Send UDP network messages on the command line with the free Swiss File Knife for Windows, Mac OS X and Linux.
sfk udpsend host port [options] data [data2] [...]
send a UDP message, and optionally receive replies.
-listen wait for a single reply, and dump it.
-listen=n wait for so many replies and dump them.
-listenall receive endless.
-timeout=n wait up to n msec for replies.
-wide, -lean etc. change hex dump output format.
for details, type "sfk hexdump"
-flat print messages as plain text.
input data format:
0x123456 a hex string which is converted to binary
foo any other plain text is sent as is, but
zero termination is NOT done automatically.
all given data fragments are joined into one large block.
how long the block can be is system dependent, but it must
always stay below 2000 bytes.
examplessfk udpsend localhost 12345 -listen hello 0x00
send "hello" followed by a zero byte to localhost
on port 12345, then receive a single reply.