Questions tagged [whisper]

Whisper is an upcoming P2P messaging protocol that will be integrated into the EtherBrowser

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How to use shh.subscribe

I want to use the web3-shh functionality. I used the example from readthedocs(web3-shh). Everything works except for the subscribe operation. It raises following error: ...
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ethereum whisper's method 'addPrivateKey' returning different keyid pair for same private key

Can somebody please explain why running this code produces different key-id pair each time? Is it not supposed to be unique for a given pvt key? web3.shh.addPrivateKey('...
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What is the current state of Swarm and Whisper?

What is the current state of Swarm ? Are they decentralized as they claim they are or they are still in development ? I am asking this because I've seen that there is no incentive for the nodes to ...
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Implementing Whisper in Dapp without local node?

I was thinking of implementing chat functionality on top of whisper, however the few examples I've seen all have running a local node as the first step. Example - https://github.com/ethereum/meteor-...
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2answers
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What are some good alternatives to Whisper for blockchain messaging?

I have been experimenting with Ethereum and I achieved good results with Whisper in a private network. The main problem though is that it is pretty slow even when nodes are running in the same ...
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Whisper shh subscribe VS newMessageFilter

Can anyone explain the difference between shh_subscribe and shh_newMessageFilter functions? Their getters (shh_subscription and shh_getFilterMessages) return almost identical results.
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50 views

How to enable mail server (mailserver) when starting a whisper node by using “geth”?

As title, I can't find any flag about enabling the "mailserver" when starting whisper node. However, I found a Diagnostic Tool called "wnode":https://github.com/ethereum/go-ethereum/wiki/Diagnostic-...
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What is the position of Whisper and Swarm in the Ethereum 2.0 Roadmap

Back in 2015, Ethereum vision was to be a "World Computer" relying on three main complementary technologies: Ethereum for decentralized Logic Swarm for decentralized Storage Whisper for decentralized ...
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Can I expose a dapp via whisper ?

I have a question regarding the possibility and probably the steps to do in order to be able to export my App via the whisper protocol. how to do it and in which case it can be better than other ...
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1answer
94 views

How to connect REACT-NATIVE with whisper ethereum protocol using GETH or any light Client or API

is there any thing connect to whisper(web3.shh) protocol in react-native. How to connect REACT-NATIVE with whisper ethereum protocol using GETH or any light Client or API
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Relationship between Ethereum block and Whisper

When a message is sent to another node with a whisper, it is immediately visible regardless of the block. If so, does the block have a record of using whisper?
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110 views

Does mainnet support Whisper protocol?

I am interested in Whisper. I read that Whisper is based on Ethereum p2p protocol on github. Then does ethereum mainnet support Whisper on itself too ? Anyway, what I wonder is ... 1. Is Whisper only ...
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Whisper: How to send a message from one node to another that is located on different host?

geth version: 1.8.15-unstable Python: 3.5 OS: osx/linux I have followed this answer. On the answer's approach, I observe that each node can only send message to itself and other nodes don't filter/...
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Is there any Ropsten (or any other testnet) node with whisper enabled?

I am trying the embark framework which has whisper integration. I wanted to deploy the dapp and test it live. If there is one could you let me know the endpoint and port. Thanks :)
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How to send 1-N signalling or broadcast messages on Whisper?

From Whisper wiki: Low-latency, 1-1 or 1-N signalling messages. Shh.post(self, message:) and Whisper Usage / shh.post Creates a whisper message and injects it into the network for ...
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Whisper: Error: failed to reach the PoW target, specified pow time (5 seconds) was insufficient

From web3.py docs/SHH_API: ttl: Time-to-live in seconds. powTime: Maximal time in seconds to be spent on proof of work. powTarget: Minimal PoW target required for this message. On the ...
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1answer
262 views

Whisper: How could we print received messages that are actually stored in the memory when geth was closed or shh.newMessageFilter() is not activated?

Whisper Protocol is not well documented related to its usage. I believe this issue will help other users who might face with similar problem. Each sent message has time-to-live in seconds (ttl), that ...
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1answer
207 views

Whisper Protocol: How could I use already generated keyPair or symKey after geth is restarted? Key pair cannot be stored //Error: non-existent key ID

My goal is to send a message from one ethereum node to another one by using same public key of the receiver. In order to accomplish it, I have followed this guide that uses Whisper Protocol. But after ...
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1answer
442 views

Whisper Protocol: How to decode the received message on the receiver node?

