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HAProxy is a free and open source software that provides a high availability load balancer and Proxy (forward proxy, [2] reverse proxy) for TCP and HTTP-based applications that spreads requests across multiple servers. [3] It is written in C [4] and has a reputation for being fast and efficient (in terms of processor and memory usage). [5]
This is followed by a 2-bit type, a poll/final bit, and a 3-bit sequence number. (Or a 4-bit padding field followed by a 7-bit sequence number.) The first (least significant) 2 bits mean it is an S-frame. All S frames include a P/F bit and a receive sequence number as described above.
The general format of the field is: [2] X-Forwarded-For: client, proxy1, proxy2 where the value is a comma+space separated list of IP addresses, the left-most being the original client, and each successive proxy that passed the request adding the IP address where it received the request from.
Server Name Indication (SNI) is an extension to the Transport Layer Security (TLS) computer networking protocol by which a client indicates which hostname it is attempting to connect to at the start of the handshaking process. [1]
The Dynamic Host Configuration Protocol (DHCP) is a network management protocol used on Internet Protocol (IP) networks for automatically assigning IP addresses and other communication parameters to devices connected to the network using a client–server architecture.
The Discovery and Basic Configuration Protocol (DCP) is a protocol definition within the PROFINET context. It is a link layer based protocol to configure station names and IP addresses. It is restricted to the local network segment and mainly used in small and medium applications without an installed DHCP server.
An INI file is a configuration file for computer software that consists of plain text with a structure and syntax comprising key–value pairs organized in sections. [1] The name of these configuration files comes from the filename extension INI, short for initialization, used in the MS-DOS operating system which popularized this method of software configuration.
CANopen devices must have an object dictionary, which is used for configuration and communication with the device. An entry in the object dictionary is defined by: Index , the 16-bit address of the object in the dictionary