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Added in API level 1

Summary: Protected Ctors | Methods | Inherited Methods | [Expand All]

SocketFactory

public abstract class SocketFactory
extends Object

java.lang.Object
↳	javax.net.SocketFactory

Known Direct Subclasses

SSLSocketFactory

Known Indirect Subclasses

SSLCertificateSocketFactory

这个类创建套接字。它可能被其他工厂子类化，这些工厂创建套接字的特定子类，从而为添加公共套接字级功能提供了一个通用框架。

套接字工厂是捕获与正在构建的套接字有关的各种策略的简单方法，以不需要特殊配置要求套接字的代码的方式生成这样的套接字：

Due to polymorphism of both factories and sockets, different kinds of sockets can be used by the same application code just by passing it different kinds of factories.
Factories can themselves be customized with parameters used in socket construction. So for example, factories could be customized to return sockets with different networking timeouts or security parameters already configured.
The sockets returned to the application can be subclasses of java.net.Socket, so that they can directly expose new APIs for features such as compression, security, record marking, statistics collection, or firewall tunneling.

工厂类由环境特定的配置机制指定。例如， getDefault方法可以返回一个适合特定用户或applet的工厂，并且框架可以使用根据自己的用途进行定制的工厂。

也可以看看：

ServerSocketFactory

Summary

Protected constructors
`SocketFactory()` 创建一个 `SocketFactory` 。

Public methods
`abstract Socket`	`createSocket(String host, int port)` 创建套接字并将其连接到指定远程端口上的指定远程主机。
`abstract Socket`	`createSocket(InetAddress host, int port)` 创建一个套接字并将其连接到指定地址的指定端口号。
`abstract Socket`	`createSocket(InetAddress address, int port, InetAddress localAddress, int localPort)` 创建套接字并将其连接到指定远程端口上的指定远程地址。
`abstract Socket`	`createSocket(String host, int port, InetAddress localHost, int localPort)` 创建套接字并将其连接到指定远程端口上的指定远程主机。
`Socket`	`createSocket()` 创建一个未连接的套接字。
`static SocketFactory`	`getDefault()` 返回环境默认套接字工厂的副本。

Inherited methods

From class java.lang.Object

Protected constructors

SocketFactory

Added in API level 1

SocketFactory ()

创建一个 SocketFactory 。

Public methods

createSocket

Added in API level 1

Socket createSocket (String host, 
                int port)

创建套接字并将其连接到指定远程端口上的指定远程主机。该套接字使用为该工厂建立的套接字选项进行配置。

如果有安全管理器，则使用主机地址和port作为参数调用其checkConnect方法。这可能会导致SecurityException。

Parameters
`host`	`String`: the server host name with which to connect, or `null` for the loopback address.
`port`	`int`: the server port

Returns
`Socket`	the `Socket`

Throws
`IOException`	if an I/O error occurs when creating the socket
`SecurityException`	if a security manager exists and its `checkConnect` method doesn't allow the operation.
`UnknownHostException`	if the host is not known
`IllegalArgumentException`	if the port parameter is outside the specified range of valid port values, which is between 0 and 65535, inclusive.

也可以看看：

createSocket

Added in API level 1

Socket createSocket (InetAddress host, 
                int port)

创建一个套接字并将其连接到指定地址的指定端口号。该套接字使用为该工厂建立的套接字选项进行配置。

如果有安全管理器， checkConnect主机地址和port作为参数调用其checkConnect方法。这可能会导致SecurityException。

Parameters
`host`	`InetAddress`: the server host
`port`	`int`: the server port

Returns
`Socket`	the `Socket`

Throws
`IOException`	if an I/O error occurs when creating the socket
`SecurityException`	if a security manager exists and its `checkConnect` method doesn't allow the operation.
`IllegalArgumentException`	if the port parameter is outside the specified range of valid port values, which is between 0 and 65535, inclusive.
`NullPointerException`	if `host` is null.

也可以看看：

createSocket

Added in API level 1

Socket createSocket (InetAddress address, 
                int port, 
                InetAddress localAddress, 
                int localPort)

创建套接字并将其连接到指定远程端口上的指定远程地址。套接字也将被绑定到本地地址和端口。套接字使用为此工厂建立的套接字选项进行配置。

如果有安全管理器， checkConnect主机地址和port作为参数调用其checkConnect方法。这可能会导致SecurityException。

Parameters
`address`	`InetAddress`: the server network address
`port`	`int`: the server port
`localAddress`	`InetAddress`: the client network address
`localPort`	`int`: the client port

Returns
`Socket`	the `Socket`

Throws
`IOException`	if an I/O error occurs when creating the socket
`SecurityException`	if a security manager exists and its `checkConnect` method doesn't allow the operation.
`IllegalArgumentException`	if the port parameter or localPort parameter is outside the specified range of valid port values, which is between 0 and 65535, inclusive.
`NullPointerException`	if `address` is null.

也可以看看：

createSocket

Added in API level 1

Socket createSocket (String host, 
                int port, 
                InetAddress localHost, 
                int localPort)

创建套接字并将其连接到指定远程端口上的指定远程主机。套接字也将被绑定到本地地址和提供的端口。该套接字使用为该工厂建立的套接字选项进行配置。

如果有安全管理器， checkConnect主机地址和port作为参数调用其checkConnect方法。这可能会导致SecurityException。

Parameters
`host`	`String`: the server host name with which to connect, or `null` for the loopback address.
`port`	`int`: the server port
`localHost`	`InetAddress`: the local address the socket is bound to
`localPort`	`int`: the local port the socket is bound to

Returns
`Socket`	the `Socket`

Throws
`IOException`	if an I/O error occurs when creating the socket
`SecurityException`	if a security manager exists and its `checkConnect` method doesn't allow the operation.
`UnknownHostException`	if the host is not known
`IllegalArgumentException`	if the port parameter or localPort parameter is outside the specified range of valid port values, which is between 0 and 65535, inclusive.

也可以看看：

createSocket

Added in API level 1

Socket createSocket ()

创建一个未连接的套接字。

Returns
`Socket`	the unconnected socket

Throws
`IOException`	if the socket cannot be created

也可以看看：

getDefault

Added in API level 1

SocketFactory getDefault ()

返回环境默认套接字工厂的副本。

Returns
`SocketFactory`	the default `SocketFactory`