All Questions
Tagged with offchain-worker substrate-node-template
17
questions
0
votes
1
answer
15
views
Why Off-chain worker does not deduct DispatchError in Substrate?
I am trying Substrate official off-chain example. I am throwing a DispatchError in my extrinsic.
#[pallet::call_index(0)]
#[pallet::weight({0})]
pub fn submit_price(origin: OriginFor&...
- 535
0
votes
0
answers
12
views
Not able to submit multiple signed transactions through off-chain worker
I have to submit 2 signed extrinsics through off-chain worker. The code structure of my off-chain worker is like this:
fn offchain_worker(block_number: BlockNumberFor<T>) {
if !...
- 535
0
votes
0
answers
21
views
Is there e2e testing framework/example for Substrate solo chain?
I am working on a live solo chain. I have to test a scenario where I want to hit HTTP API through off chain-worker. Unfortunately it's not possible to test in mock environment.
We can take an example ...
- 535
1
vote
1
answer
35
views
Would it be possible to make HTTP request on chain through pallet extrinsic?
We can make HTTP Get and Post request through Offchain worker. Can we also do the same on chain through pallet extrinsic?
Is there any restriction?
- 535
0
votes
0
answers
25
views
How to send HTTP POST request using Substrate Offchain worker
I am using Substrate official example to send HTTP POST request, which is mentioned here https://docs.substrate.io/reference/how-to-guides/offchain-workers/offchain-http-requests/#read-and-submit-the-...
- 535
0
votes
1
answer
42
views
Substrate Offchain Worker - failed to fetch sample price
I am trying to use Substrate Offchain Worker. I implemented as mentioned here https://github.com/paritytech/polkadot-sdk/tree/master/substrate/frame/examples/offchain-worker.
I am using same sample
...
- 535
1
vote
1
answer
91
views
How to feed private data(confidential information) in Substrate chain through oracle?
Is there any Oracle solution available to feed private data to Substrate chain?
Feeding data to chain has already been answered here How can I build a price feed oracle for my Substrate chain?. And ...
- 535
2
votes
1
answer
43
views
How to make a fn only callable by an offchain worker?
I don't think this is possible but is it?
I have data that comes from an API that ultimately needs to be stored onchain which I don't want to risk having done through a Pays::No fn in case the call ...
- 29
2
votes
0
answers
84
views
How should I add offchain worker(OCW) in frontier when using AccountId20?
In order to add an offchain worker with using AccountId20 as the runtime account type I did following things.
add associated type type AuthorityId: AppCrypto<Self::Public, Self::Signature>; in ...
- 21
1
vote
0
answers
34
views
How to create web socket server through off chain worker?
I need to establish a web socket connection through off chain worker. I asked here How to establish web socket connection in offchain_worker but didn't get any response.
Is there any way/example to ...
- 535
1
vote
1
answer
157
views
How to establish web socket connection in offchain_worker
Is there any way/example to establish web socket connection through off chain worker? There are many Rust examples but I can't use standard library.
Can someone please help me?
- 535
4
votes
1
answer
130
views
Facing issue in adding offchain worker
I'm using pow substrate chain.
I'm running 3 validators by using these commands:
For bob
./target/release/node-template \
--base-path /tmp/bob \
--chain local \
--bob \
--port 30335 \
--rpc-port 9944 \...
- 1,950
4
votes
2
answers
210
views
Read a value from offchain storage of a node
I want to read a single value from OffchainStorage of a live substrate node. Is it possible? Assume I can not use localStorageGet rpc request because it is an unsafe rpc.
- 91
2
votes
1
answer
130
views
Offchain Worker Not Initializing - Cumulus Parachain Template
I am observing unexpected behavior with the Cumulus Parachain Template. Our pallet uses off-chain workers (OCW), and the functionality successfully runs when we attach it to the Substrate Node ...
- 65
1
vote
1
answer
42
views
how does work offchain in substrate ( pokadot ) [closed]
I Wanna know about off-chain in the substrate ( Polkadot ) how does work?
How is it mine from the onchain ( main chain in Polkadot )?
maybe somebody wants to hack the off-chain and they do it a ...
