fixed getting MTU on windows, add address to log messages with MTU

Signed-off-by: R4SAS <r4sas@i2pmail.org>

libi2pd/RouterContext.cpp

@@ -902,7 +902,7 @@ namespace i2p
 				if (mtu)
 				{
 					addr->ssu->mtu = mtu;
-					LogPrint (eLogDebug, "Router: MTU for ", v4 ? "ipv4" : "ipv6", " address is set to ", mtu);
+					LogPrint (eLogDebug, "Router: MTU for ", v4 ? "ipv4" : "ipv6", " address ", addr->host.to_string(), " is set to ", mtu);
 				}
 			}
 		}

libi2pd/util.cpp

@@ -173,7 +173,7 @@ namespace net
 
 		if(dwRetVal != NO_ERROR)
 		{
-			LogPrint(eLogError, "NetIface: GetMTU(): Enclosed GetAdaptersAddresses() call has failed");
+			LogPrint(eLogError, "NetIface: GetMTU: Enclosed GetAdaptersAddresses() call has failed");
 			FREE(pAddresses);
 			return fallback;
 		}
@@ -185,7 +185,7 @@ namespace net
 
 			pUnicast = pCurrAddresses->FirstUnicastAddress;
 			if(pUnicast == nullptr)
-				LogPrint(eLogError, "NetIface: GetMTU(): Not a unicast IPv4 address, this is not supported");
+				LogPrint(eLogError, "NetIface: GetMTU: Not a unicast IPv4 address, this is not supported");
 
 			for(int i = 0; pUnicast != nullptr; ++i)
 			{
@@ -193,10 +193,13 @@ namespace net
 				sockaddr_in* localInterfaceAddress = (sockaddr_in*) lpAddr;
 				if(localInterfaceAddress->sin_addr.S_un.S_addr == inputAddress.sin_addr.S_un.S_addr)
 				{
-					auto result = pAddresses->Mtu;
+					char addr[INET_ADDRSTRLEN];
+					inet_ntop(AF_INET, &(((struct sockaddr_in *)localInterfaceAddress)->sin_addr), addr, INET_ADDRSTRLEN);
+
+					auto result = pCurrAddresses->Mtu;
 					FREE(pAddresses);
 					pAddresses = nullptr;
-					LogPrint(eLogInfo, "NetIface: GetMTU(): Using ", result, " bytes for IPv4");
+					LogPrint(eLogInfo, "NetIface: GetMTU: Using ", result, " bytes for IPv4 address ", addr);
 					return result;
 				}
 				pUnicast = pUnicast->Next;
@@ -204,7 +207,7 @@ namespace net
 			pCurrAddresses = pCurrAddresses->Next;
 		}
 
-		LogPrint(eLogError, "NetIface: GetMTU(): No usable unicast IPv4 addresses found");
+		LogPrint(eLogError, "NetIface: GetMTU: No usable unicast IPv4 addresses found");
 		FREE(pAddresses);
 		return fallback;
 	}
@@ -229,7 +232,7 @@ namespace net
 
 		if (dwRetVal != NO_ERROR)
 		{
-			LogPrint(eLogError, "NetIface: GetMTU(): Enclosed GetAdaptersAddresses() call has failed");
+			LogPrint(eLogError, "NetIface: GetMTU: Enclosed GetAdaptersAddresses() call has failed");
 			FREE(pAddresses);
 			return fallback;
 		}
@@ -241,7 +244,7 @@ namespace net
 			PIP_ADAPTER_UNICAST_ADDRESS firstUnicastAddress = pCurrAddresses->FirstUnicastAddress;
 			pUnicast = pCurrAddresses->FirstUnicastAddress;
 			if (pUnicast == nullptr)
-				LogPrint(eLogError, "NetIface: GetMTU(): Not a unicast IPv6 address, this is not supported");
+				LogPrint(eLogError, "NetIface: GetMTU: Not a unicast IPv6 address, this is not supported");
 
 			for (int i = 0; pUnicast != nullptr; ++i)
 			{
@@ -258,10 +261,13 @@ namespace net
 
 				if (found_address)
 				{
-					auto result = pAddresses->Mtu;
+					char addr[INET6_ADDRSTRLEN];
+					inet_ntop(AF_INET6, &(((struct sockaddr_in6 *)localInterfaceAddress)->sin6_addr), addr, INET6_ADDRSTRLEN);
+
+					auto result = pCurrAddresses->Mtu;
 					FREE(pAddresses);
 					pAddresses = nullptr;
-					LogPrint(eLogInfo, "NetIface: GetMTU(): Using ", result, " bytes for IPv6");
+					LogPrint(eLogInfo, "NetIface: GetMTU: Using ", result, " bytes for IPv6 address ", addr);
 					return result;
 				}
 				pUnicast = pUnicast->Next;
@@ -270,7 +276,7 @@ namespace net
 			pCurrAddresses = pCurrAddresses->Next;
 		}
 
-		LogPrint(eLogError, "NetIface: GetMTU(): No usable unicast IPv6 addresses found");
+		LogPrint(eLogError, "NetIface: GetMTU: No usable unicast IPv6 addresses found");
 		FREE(pAddresses);
 		return fallback;
 	}
@@ -302,7 +308,7 @@ namespace net
 		}
 		else
 		{
-			LogPrint(eLogError, "NetIface: GetMTU(): Address family is not supported");
+			LogPrint(eLogError, "NetIface: GetMTU: Address family is not supported");
 			return fallback;
 		}
 	}