log low-level network messages only when fDebug is set

src/main.cpp

@@ -1744,9 +1744,10 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
 {
     static map<unsigned int, vector<unsigned char> > mapReuseKey;
     RandAddSeedPerfmon();
-    if (fDebug)
+    if (fDebug) {
         printf("%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
         printf("received: %s (%d bytes)\n", strCommand.c_str(), vRecv.size());
+    }
     if (mapArgs.count("-dropmessagestest") && GetRand(atoi(mapArgs["-dropmessagestest"])) == 0)
     {
         printf("dropmessagestest DROPPING RECV MESSAGE\n");
@@ -1934,6 +1935,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
             pfrom->AddInventoryKnown(inv);
 
             bool fAlreadyHave = AlreadyHave(txdb, inv);
+            if (fDebug)
                 printf("  got inventory: %s  %s\n", inv.ToString().c_str(), fAlreadyHave ? "have" : "new");
 
             if (!fAlreadyHave)

src/net.h

@@ -282,10 +282,11 @@ public:
         nHeaderStart = vSend.size();
         vSend << CMessageHeader(pszCommand, 0);
         nMessageStart = vSend.size();
-        if (fDebug)
+        if (fDebug) {
             printf("%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
             printf("sending: %s ", pszCommand);
         }
+    }
 
     void AbortMessage()
     {
@@ -324,8 +325,10 @@ public:
             memcpy((char*)&vSend[nHeaderStart] + offsetof(CMessageHeader, nChecksum), &nChecksum, sizeof(nChecksum));
         }
 
+        if (fDebug) {
             printf("(%d bytes) ", nSize);
             printf("\n");
+        }
 
         nHeaderStart = -1;
         nMessageStart = -1;