ssdp | Simple Service Discovery Protocol implemented for Node.js
kandi X-RAY | ssdp Summary
kandi X-RAY | ssdp Summary
During UPnP device discovery, clients can request a description of the various capabilities your service offers. To do this you can either store an xml document and set the location field of your advert to point at that document or have it automatically generated.
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ssdp Examples and Code Snippets
Community Discussions
Trending Discussions on ssdp
QUESTION
I am implementing an SSDP device discovery app using react-native and react-native-ssdp library. Basically what I am doing is;
Multicasting to network for ssdp devices and listing them on my screen. In order to do the listing;
I have a function that registers on ssdp responses. Each time a response from a device received we are updating the state like setDeviceList([...deviceList, newDevice]); But since the devices respond so quick (less than a half of a second), race condition happens and then the update missing real list. In this case I can only see the last device responding in the list.
How can I fix this ?
...ANSWER
Answered 2021-Oct-21 at 09:32I assume you have used useState for the deviceList.
The set-Method of an useState can take a direct parameter or a function where the input parameter is the current value of the state. So you can try something like this:
QUESTION
I am trying to lunch my flutter application on my mobile but When I run
...ANSWER
Answered 2021-Jun-05 at 13:35you flutter channel is unknown .
the version is unknown and seems to be on web developer mode so
if you are using it for android devices , it is better to switch to
QUESTION
Is there a way to query a ssdp server using java? I want to send this request using java and then receive the response back from the server and display it. I googled alot but can't find anything on this.
...ANSWER
Answered 2021-May-31 at 19:12I could not find any solution so I developed my own (javadoc). Maven repository and coordinates:
QUESTION
Trying to install and utilize the https://developer.sonos.com/tools/developer-tools/sonos-simulator/
When following the install instructions and trying to install the node package via the npm install command within the directory it fails with a 404 error trying to find node-ssdp as seen from the snippet below:
...ANSWER
Answered 2021-Apr-24 at 21:43I was having a play around with this today, and managed to get it working.
I installed an old (4.x) version of node as this is what the documentation said it worked with (I honestly didn't try anything newer as I couldn't get the simulator to do what I wanted so uninstalled it after).
The main issue was with node-ssdp, as the included package file with the simulator was trying to get it from a repo that no longer exists. After some trial and error, I found that if you edit the package file to specify node-ssdp 2.7.0 (which is the version that was released when the simulator was), the npm install should go through ok. (If you install a newer version the simulator crashes a few seconds after you run it).
Hopefully this helps!
QUESTION
I have noted unauthorized access to my router (default gateway) from my PC (Catalina iMac).
I am investigating this because we have several Mac PCs that are having the same behavior.
I would like to identify the virus or process that is causing this unauthorized access and remove it.
We scanned our PC with Virus Buster and Avast Antivirus, but it did not detect any viruses...
To investigate, I took tcpdump log of my PC.
And I confirmed packets accessing the router.
For several minutes after starting up the PC, the following suspicious behavior is observed.
- Lots of DNS queries I don't recognize. I don't remember accessing them.
ANSWER
Answered 2021-Jan-29 at 14:36After a lot of research, I found out that it was caused by the Wi-Fi Inspector feature of Avast Antivirus!
The pattern of tcpdump log when the Wi-Fi Inspector button is clicked is almost same.
QUESTION
I know this might be the 10.000th question on receiving UDP multicast messages. However, I already got it working half a year ago. The following snippet I got from http://www.cs.tau.ac.il/~eddiea/samples/Multicast/multicast-listen.c.html (with minor changes: The bind-ip was changed to IPADDR_ANY) worked as expected before I upgraded to macOS Big Sur.
ANSWER
Answered 2021-Jan-02 at 09:58So the comment of @CraigEstey brought me to the conclusion it has to do something with the Firewall. Indeed it was a simple firewall issue. In Settings -> Security -> Firewall -> Firewall Options... you have to disable Block all incoming connections and disable stealth mode. Now I'm receiving all SSDP packages as intended.
QUESTION
I have a text file from which I need to extract certain data. The data I need will appear under a header that begins with "No.". So I know what to look for when searching the file and I can split and print each header. However, I want to extract the data that is on the next line of the one that begins with "No." I cannot use regex either. How can I accomplish this? I was able to successfully locate each header in the file using the below code but as mentioned I want to get the next line.
...ANSWER
Answered 2020-Dec-08 at 22:52If you try to change your code as little as possible, then here's how you can do it:
QUESTION
I am trying to create a new variable based on conditions and to take the value of other variables when the condition is met. Basically, my data.frame looks like this:
...ANSWER
Answered 2020-Sep-22 at 09:47We can write a small function which returns the year where treat values is 1 for the first time.
QUESTION
I've been trying to listen to multicast UDP messages from my Yeelight smart bulb. At a regular interval, the bulb broadcasts its presence on IP 239.255.255.250 port 1982. Also, when sending a specific request (found on page 5 - section 3.1) on the same IP and port, the bulb will respond.
Using sockets, I am trying to establish the communication. On two machines (macOS and Linux), the Python program shown below run at the REPL works, but the Rust code and C++ code also shown below (essentially doing the same thing) doesn't. The Rust program seems to successfully receive 0 bytes twice and then hangs waiting. In the C++ program, the recv function just hangs right away, never returning.
What could be the problem? Why can only Python successfully communicate?
...ANSWER
Answered 2020-Jul-16 at 09:09The Python program works as expected due to Python nicely implementing conversions behind the scenes.
The C(++) program didn't work because the endianness of the port was wrong. I forgot that I have to use addr.sin_port = htons(yeelight_port);.
As for the Rust program, I forgot that with_capacity only allocated the internal buffer, but the Vec is still empty. The solution, described here, is to call buffer.resize(buffer.capacity(), 0);.
QUESTION
I have a huge csv file which contains
...ANSWER
Answered 2020-Jun-25 at 04:24- If
dfd = (datadis[(datadis.src_port == 53725)])results in an empty dataframe, the error happens. - Add
dfd.emptyand ifTrueskip the remainder. - Also, you must
.reset_index()when creatingdfd1, otherwise there may be no.loc[0,'timestamp']
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