inheritedChannel
Returns the channel inherited from the entity that created this Java virtual machine. On many operating systems a process, such as a Java virtual machine, can be started in a manner that allows the process to inherit a channel from the entity that created the process. The manner in which this is done is system dependent, as are the possible entities to which the channel may be connected. For example, on UNIX systems, the Internet services daemon (inetd) is used to start programs to service requests when a request arrives on an associated network port. In this example, the process that is started, inherits a channel representing a network socket.
In cases where the inherited channel represents a networkis for an Internet protocol socket then the Channel type returned by this method is determined as follows:
-
If the inherited channel representsis for a stream-oriented connected socket then a SocketChannel is returned. The socket channel is, at least initially, in blocking mode, bound to a socket address, and connected to a peer.
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If the inherited channel representsis for a stream-oriented listening socket then a ServerSocketChannel is returned. The server-socket channel is, at least initially, in blocking mode, and bound to a socket address.
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If the inherited channel is a datagram-oriented socket then a DatagramChannel is returned. The datagram channel is, at least initially, in blocking mode, and bound to a socket address.
In cases where the inherited channel is for a Unix domain socket then the Channel type returned is the same as for Internet protocol sockets as described above, except that datagram-oriented sockets are not supported.
In addition to the network-oriented channelstwo types of socket just described, this method may return other kinds of channelstypes in the future.
The first invocation of this method creates the channel that is returned. Subsequent invocations of this method return the same channel.
- Returns:
- The inherited channel, if any, otherwise
null .
- Throws:
-
IOException - If an I/O error occurs
-
SecurityException - If a security manager has been installed and it denies RuntimePermission ("inheritedChannel")
- Since:
- 1.5
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inheritedChannel
Returns the channel inherited from the entity that created this Java virtual machine. On many operating systems a process, such as a Java virtual machine, can be started in a manner that allows the process to inherit a channel from the entity that created the process. The manner in which this is done is system dependent, as are the possible entities to which the channel may be connected. For example, on UNIX systems, the Internet services daemon (inetd) is used to start programs to service requests when a request arrives on an associated network port. In this example, the process that is started, inherits a channel representing a network socket.
In cases where the inherited channel represents a network socket then the Channel type returned by this method is determined as follows:
-
If the inherited channel represents a stream-oriented connected socket then a SocketChannel is returned. The socket channel is, at least initially, in blocking mode, bound to a socket address, and connected to a peer.
-
If the inherited channel represents a stream-oriented listening socket then a ServerSocketChannel is returned. The server-socket channel is, at least initially, in blocking mode, and bound to a socket address.
-
If the inherited channel is a datagram-oriented socket then a DatagramChannel is returned. The datagram channel is, at least initially, in blocking mode, and bound to a socket address.
In addition to the network-oriented channels described, this method may return other kinds of channels in the future.
The first invocation of this method creates the channel that is returned. Subsequent invocations of this method return the same channel.
- Returns:
- The inherited channel, if any, otherwise
null .
- Throws:
-
IOException - If an I/O error occurs
-
SecurityException - If a security manager has been installed and it denies RuntimePermission ("inheritedChannel")
- Since:
- 1.5
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inheritedChannel
Returns the channel inherited from the entity that created this Java virtual machine. On many operating systems a process, such as a Java virtual machine, can be started in a manner that allows the process to inherit a channel from the entity that created the process. The manner in which this is done is system dependent, as are the possible entities to which the channel may be connected. For example, on UNIX systems, the Internet services daemon (inetd) is used to start programs to service requests when a request arrives on an associated network port. In this example, the process that is started, inherits a channel representing a network socket.
In cases where the inherited channel is for an Internet protocol socket then the Channel type returned by this method is determined as follows:
-
If the inherited channel is for a stream-oriented connected socket then a SocketChannel is returned. The socket channel is, at least initially, in blocking mode, bound to a socket address, and connected to a peer.
-
If the inherited channel is for a stream-oriented listening socket then a ServerSocketChannel is returned. The server-socket channel is, at least initially, in blocking mode, and bound to a socket address.
-
If the inherited channel is a datagram-oriented socket then a DatagramChannel is returned. The datagram channel is, at least initially, in blocking mode, and bound to a socket address.
In cases where the inherited channel is for a Unix domain socket then the Channel type returned is the same as for Internet protocol sockets as described above, except that datagram-oriented sockets are not supported.
In addition to the two types of socket just described, this method may return other types in the future.
The first invocation of this method creates the channel that is returned. Subsequent invocations of this method return the same channel.
- Returns:
- The inherited channel, if any, otherwise
null .
- Throws:
-
IOException - If an I/O error occurs
-
SecurityException - If a security manager has been installed and it denies RuntimePermission ("inheritedChannel")
- Since:
- 1.5
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