Hi guys, I am writing this app which will send a UDP request to a fingerprint device and get the response. The problem that I am facing is that I can not receive a response from the device. Anyway, I tried to do the following:
1- send the data request from the application that comes with the device, and recieve it with my app. It works perfectly fine.
2- send the data from my app, and receive it with another instance of the same app. It works fine.
3- send the request from my app to the device, and here I don't get a response at all. I can't figure out what I am doing wrong. I checked the packets with Wireshark, and it shows there is a reply from the deivce but my application does not seem to receive that.
I noticed in wireshark that my application is sending the packet on port 1001 with the protocol aeroflight-ads, and the device replies with the same protocol. However the original application that comes with the device used hpss-ndap with port 1001. I don't know what these means, and don't know what the error is. Sending and recieveing between two different PCs using my app works fine. but when I communicate with the deivce I can't recieve anything.
Advice please about what should I do. I am new to networking, and I have been checking this for more that two days without a result.
thanks.
1- send the data request from the application that comes with the device, and recieve it with my app. It works perfectly fine.
2- send the data from my app, and receive it with another instance of the same app. It works fine.
3- send the request from my app to the device, and here I don't get a response at all. I can't figure out what I am doing wrong. I checked the packets with Wireshark, and it shows there is a reply from the deivce but my application does not seem to receive that.
I noticed in wireshark that my application is sending the packet on port 1001 with the protocol aeroflight-ads, and the device replies with the same protocol. However the original application that comes with the device used hpss-ndap with port 1001. I don't know what these means, and don't know what the error is. Sending and recieveing between two different PCs using my app works fine. but when I communicate with the deivce I can't recieve anything.
Advice please about what should I do. I am new to networking, and I have been checking this for more that two days without a result.
thanks.