient("pool.ntp.org");
                 while(databaseCount > 0)
                 {
-                    ntp::NtpTimestamp ntpTimestamp = ntpClient.getTimestamp();
-                    timeOffset = time(nullptr) - ntpTimestamp.seconds;
-                    timestampSynced = true;
+                    for(int i = 0; i < ntpFetchTimestampRetries; ++i)
+                    {
+                        try
+                        {
+                            ntp::NtpTimestamp ntpTimestamp = ntpClient.getTimestamp();
+                            timeOffset = time(nullptr) - ntpTimestamp.seconds;
+                            timestampSynced = true;
+                            break;
+                        }
+                        catch(ntp::NtpClientException &e)
+                        {
+                            Log::warn("Failed to sync clock with ntp server, reason: %s. Try #%d", e.what(), i);
+                            this_thread::sleep_for(500ms);
+                        }
+                    }
                     // TODO: Also use timestamp fraction (milliseconds)
                     this_thread::sleep_for(60s);
                 }
@@ -200,7 +214,7 @@ namespace odhtdb
                 auto requestedData = databaseStorage.getStorage(*nodeToSeed.getRequestHash());
                 if(!requestedData)
                 {
-                    Log::warn("No data found for hash %s, unable to serve peer", nodeToSeed.getRequestHash()->toString().c_str());
+                    Log::debug("No data found for hash %s, unable to serve peer", nodeToSeed.getRequestHash()->toString().c_str());
                     return true;
                 }
                 
@@ -212,7 +226,7 @@ namespace odhtdb
                     node.put(requestResponseInfoHash, Value((u8*)requestedData->data.data, requestedData->data.size), [](bool ok)
                     {
                         if(!ok)
-                            Log::warn("Failed to put response for old data for 'create' data");
+                            Log::error("Failed to put response for old data for 'create' data");
                     });
                 }
                 
@@ -221,7 +235,7 @@ namespace odhtdb
                     node.put(requestResponseInfoHash, Value((u8*)requestedObject->data.data, requestedObject->data.size), [](bool ok)
                     {
                         if(!ok)
-                            Log::warn("Failed to put response for old data for 'add' data");
+                            Log::error("Failed to put response for old data for 'add' data");
                     });
                 }
             }
-- 
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