specify bandwidth for floodfill

Config.cpp

@@ -123,7 +123,7 @@ namespace config {
       ("service",   value<bool>()->zero_tokens()->default_value(false), "Router will use system folders like '/var/lib/i2pd'")
       ("notransit", value<bool>()->zero_tokens()->default_value(false), "Router will not accept transit tunnels at startup")
       ("floodfill", value<bool>()->zero_tokens()->default_value(false), "Router will be floodfill")
-      ("bandwidth", value<std::string>()->default_value("256"), "Bandwidth limit: integer in kbps or letters: L (32), O (256), P (2048), X (>9000)")
+      ("bandwidth", value<std::string>()->default_value(""), "Bandwidth limit: integer in kbps or letters: L (32), O (256), P (2048), X (>9000)")
 #ifdef _WIN32
       ("svcctl",    value<std::string>()->default_value(""),     "Windows service management ('install' or 'remove')")
       ("insomnia", value<bool>()->zero_tokens()->default_value(false), "Prevent system from sleeping")

Daemon.cpp

@@ -151,12 +151,37 @@ namespace i2p
 
 			/* this section also honors 'floodfill' flag, if set above */
 			std::string bandwidth; i2p::config::GetOption("bandwidth", bandwidth);
-			if (bandwidth[0] > 'K' && bandwidth[0] < 'Z') {
-				i2p::context.SetBandwidth (bandwidth[0]);
-				LogPrint(eLogInfo, "Daemon: bandwidth set to ", i2p::context.GetBandwidthLimit (), "KBps");
-			} else if (bandwidth[0] >= '0' && bandwidth[0] <= '9') {
-				i2p::context.SetBandwidth (std::atoi(bandwidth.c_str()));
-				LogPrint(eLogInfo, "Daemon: bandwidth set to ", i2p::context.GetBandwidthLimit (), " KBps");
+			if (bandwidth.length () > 0)
+			{	
+				if (bandwidth[0] >= 'K' && bandwidth[0] <= 'X') 
+				{
+					i2p::context.SetBandwidth (bandwidth[0]);
+					LogPrint(eLogInfo, "Daemon: bandwidth set to ", i2p::context.GetBandwidthLimit (), "KBps");
+				} 
+				else 
+				{
+					auto value = std::atoi(bandwidth.c_str());
+					if (value > 0) 
+					{	
+						i2p::context.SetBandwidth (value);
+						LogPrint(eLogInfo, "Daemon: bandwidth set to ", i2p::context.GetBandwidthLimit (), " KBps");
+					}
+					else
+					{
+						LogPrint(eLogInfo, "Daemon: unexpected bandwidth ", bandwidth, ". Set to 'low'");
+						i2p::context.SetBandwidth (i2p::data::CAPS_FLAG_LOW_BANDWIDTH2);
+					}	
+				}	
+			}	
+			else if (isFloodfill) 
+			{
+				LogPrint(eLogInfo, "Daemon: floodfill bandwidth set to 'extra'");
+				i2p::context.SetBandwidth (i2p::data::CAPS_FLAG_EXTRA_BANDWIDTH1);
+			} 
+			else
+			{
+				LogPrint(eLogInfo, "Daemon: bandwidth set to 'low'");
+				i2p::context.SetBandwidth (i2p::data::CAPS_FLAG_LOW_BANDWIDTH2);
 			}	
 
 			std::string family; i2p::config::GetOption("family", family);

RouterContext.cpp

@@ -170,26 +170,24 @@ namespace i2p
 		uint16_t limit = 0;
 		enum { low, high, extra } type = high;
 		/* detect parameters */
-		switch (L) {
+		switch (L) 
+		{
 			case i2p::data::CAPS_FLAG_LOW_BANDWIDTH1   : limit =   12; type = low;   break;
 			case i2p::data::CAPS_FLAG_LOW_BANDWIDTH2   : limit =   48; type = low;   break;
 			case i2p::data::CAPS_FLAG_HIGH_BANDWIDTH1  : limit =   64; type = high;  break;
 			case i2p::data::CAPS_FLAG_HIGH_BANDWIDTH2  : limit =  128; type = high;  break;
-			default:
 			case i2p::data::CAPS_FLAG_HIGH_BANDWIDTH3  : limit =  256; type = high;  break;
 			case i2p::data::CAPS_FLAG_EXTRA_BANDWIDTH1 : limit = 2048; type = extra; break;
 			case i2p::data::CAPS_FLAG_EXTRA_BANDWIDTH2 : limit = 9999; type = extra; break;
-		}
-		/* floodfill requires 'extra' bandwidth */
-		if (m_IsFloodfill && limit < 2048) {
-			limit = 2048, type = extra;
-			LogPrint(eLogInfo, "Daemon: bandwidth set to 'extra' due to floodfill");
+			default:
+				 limit =  48; type = low;
 		}
 		/* update caps & flags in RI */
 		auto caps = m_RouterInfo.GetCaps ();
 		caps &= ~i2p::data::RouterInfo::eHighBandwidth;
 		caps &= ~i2p::data::RouterInfo::eExtraBandwidth;
-		switch (type) {
+		switch (type) 
+		{
 			case low   : /* not set */; break;
 			case high  : caps |= i2p::data::RouterInfo::eHighBandwidth;  break;
 			case extra : caps |= i2p::data::RouterInfo::eExtraBandwidth; break;
@@ -199,7 +197,8 @@ namespace i2p
 		m_BandwidthLimit = limit;
 	}
 
-	void RouterContext::SetBandwidth (int limit) {
+	void RouterContext::SetBandwidth (int limit) 
+	{
 		if      (limit > 2000) { SetBandwidth('X'); }
 		else if (limit >  256) { SetBandwidth('P'); }
 		else if (limit >  128) { SetBandwidth('O'); }