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.
Public Constructors | |||||||||||
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Creates a socket address where the IP address is the wildcard address
and the port number a specified value.
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Creates a socket address from an IP address and a port number.
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Creates a socket address from a hostname and a port number.
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Public Methods | |||||||||||
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Creates an unresolved socket address from a hostname and a port number.
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Compares this object against the specified object.
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Gets the
InetAddress . | |||||||||||
Gets the
hostname . | |||||||||||
Gets the port number.
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Returns a hashcode for this socket address.
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Checks whether the address has been resolved or not.
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Constructs a string representation of this InetSocketAddress.
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Inherited Methods | |||||||||||
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From class
java.lang.Object
|
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.
port | The port number |
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IllegalArgumentException | if the port parameter is outside the specified range of valid port values. |
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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.
addr | The IP address |
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port | The port number |
IllegalArgumentException | if the port parameter is outside the specified range of valid port values. |
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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 permissiom
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.
hostname | the Host name |
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port | The port number |
IllegalArgumentException | if the port parameter is outside the range of valid port values, or if the hostname parameter is null. |
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SecurityException | if a security manager is present and permission to resolve the host name is denied. |
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.
host | the Host name |
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port | The port number |
InetSocketAddress
representing the unresolved
socket addressIllegalArgumentException | if the port parameter is outside the range of valid port values, or if the hostname parameter is null. |
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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 & the port number
are compared.
obj | the object to compare against. |
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true
if the objects are the same;
false
otherwise.Gets the InetAddress
.
null
if it is unresolved.
Gets the port number.
Returns a hashcode for this socket address.
Checks whether the address has been resolved or not.
true
if the hostname couldn't be resolved into
an InetAddress
.
Constructs a string representation of this InetSocketAddress. This String is constructed by calling toString() on the InetAddress and concatenating the port number (with a colon). If the address is unresolved then the part before the colon will only contain the hostname.