how to access lightning json-rpc remotely

[Pecheur]

Hello,

I'm able to connect to bitcoind remotely from my laptop using following CURL command:

curl --user user:password --data-binary '{"jsonrpc":"2.0","id":"curltest","method":"getblockchaininfo","params":[]}'  -H 'content-type:text/plain;' http://1.2.3.4:18332 -v

but I'm not able to call the lightingd remotely from my laptop using following CURL command:

curl --user user:password --data-binary '{"jsonrpc":"2.0","id":"curltest","method":"listpeers","params":[]}'  -H 'content-type:text/plain;' http://1.2.3.4:9735 -v

Trying 1.2.3.4:9735...
* connect to 1.2.3.4 port 9735 failed: Connection refused
* Failed to connect to 1.2.3.4 port 9735 after 517 ms: Connection refused
* Closing connection 0
curl: (7) Failed to connect to 1.2.3.4 port 9735 after 517 ms: Connection refused

Lightningd is running and I opened 9735 on the firewall.  I can successfully run "lightning-cli -testnet listpeers" on the node locally.

When running "netstat -anpe | grep "9735" | grep "lightning"" I see there's already an established session on 9735.  

tcp         0      0 1.2.3.4:34918        5.6.7.8:9735       ESTABLISHED 1000       41663      1508/lightning_conn
tcp6       0      0 :::19735                :::*                    LISTEN      1000       40773      1508/lightning_conn

Should I use another port for json-rpc access and leave 9735 for node/peer communication?

I already added 0.0.0.0/0 as rpcallow for testing in the bitcoin.conf file.

Anyone know how I should access lightning json-rpc remotely?

thanks,
Pecheur


Also, I know there's "lightning-cli connect" to connect remotely using the CLI.
But I would like to use JSON-RPC calls instead.  First using CURL then using a nodejs request.

[jackg]

Have you tried using a port different from 9735 already? Is there a change there's another port open (netstat let's you see a lot of info based on searching for the specific job or the name that would be given to any other port that's open).

[Pecheur]

I found the answer on
https://github.com/ElementsProject/lightning/blob/master/doc/lightningd-config.5.md

If 'PORT' is not specified, the default port 9735 is used for mainnet (testnet: 19735, signet: 39735, regtest: 19846). If we can determine a public IP address from the resulting binding, the address is announced.

For testnet I must use 19735 instead of 9735.





bumping into another error

Authorization: Basic cnBjdXNlcjpxxxzEE
> User-Agent: curl/7.79.1
> Accept: */*
> content-type:text/plain;
> Content-Length: 66
>
* Recv failure: Connection reset by peer
* Closing connection 0
curl: (56) Recv failure: Connection reset by peer


this seems to be a better fit for what I need.
https://github.com/ElementsProject/lightning/blob/ee3f059e800b7ffcd7f0ffc6e5037899132b05cd/cln-grpc/README.md

[moderator's note: consecutive posts merged]