ServerUdpThis connector creates a UDP server on this host, where one or more client applications may transmit UDP packets (datagrams). For example, this connector can receive Syslog logs. Datagrams can optionally be relayed to other servers.
The User Datagram Protocol (UDP) is for connectionless, non-guaranteed communication of small packets of data (usually under 576 bytes, but theoretically up to 64kb). Because it is connectionless, it is more efficient than TCP, but delivery is not guaranteed. Syslog and SNMP traps usually use UDP. See also RFC 768: http://www.faqs.org/rfcs/rfc768.html
This connector accepts an additional "eol" setting which will append the given characters to the end of every packet received. This is convenient for text packets that do not already contain end-of-line (EOL) character sequences. A typical setting is: "eol=\r\n", where "\r" is a carriage return (ASCII decimal code 13), and "\n" is a new line (ASCII decimal code 10). If this setting is empty or not present, the packet data is passed to listeners unaltered.
This connector accepts the optional "udp.forward" setting to forward received packets to additional servers.