Issues trying to connect RTL_433 to SoapySDR Server

[catatung]

Hi, I've set up a PlutoPlus SDR on my network. I've run the following to confirm subsystems are working: (I've bolded the commands, for some reason the code blocking does not seem to be working correctly on here)

root@oscar:/opt/SoapyPlutoSDR/build# SoapySDRUtil --check=plutosdr ######################################################

Soapy SDR -- the SDR abstraction library

######################################################

Loading modules... done
Checking driver 'plutosdr'... PRESENT

root@oscar:/opt/SoapyPlutoSDR/build# SoapySDRUtil --find=plutosdr,hostname=192.168.1.99
######################################################

Soapy SDR -- the SDR abstraction library

######################################################

ALSA lib confmisc.c:855:(parse_card) cannot find card '0'
ALSA lib conf.c:5205:(_snd_config_evaluate) function snd_func_card_inum returned error: No such file or directory
ALSA lib confmisc.c:422:(snd_func_concat) error evaluating strings
ALSA lib conf.c:5205:(_snd_config_evaluate) function snd_func_concat returned er ror: No such file or directory
ALSA lib confmisc.c:1342:(snd_func_refer) error evaluating name
ALSA lib conf.c:5205:(_snd_config_evaluate) function snd_func_refer returned err or: No such file or directory
ALSA lib conf.c:5728:(snd_config_expand) Evaluate error: No such file or directo ry
ALSA lib control.c:1575:(snd_ctl_open_noupdate) Invalid CTL default
ALSA lib control.c:1575:(snd_ctl_open_noupdate) Invalid CTL pulse
[INFO] [UHD] linux; GNU C++ version 14.2.0; Boost_108300; UHD_4.8.0.0+ds1-2
[ERROR] avahi_service_browser_new() failed: Bad state

RtApiJack::probeDevices: Jack server not found or connection error!

RtApiPulse::probeDevices: pa_context_connect() failed: Connection refused

RtApiPulse::probeDevices: pa_context_connect() failed: Connection refused

usb_claim_interface error -6
ERROR: Unable to create Avahi DNS-SD client :Daemon not running
[WARNING] Unable to scan ip: -26

Found device 0
device = PlutoSDR
driver = plutosdr
hostname = 192.168.1.99
label = PlutoSDR #0 192.168.1.99
uri = local:

Found device 1
driver = rtlsdr
label = Generic RTL2832U OEM ::
manufacturer = Realtek
product = RTL2838UHIDIR
serial =
tuner = unavailable

root@oscar:/opt/SoapyPlutoSDR/build# ps xa | grep Soapy
89 ? Ssl 0:02 /usr/bin/SoapySDRServer --bind
2907 pts/3 S+ 0:00 grep Soapy

root@oscar:/opt/SoapyPlutoSDR/build# netstat -atulpn | grep 55132
tcp6 0 0 :::55132 :::* LISTEN 89/SoapySDRServer

root@oscar:/opt/SoapyPlutoSDR/build# telnet localhost 55132
Trying ::1...
Connected to localhost.
Escape character is '^]'.
^]
telnet> q
Connection closed.

However when I try this command I receive this error:

root@oscar:/opt/SoapyPlutoSDR/build# rtl_433 -d "soapy=0,driver=remote,remote=tcp://127.0.0.1:55132"
rtl_433 version 25.02 (2025-02-19) inputs file rtl_tcp RTL-SDR SoapySDR
[SoapySDR] Unable to scan ip: -26

[sdr_open_soapy] Failed to open sdr device matching 'soapy=0,driver=remote,remote=tcp://127.0.0.1:55132'.

Is there something I'm missing or doing wrong? In case it's not perfectly clear, my objective is to access the PlutoPlus SDR over the network using RTL_433 on a linux machine. From what I've gathered, the steps are to get the PlutoPlus on the network with it's own ip address, set up SoapySDRServer to be able to access the PlutoPlus, and then with the correct command switches, RTL_433 should be able to access the PlutoPlus through the SoapySDRServer. If I'm wrong anywhere here please let me know so I can see where I'm going wrong. Thanks for any help

[catatung]

An update: I was able to get SoapySDRServer running on the Plutoplus itself, as shown below, however still getting an error when I try to reach it from RTL_433 on the network:

root@oscar:~# SoapySDRUtil --probe="driver=remote,remote=tcp://192.168.1.99:55132"
######################################################

Soapy SDR -- the SDR abstraction library

######################################################

Probe device driver=remote,remote=tcp://192.168.1.99:55132
[WARNING] libusb init error (-99)

[WARNING] libusb init error (-99)

Error probing device: RemoteError: SoapySDR::Device::make() no driver specified and no enumeration results
root@oscar:~#

root@oscar:~# rtl_433 -d "soapy=0,driver=remote,remote=tcp://192.168.1.99:55132"
rtl_433 version 25.02 (2025-02-19) inputs file rtl_tcp RTL-SDR SoapySDR
[SoapySDR] libusb init error (-99)

[SoapySDR] libusb init error (-99)

[sdr_open_soapy] Failed to open sdr device matching 'soapy=0,driver=remote,remote=tcp://192.168.1.99:55132'.
.
.
.

The following was run on the PlutoPlus itself:
# SoapySDRServer --bind
######################################################

Soapy Server -- Use any Soapy SDR remotely

######################################################

Server version: 0.6.0-g54caa5b2
Server UUID: 8ceff166-216a-2000-2468-2cce007f0101
Launching the server... tcp://0.0.0.0:55132
Server bound to 0.0.0.0:55132
Launching discovery server...
Connecting to DNS-SD daemon...
[INFO] Avahi version: avahi 0.8
[INFO] Avahi hostname: pluto
[INFO] Avahi domain: local
[INFO] Avahi FQDN: pluto.local
[INFO] avahi_entry_group_add_service(pluto._soapy._tcp)
Press Ctrl+C to stop the server

[zuckschwerdt]

Troubleshoot like this:

• on every reconnect or hickup of the Pluto: sudo systemctl restart soapyremote-server.service (or restart the bind on the Pluto)
• check sudo systemctl status soapyremote-server.service
• check SoapySDRUtil --find=driver=remote and note the remote address (e.g. 192.168.6.7:55132)
• check SoapySDRUtil --make=driver=remote and
• check SoapySDRUtil --make=driver=remote,remote=192.168.6.7:55132
• now remotely run rtl_433 -vv -d "driver=remote,remote=192.168.6.7:55132"

Running SoapyRemote on the Pluto itself is preferred. You can also run rtl_433 on the Pluto, see https://github.com/triq-org/PlutoSDR-Apps