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The port numbers in the range from 0 to 1023 (0 to 2 10 − 1) are the well-known ports or system ports. [3] They are used by system processes that provide widely used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the ...
A server process first creates a named server connection port object, and waits for clients to connect. A client requests a connection to that named port by sending a connect message. If the server accepts the connection, two unnamed ports are created: client communication port - used by client threads to communicate with a particular server
For TCP, port number 0 is reserved and cannot be used, while for UDP, the source port is optional and a value of zero means no port. A process associates its input or output channels via an internet socket, which is a type of file descriptor, associated with a transport protocol, a network address such as an IP address, and a port
Commonly used in concurrency models. Used in LPC, RPC, RMI, and MPI paradigms, Java RMI, CORBA, COM, DDS, MSMQ, MailSlots, QNX, others Memory-mapped file: A file mapped to RAM and can be modified by changing memory addresses directly instead of outputting to a stream. This shares the same benefits as a standard file. All POSIX systems, Windows
The following ports are used for Microsoft Message Queuing operations: TCP: 1801; RPC: 135, 2101*, 2103*, 2105* UDP: 3527, 1801 * These port numbers may be incremented by 11 if the initial choice of RPC port is being used when Message Queuing initializes. Port 135 is queried to discover the 2xxx ports. [3]
An ephemeral port is a communications endpoint of a transport layer protocol of the Internet protocol suite that is used for only a short period of time for the duration of a communication session. Such short-lived ports are allocated automatically within a predefined range of port numbers by the IP stack software of a computer operating system.
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The most widely known use of the Mailslot IPC mechanism is the Windows Messenger service that is part of the Windows NT-line of products, including Windows XP.The Messenger Service, not to be confused with the MSN Messenger internet chat service, is essentially a Mailslot server that waits for a message to arrive.