RRQ

E229034

RRQ is the Read Request message type used in the Trivial File Transfer Protocol (TFTP) to initiate the transfer of a file from a server to a client.

All labels observed (1)

Label Occurrences
RRQ canonical 2

How this entity was disambiguated

Statements (46)

Predicate Object
instanceOf Read Request ⓘ
TFTP message type ⓘ
abbreviationFor Read Request ⓘ
acknowledgedBy DATA packet with block number 1 ⓘ
binaryFormat 2-byte opcode followed by filename, 0 byte, mode, 0 byte, and options ⓘ
containsField filename ⓘ
mode ⓘ
optional TFTP options ⓘ
contrastWith WRQ ⓘ
dataFlow data flows from server to client after RRQ ⓘ
defaultServerPort 69 ⓘ
definedIn RFC 1350 ⓘ
direction client-to-server ⓘ
errorHandling errors reported via TFTP ERROR messages ⓘ
filenameEncoding ASCII ⓘ
firstStepIn TFTP read transfer sequence ⓘ
initiatesExchangeWith DATA messages ⓘ
layer application layer ⓘ
modeCaseSensitivity mode is case-insensitive in TFTP specification ⓘ
modeExamples mail ⓘ
netascii ⓘ
octet ⓘ
networkPortUsage may cause server to use a new ephemeral UDP port for data transfer ⓘ
opcodeValue 1 ⓘ
operatesOver connectionless transport ⓘ
optionNegotiation can include TFTP option extensions such as blksize ⓘ
can include TFTP option extensions such as timeout ⓘ
can include TFTP option extensions such as tsize ⓘ
packetType control packet ⓘ
purpose initiate file transfer from server to client ⓘ
receivedBy TFTP server ⓘ
reliabilityMechanism relies on retransmission and timeouts at TFTP level ⓘ
requires server to have read access to requested file ⓘ
responseIfAccessViolation ERROR packet from server ⓘ
responseIfFileNotFound ERROR packet from server ⓘ
retransmissionCondition no response within timeout ⓘ
roleInTFTP request file read operation ⓘ
securityCharacteristic no built-in authentication ⓘ
sentBy TFTP client ⓘ
standardStatus part of TFTP standard ⓘ
transportProtocol UDP ⓘ
typicalUseCase firmware or configuration download ⓘ
network device bootstrapping ⓘ
usedFor downloading files from TFTP server ⓘ
usedInProtocol Trivial File Transfer Protocol ⓘ
linked to: TFTP
WRQMeaning Write Request ⓘ

How these facts were elicited

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.