Definition of Network Units: Fragment, Segment, Packet, Frame, …
Datagram: This is used in 2 layers. If the network protocol is IP, the unit of data is called Datagram. At the transport layer, if the protocol is UDP, we use datagram there as well. Hence, we differentiate them as UDP Datagram, IP Datagram. Frame: Physical layer representation. Packet: It is a more generic term used either transport layer or ...
sockets - What's the difference between streams and datagrams in ...
2011年1月14日 · Using a datagram protocol like UDP allows the software to recover from such an event extremely quickly, by simply ignoring the lost data or re-requesting it sooner than TCP would. VoIP is a good candidate for simply ignoring the lost data -- one party would just hear a short gap, similar to what happens when talking to someone on a cell phone ...
java - send and receive Socket Datagram - Stack Overflow
2024年1月2日 · Constructs a datagram socket and binds it to any available port on the local host machine. The socket will be bound to the wildcard address, an IP address chosen by the kernel. However, when the server receives a datagram, you are ignoring the IP and port where the datagram was actually sent from: DatagramSocket.receive(DatagramPacket)
Unix Domain Socket: Using datagram communication between …
2014年8月29日 · There's a trick to using Unix Domain Socket with datagram configuration. Unlike stream sockets (tcp or unix domain socket), datagram sockets need endpoints defined for both the server AND the client. When one establishes a connection in stream sockets, an endpoint for the client is implicitly created by the operating system.
udp - TCP/IP packets and datagrams - Stack Overflow
2016年5月17日 · Datagrams are the IP packets that provide a quick and unreliable service like UDP, and all IP packets are datagrams; [4] however, at the TCP layer, what is termed a TCP segment is the sometimes necessary IP fragmentation of a datagram, [5] but those are referred to as " packets ". [6] [Emphasys added] Wiki source.
What is the largest Safe UDP Packet Size on the Internet
The theoretical limit (on Windows) for the maximum size of a UDP packet is 65507 bytes. This is documented here: The correct maximum UDP message size is 65507, as determined by the following formula: 0xffff - (sizeof (IP Header) + sizeof (UDP Header)) = 65535- (20+8) = 65507. That being said, most protocols limit to a much smaller size ...
Difference between UNIX domain STREAM and DATAGRAM sockets?
2012年12月19日 · 34. The main difference is that one is connection based (STREAM) and the other is connection-less (DGRAM) - the difference between stream and packet oriented communication is usually much less important. With SOCK_STREAM you still get all the connection handling, i.e. listen / accept and you can tell if a connection is closed by the other side.
datagram - Using DatagramPacket in Java - Stack Overflow
2012年12月10日 · To send a String through a DatagramPacket we use: String msg = "example"; byte[]data = msg.getBytes(); DatagramPacket pktOut = new DatagramPacket(data, 0, data.length, dest, port) How to send an
Is it possible to send datagrams over TCP? - Stack Overflow
2010年4月9日 · s = socket(AF_INET, SOCK_DGRAM, 0); To create a TCP socket: int s; s = socket(AF_INET, SOCK_STREAM, 0); There are two common ways to send discrete chunks of data across the wire. You can either use UDP and send a discrete chunk as a datagram, or you can but structs into TCP data, and let them go as a stream.
Difference between PACKETS and FRAMES - Stack Overflow
2019年12月6日 · A datagram is simply a construct of a protocol header, and included bits. A Frame is a datagram at L2. A Packet is a datagram at L3. Packets get carried within a Frame, so the Packet datagram does indeed fit inside a Frame datagram. More details on this answer at Network Engineering Stack Exchange. – Eddie.