Added in API level 1

Summary: Ctors | Methods | Inherited Methods

InetSocketAddress

public class InetSocketAddress
extends SocketAddress

java.lang.Object
↳	java.net.SocketAddress
	↳	java.net.InetSocketAddress

This class implements an IP Socket Address (IP address + port number) It can also be a pair (hostname + port number), in which case an attempt will be made to resolve the hostname. If resolution fails then the address is said to be unresolved but can still be used on some circumstances like connecting through a proxy.

It provides an immutable object used by sockets for binding, connecting, or as returned values.

The wildcard is a special local IP address. It usually means "any" and can only be used for bind operations.

See also:

Socket
ServerSocket

Summary

Public constructors
`InetSocketAddress(int port)` Creates a socket address where the IP address is the wildcard address and the port number a specified value.
`InetSocketAddress(String hostname, int port)` Creates a socket address from a hostname and a port number.
`InetSocketAddress(InetAddress addr, int port)` Creates a socket address from an IP address and a port number.

Public methods
`static InetSocketAddress`	`createUnresolved(String host, int port)` Creates an unresolved socket address from a hostname and a port number.
`final boolean`	`equals(Object obj)` Compares this object against the specified object.
`final InetAddress`	`getAddress()` Gets the `InetAddress`.
`final String`	`getHostName()` Gets the `hostname`.
`final String`	`getHostString()` Returns the hostname, or the String form of the address if it doesn't have a hostname (it was created using a literal).
`final int`	`getPort()` Gets the port number.
`final int`	`hashCode()` Returns a hashcode for this socket address.
`final boolean`	`isUnresolved()` Checks whether the address has been resolved or not.
`String`	`toString()` Constructs a string representation of this InetSocketAddress.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Public constructors

InetSocketAddress

Added in API level 1

public InetSocketAddress (int port)

Creates a socket address where the IP address is the wildcard address and the port number a specified value.

A valid port value is between 0 and 65535. A port number of zero will let the system pick up an ephemeral port in a bind operation.

Parameters
`port`	`int`: The port number

Throws
`IllegalArgumentException`	if the port parameter is outside the specified range of valid port values.

InetSocketAddress

Added in API level 1

public InetSocketAddress (String hostname, 
                int port)

Creates a socket address from a hostname and a port number.

An attempt will be made to resolve the hostname into an InetAddress. If that attempt fails, the address will be flagged as unresolved.

If there is a security manager, its checkConnect method is called with the host name as its argument to check the permission to resolve it. This could result in a SecurityException.

A valid port value is between 0 and 65535. A port number of zero will let the system pick up an ephemeral port in a bind operation.

Parameters
`hostname`	`String`: the Host name
`port`	`int`: The port number

Throws
`IllegalArgumentException`	if the port parameter is outside the range of valid port values, or if the hostname parameter is `null`.
`SecurityException`	if a security manager is present and permission to resolve the host name is denied.

See also:

isUnresolved()

InetSocketAddress

Added in API level 1

public InetSocketAddress (InetAddress addr, 
                int port)

Creates a socket address from an IP address and a port number.

A valid port value is between 0 and 65535. A port number of zero will let the system pick up an ephemeral port in a bind operation.

A null address will assign the wildcard address.

Parameters
`addr`	`InetAddress`: The IP address
`port`	`int`: The port number

Throws
`IllegalArgumentException`	if the port parameter is outside the specified range of valid port values.

Public methods

createUnresolved

Added in API level 1

public static InetSocketAddress createUnresolved (String host, 
                int port)

Creates an unresolved socket address from a hostname and a port number.

No attempt will be made to resolve the hostname into an InetAddress. The address will be flagged as unresolved.

A valid port value is between 0 and 65535. A port number of zero will let the system pick up an ephemeral port in a bind operation.

Parameters
`host`	`String`: the Host name
`port`	`int`: The port number

Returns
`InetSocketAddress`	an `InetSocketAddress` representing the unresolved socket address

Throws
`IllegalArgumentException`	if the port parameter is outside the range of valid port values, or if the hostname parameter is `null`.

See also:

isUnresolved()

equals

Added in API level 1

public final boolean equals (Object obj)

Compares this object against the specified object. The result is true if and only if the argument is not null and it represents the same address as this object.

Two instances of InetSocketAddress represent the same address if both the InetAddresses (or hostnames if it is unresolved) and port numbers are equal. If both addresses are unresolved, then the hostname and the port number are compared. Note: Hostnames are case insensitive. e.g. "FooBar" and "foobar" are considered equal.

Parameters
`obj`	`Object`: the object to compare against.

Returns
`boolean`	`true` if the objects are the same; `false` otherwise.

See also:

InetAddress.equals(java.lang.Object)

getAddress

Added in API level 1

public final InetAddress getAddress ()

Gets the InetAddress.

Returns
`InetAddress`	the InetAddress or `null` if it is unresolved.

getHostName

Added in API level 1

public final String getHostName ()

Gets the hostname. Note: This method may trigger a name service reverse lookup if the address was created with a literal IP address.

Returns
`String`	the hostname part of the address.

getHostString

Added in API level 19

public final String getHostString ()

Returns the hostname, or the String form of the address if it doesn't have a hostname (it was created using a literal). This has the benefit of not attempting a reverse lookup.

Returns
`String`	the hostname, or String representation of the address.

getPort

Added in API level 1

public final int getPort ()

Gets the port number.

Returns
`int`	the port number.

hashCode

Added in API level 1

public final int hashCode ()

Returns a hashcode for this socket address.

Returns
`int`	a hash code value for this socket address.

isUnresolved

Added in API level 1

public final boolean isUnresolved ()

Checks whether the address has been resolved or not.

Returns
`boolean`	`true` if the hostname couldn't be resolved into an `InetAddress`.

toString

Added in API level 1

public String toString ()

Constructs a string representation of this InetSocketAddress. This string is constructed by calling InetAddress.toString() on the InetAddress and concatenating the port number (with a colon).

If the address is an IPv6 address, the IPv6 literal is enclosed in square brackets, for example: "localhost/[0:0:0:0:0:0:0:1]:80". If the address is unresolved, <unresolved> is displayed in place of the address literal, for example "foo/<unresolved>:80".

To retrieve a string representation of the hostname or the address, use getHostString(), rather than parsing the string returned by this toString() method.

Returns
`String`	a string representation of this object.