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Can UDP send to multiple clients?
You simply send out datagram packets to each client in turn. The packets will have the same origination port and IP, but each client will have a different IP address and/or port number.
Can multiple clients send data to the same UDP socket used by a server?
It is often required for the server applications to be able to accept several UDP connections from clients on the same port. Because UDP socket is a connectionless service, it is able to accept several concurrent connections from different remote hosts. …
Can UDP packets be split?
No, but that’s not your problem. The UDP protocol handles datagram reassembly. If a datagram gets split over two packets, the IP protocol will reassemble it for the UDP protocol, so you will see the complete data.
Does UDP send packets in order?
UDP does not guarantee that your packets will arrive in order. (It does not even guarantee that your packets will arrive at all.) If you need that level of robustness you are better off with TCP.
Does UDP reassemble?
“The IP layer at the destination performs the reassembly. The goal is to make fragmentation and reassembly transparent to the transport layer (TCP and UDP), which it is, except for possible performance degradation.” As you may now 16 bit UDP length field indicates that you can send a total of 65535 bytes.
Does UDP have MTU?
UDP is the most common standard for VoIP but is limited in capability. The maximum MTU (Maximum Transmission Unit) size of UDP we can receive un-fragmented is 1460 bytes. Most broadband routers are set to an MTU default of 1454 bytes, so its uncommon you can transmit more than our limits.
Is UDP a handshake?
UDP does not require the source and destination to establish a three-way handshake before transmission takes place. Additionally, there is no need for an end-to-end connection. UDP is commonly used for Remote Procedure Call (RPC) applications, although RPC can also run on top of TCP.
What happens if 2 programs use the same port?
For TCP, no. You can only have one application listening on the same port at one time. Now if you had 2 network cards, you could have one application listen on the first IP and the second one on the second IP using the same port number. For UDP (Multicasts), multiple applications can subscribe to the same port.