25
26 package sun.net;
27
28 import java.security.AccessController;
29
30 /**
31 * Determines the ephemeral port range in use on this system.
32 * If this cannot be determined, then the default settings
33 * of the OS are returned.
34 */
35
36 public final class PortConfig {
37
38 private static int defaultUpper, defaultLower;
39 private final static int upper, lower;
40
41 private PortConfig() {}
42
43 static {
44 AccessController.doPrivileged(
45 new java.security.PrivilegedAction<Void>() {
46 public Void run() {
47 System.loadLibrary("net");
48 String os = System.getProperty("os.name");
49 if (os.startsWith("Linux")) {
50 defaultLower = 32768;
51 defaultUpper = 61000;
52 } else if (os.startsWith("SunOS")) {
53 defaultLower = 32768;
54 defaultUpper = 65535;
55 } else if (os.contains("OS X")) {
56 defaultLower = 49152;
57 defaultUpper = 65535;
58 } else if (os.startsWith("AIX")) {
59 // The ephemeral port is OS version dependent on AIX:
60 // http://publib.boulder.ibm.com/infocenter/aix/v7r1/topic/com.ibm.aix.rsct315.admin/bl503_ephport.htm
61 // However, on AIX 5.3 / 6.1 / 7.1 we always see the
62 // settings below by using:
63 // /usr/sbin/no -a | fgrep ephemeral
64 defaultLower = 32768;
65 defaultUpper = 65535;
|
25
26 package sun.net;
27
28 import java.security.AccessController;
29
30 /**
31 * Determines the ephemeral port range in use on this system.
32 * If this cannot be determined, then the default settings
33 * of the OS are returned.
34 */
35
36 public final class PortConfig {
37
38 private static int defaultUpper, defaultLower;
39 private final static int upper, lower;
40
41 private PortConfig() {}
42
43 static {
44 AccessController.doPrivileged(
45 new java.security.PrivilegedAction<>() {
46 public Void run() {
47 System.loadLibrary("net");
48 String os = System.getProperty("os.name");
49 if (os.startsWith("Linux")) {
50 defaultLower = 32768;
51 defaultUpper = 61000;
52 } else if (os.startsWith("SunOS")) {
53 defaultLower = 32768;
54 defaultUpper = 65535;
55 } else if (os.contains("OS X")) {
56 defaultLower = 49152;
57 defaultUpper = 65535;
58 } else if (os.startsWith("AIX")) {
59 // The ephemeral port is OS version dependent on AIX:
60 // http://publib.boulder.ibm.com/infocenter/aix/v7r1/topic/com.ibm.aix.rsct315.admin/bl503_ephport.htm
61 // However, on AIX 5.3 / 6.1 / 7.1 we always see the
62 // settings below by using:
63 // /usr/sbin/no -a | fgrep ephemeral
64 defaultLower = 32768;
65 defaultUpper = 65535;
|