bridge between UDP and serial doesn't work
Clash Royale CLAN TAG#URR8PPP
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I've created a bridge between UDP and serial port using socat. Here is what I have
socat -xv udp4:localhost:54321 open:/dev/ttyUSB1,rawer,lockfile=/tmp/s1.locak,echo=1,b115200,crnl
To monitor data I run
tcpdump -i any -vnn port 54321
To send data I run
echo -n "hello world" | nc -4u -w1 localhost 54321
I do see data going into UDP but I don't see anything coming out of serial. Shouldn't socat options -x and -v display the data? If I understand it correctly, socat doesn't display any data because there is not data flowing from UDP to serial.
Just to make sure that I'm not missing anything, I actually connected an oscilloscope to the serial lines to monitor the data physically. But I didn't see anything.
Has anyone had any experience bridging UDP and serial? I would really appreciate any help with this. Maybe there is another way of doing what I'm doing? Any help is appreciated.
EDIT
Here is what I want to do
Device | Serial | PC
|------------------|
Map Network to| | Map network to Serialport
Serial Port| | SerialPort
| |
SerialPort| |
serial-port udp socat
asked Jul 11 at 19:11
flashburn
16919
add a comment |Â
up vote
1
down vote
favorite
I've created a bridge between UDP and serial port using socat. Here is what I have
socat -xv udp4:localhost:54321 open:/dev/ttyUSB1,rawer,lockfile=/tmp/s1.locak,echo=1,b115200,crnl
To monitor data I run
tcpdump -i any -vnn port 54321
To send data I run
echo -n "hello world" | nc -4u -w1 localhost 54321
I do see data going into UDP but I don't see anything coming out of serial. Shouldn't socat options -x and -v display the data? If I understand it correctly, socat doesn't display any data because there is not data flowing from UDP to serial.
Just to make sure that I'm not missing anything, I actually connected an oscilloscope to the serial lines to monitor the data physically. But I didn't see anything.
Has anyone had any experience bridging UDP and serial? I would really appreciate any help with this. Maybe there is another way of doing what I'm doing? Any help is appreciated.
EDIT
Here is what I want to do
Device | Serial | PC
|------------------|
Map Network to| | Map network to Serialport
Serial Port| | SerialPort
| |
SerialPort| |
serial-port udp socat
asked Jul 11 at 19:11
flashburn
16919
Related - this shows a TCP to serial connector - stackoverflow.com/questions/22624653/…. I'd start with this and confirm that it works, and then mix in the UDP.
– slm♦
Jul 11 at 20:43
Another related - stackoverflow.com/questions/29207980/….
– slm♦
Jul 11 at 20:46
2
It looks likeudp4:is for sending out data over UDP. Since you wantsocatto listen for incoming UDP packets, perhaps replaceudp4:withudp4-listen:.
– telcoM
Jul 11 at 20:47
1
@slm I have a different structure. Will edit the post to show what I mean
– flashburn
Jul 11 at 20:53
add a comment |Â
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I've created a bridge between UDP and serial port using socat. Here is what I have
socat -xv udp4:localhost:54321 open:/dev/ttyUSB1,rawer,lockfile=/tmp/s1.locak,echo=1,b115200,crnl
To monitor data I run
tcpdump -i any -vnn port 54321
To send data I run
echo -n "hello world" | nc -4u -w1 localhost 54321
I do see data going into UDP but I don't see anything coming out of serial. Shouldn't socat options -x and -v display the data? If I understand it correctly, socat doesn't display any data because there is not data flowing from UDP to serial.
Just to make sure that I'm not missing anything, I actually connected an oscilloscope to the serial lines to monitor the data physically. But I didn't see anything.
Has anyone had any experience bridging UDP and serial? I would really appreciate any help with this. Maybe there is another way of doing what I'm doing? Any help is appreciated.
