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CLI: Sort MTU output by address

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zzz
2022-11-23 09:45:30 -05:00
parent 66567bc618
commit dae60e5387
1 changed files with 21 additions and 3 deletions
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router/java/src/net/i2p/router/transport/udp/MTU.java
+21 -3
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@@ -5,8 +5,11 @@ import java.net.Inet6Address;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.Enumeration;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import net.i2p.I2PAppContext;
import net.i2p.util.Log;
@@ -219,6 +222,8 @@ public class MTU {
try {
Enumeration<NetworkInterface> ifcs = NetworkInterface.getNetworkInterfaces();
if (ifcs != null) {
// address to MTU
Map<InetAddress, Integer> sorted = new TreeMap<InetAddress, Integer>(new IAComparator());
// this is O(n**2) through the interfaces and very slow on windows
while (ifcs.hasMoreElements()) {
NetworkInterface ifc = ifcs.nextElement();
@@ -232,16 +237,29 @@ public class MTU {
} catch (SocketException e) {
continue;
}
for(Enumeration<InetAddress> addrs = ifc.getInetAddresses(); addrs.hasMoreElements();) {
int mtu = ifc.getMTU();
for (Enumeration<InetAddress> addrs = ifc.getInetAddresses(); addrs.hasMoreElements();) {
InetAddress addr = addrs.nextElement();
System.out.println("MTU for " + addr.getHostAddress() + " is " + ifc.getMTU() +
sorted.put(addr, Integer.valueOf(mtu));
}
}
for (Map.Entry<InetAddress, Integer> e : sorted.entrySet()) {
InetAddress addr = e.getKey();
Integer mtu = e.getValue();
System.out.println("MTU for " + addr.getHostAddress() + " is " + mtu +
"; I2P MTU is " + getMTU(addr, false) +
"; SSU2 MTU is " + getMTU(addr, true));
}
}
}
} catch (SocketException se) {
System.out.println("no interfaces");
}
}
/** @since 0.9.57 */
private static class IAComparator implements Comparator<InetAddress> {
public int compare(InetAddress l, InetAddress r) {
return (l.getHostAddress()).compareTo((r.getHostAddress()));
}
}
}