xoff การใช้

• The other end receives the XOFF code, and suspends transmission.
• The album was released on February 28, 2006 through XOFF Records.
• Terminal emulator software generally implements XOFF / XON support as a basic function.
• The ASCII standard does not reserve any control characters for use as XON / XOFF specifically.
• The keyboard equivalents of for XOFF, and for XON, also derive from this usage.
• The printer reacts to this by sending XOFF to the computer, which temporarily stops sending data.
• The Teletype Model 33 ASR adopted two of these, DC3 and DC1, for use as XOFF and XON, respectively.
• Any data containing the XOFF / XON codes thus must be encoded in some manner for proper transmission, with corresponding overhead.
• When the receiver's buffers approach capacity, the receiver sends the XOFF character to tell the sender to stop sending data.
• Sending XOFF requires at least one character time to transmit, and may be queued behind already-transmitted data still in buffers.
• Another method of flow control ( software flow control ) uses special characters such as XON / XOFF to control the flow of data.
• In practice, if an XON is missed then the system deadlocks forever, and if an XOFF is missed then you get an overflow.
• XON / XOFF handshaking presents difficulties as XON and XOFF characters might appear in the data being sent and receivers may interpret them as flow control.
• XON / XOFF handshaking presents difficulties as XON and XOFF characters might appear in the data being sent and receivers may interpret them as flow control.
• On the other hand, since no extra signal circuits are required, XON / XOFF flow control can be done on a 3 wire interface.
• XON / XOFF flow control is an example of in-band signaling, in which control information is sent over the same channel used for the data.
• When one end of a data link is unable to accept any more data ( or approaching that point ), it sends XOFF to the other end.
• Finally, since the XOFF / XON codes are sent in-band, they cannot appear in the data being transmitted without being mistaken for flow control commands.
• For printing devices that directly interpret ASCII codes, this is not a large problem, because the XON and XOFF codes use ASCII " device control " code numbers.
• The server responds with extended header flow control packets that use XON / XOFF, rate, or credit based protocols to control how quickly and how much work the client sends to the server.