EDIT
Here is what I want to do
Device | Serial | PC
|------------------|
Map Network to| | Map network to Serialport
Serial Port| | SerialPort
| |
SerialPort| |
serial-port udp socat
asked Jul 11 at 19:11
flashburn
16919
I've created a bridge between UDP and serial port using socat. Here is what I have
socat -xv udp4:localhost:54321 open:/dev/ttyUSB1,rawer,lockfile=/tmp/s1.locak,echo=1,b115200,crnl
To monitor data I run
tcpdump -i any -vnn port 54321
To send data I run
echo -n "hello world" | nc -4u -w1 localhost 54321
I do see data going into UDP but I don't see anything coming out of serial. Shouldn't socat options -x and -v display the data? If I understand it correctly, socat doesn't display any data because there is not data flowing from UDP to serial.
Just to make sure that I'm not missing anything, I actually connected an oscilloscope to the serial lines to monitor the data physically. But I didn't see anything.
Has anyone had any experience bridging UDP and serial? I would really appreciate any help with this. Maybe there is another way of doing what I'm doing? Any help is appreciated.
EDIT
Here is what I want to do
Device | Serial | PC
|------------------|
Map Network to| | Map network to Serialport
Serial Port| | SerialPort
| |
SerialPort| |
serial-port udp socat
asked Jul 11 at 19:11
flashburn
16919
edited Jul 11 at 20:56
asked Jul 11 at 19:11
flashburn
16919
asked Jul 11 at 19:11
flashburn
16919
asked Jul 11 at 19:11
flashburn
16919
16919
Related - this shows a TCP to serial connector - stackoverflow.com/questions/22624653/…. I'd start with this and confirm that it works, and then mix in the UDP.
– slm♦
Jul 11 at 20:43
Another related - stackoverflow.com/questions/29207980/….
– slm♦
Jul 11 at 20:46
2
It looks likeudp4:is for sending out data over UDP. Since you wantsocatto listen for incoming UDP packets, perhaps replaceudp4:withudp4-listen:.
– telcoM
Jul 11 at 20:47
1
@slm I have a different structure. Will edit the post to show what I mean
– flashburn
Jul 11 at 20:53
add a comment |Â
Related - this shows a TCP to serial connector - stackoverflow.com/questions/22624653/…. I'd start with this and confirm that it works, and then mix in the UDP.
– slm♦
Jul 11 at 20:43
Another related - stackoverflow.com/questions/29207980/….
– slm♦
Jul 11 at 20:46
2
It looks likeudp4:is for sending out data over UDP. Since you wantsocatto listen for incoming UDP packets, perhaps replaceudp4:withudp4-listen:.
– telcoM
Jul 11 at 20:47
1
@slm I have a different structure. Will edit the post to show what I mean
– flashburn
Jul 11 at 20:53
Related - this shows a TCP to serial connector - stackoverflow.com/questions/22624653/…. I'd start with this and confirm that it works, and then mix in the UDP.
– slm♦
Jul 11 at 20:43
Related - this shows a TCP to serial connector - stackoverflow.com/questions/22624653/…. I'd start with this and confirm that it works, and then mix in the UDP.
– slm♦
Jul 11 at 20:43
Another related - stackoverflow.com/questions/29207980/….
– slm♦
Jul 11 at 20:46
Another related - stackoverflow.com/questions/29207980/….
– slm♦
Jul 11 at 20:46
2
2
It looks like
udp4: is for sending out data over UDP. Since you want socatto listen for incoming UDP packets, perhaps replace udp4: with udp4-listen:.– telcoM
Jul 11 at 20:47
It looks like
udp4: is for sending out data over UDP. Since you want socatto listen for incoming UDP packets, perhaps replace udp4: with udp4-listen:.– telcoM
Jul 11 at 20:47
1
1
@slm I have a different structure. Will edit the post to show what I mean
– flashburn
Jul 11 at 20:53
@slm I have a different structure. Will edit the post to show what I mean
– flashburn
Jul 11 at 20:53
add a comment |Â
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Related - this shows a TCP to serial connector - stackoverflow.com/questions/22624653/…. I'd start with this and confirm that it works, and then mix in the UDP.
– slm♦
Jul 11 at 20:43
Another related - stackoverflow.com/questions/29207980/….
– slm♦
Jul 11 at 20:46
2
It looks like
udp4:is for sending out data over UDP. Since you wantsocatto listen for incoming UDP packets, perhaps replaceudp4:withudp4-listen:.– telcoM
Jul 11 at 20:47
1
@slm I have a different structure. Will edit the post to show what I mean
– flashburn
Jul 11 at 20:53