My goal is to send a message from one ethereum node to another one. In order to accomplish it, I have followed this answer that uses Whisper Protocol. In summary approach I followed from the linked ...
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1answer
365 views

web3.js: Error: The method shh_newSymKey does not exist/is not available on Web3.js

My main goal is to call web3.shh functions using RPC API , Web3.py or Web3.js. I can call web3.shh functions when I use geth attach; which is my last option to do. I am following this answer. geth ...
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1answer
196 views

How can I receive message by golang - whisper

In geth --shh --rpc console, for example I type f = shh.newMessageFilter({privateKeyId: id}, function(error, messages){console.log(JSON.stringify(messages))}) to receive a posted message by ...
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1answer
260 views

How to start geth for whisper only without blockchain stuff?

I'm writing a chat app on top of Whisper; the app is supposed to manage the lifecycle of the Ethereum node. One way to build to is to use wnode in the background & communicate with it using ...
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1answer
244 views

How do the ethereum components work together

hy i have been reading about the ethereum project and its components, i understand that there are 3 major components (EVM, swarm, whisper) Swarm is a peer to peer data sharing network in which ...
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713 views

Smart Contract events

I am developing a Dapp that contains a notification between two Users. for example : User 1 (Student): send a transaction that contains data to be confirmed. User 2 (Professor): receive a ...
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When should I use Whisper or PSS over Traditional Message Channel like AWS SQS?

What are the benefits using Whisper or swarm/PSS over using a centralized service like Amazon SQS? My use-case is: deliver information (to say to another party that they should do an action in a ...
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1answer
315 views

Sending whisper messages over testnet?

I managed to setup a private blockchain and send whisper messages between my clients. Now, i want to accomplish the very same thing over either the mainnet or one of the testnets. But it seems that ...
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117 views

How does whisper work in Ethereum?

I am trying to build a Dapp and I need to send messages between any two users. The messages would be used to reach a sort of private agreement between them. The agreement then could be published on ...
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1answer
90 views

Exchange messages between two clients of Dapp without spending gas?

Let's say that I want to build a Dapp such that users can exchange messages between each other. I guess you can consider it a chat Dapp. Is there any way for the two users to find the "address" of ...
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1answer
92 views

Topics in messages are ignored in filters from shh console

I have setup a private network for testing Whisper. I cannot make filters based on topics to be of any use, because regardless of how I set them, all messages are received. I already have found some ...
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1answer
89 views

Disable proof of work in Whisper

I have a private network and am looking to disable Whisper's required Proof of Work when sending a message. This issue talks about how the source prevents this, but I'm wondering if there's another ...
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2answers
96 views

Where does Whisper store encryption keys?

I've noticed that whisper persists symmetric and asymmetric keys created in the geth console by referencing their id, but where does it save these keys, and can the directory be configured? Geth's --...
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509 views

Sending messages without fees

Are there any ways to send simple messages on the Ethereum blockchain without incurring any gas fees at all for the end user? If this can't be done with Ethereum in solidity or newly created ERC20 ...
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2answers
808 views

Using Whisper with web3.js

I have been trying to figure out how to interact with whisper using web3. I have been able to successfully send (and receive) a message using geth console, but have been unable to do the same using ...
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1answer
516 views

Whisper V6 vs Whisper V5

Could some one please summarize the differences between V5 and V6 tell us where to find documentation - I could not find any although I understand this is in EIP 627 is it "production ready" ? say ...
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2answers
511 views

Do nodes need to have static IP addresses to connect to a private blockchain?

A private blockchain on Ethereum: When we want to add more than one nodes, e.g. two nodes A and B, to a private blockchain, we let node A add the other node: admin.addPeer() and node B call A. Both ...
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1answer
293 views

How much Whisper is reliable?

I'm thinking on how to implement a P2P messaging platform using Whisper (https://github.com/ethereum/wiki/wiki/Whisper), but before of starting designing a protocol on top of it and work on its ...
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1answer
216 views

Geth and whisper default

I was playing with dumpconfig and after that added --shh and dumped configuration again to see the differences but there weren't any. My section of the Whisper config is: [Shh] MaxMessageSize = ...
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1answer
511 views

How to use Whisper protocol in solidity smart contract (Documentation)

I am developing a smart contract and it will need to communicate with ethereum user addresses (openly or privately). I need to make use of a encrypted messaging protocol. After some searching, I found ...
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1answer
235 views

Does Swarm architecture supports streaming video files

Though the prototypes are less in number, swarm architecture is able to upload picture files (alpha tested in LETH android app).Is Swarm presently equipped to support streaming videos or pre-recorded ...
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1answer
2k views

Looking for a working Whisper example

I was looking to develop an application using Whisper & NodeJS and I'm having trouble finding an example that works and is updated. I've encountered this doc web3js.readthedocs.io/en/1.0/web3-shh....
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420 views

A decentralized marketplace with Swarm/Whisper and Ethereum Smart Contract

I was thinking about a workflow where we could use Swarm, Whisper and Ethereum in order to sell any kind of digital data. I drew a sequence chart and I wanted to have some feedbacks: Is there ...
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1answer
257 views

How whisper messages being routed in Ethereum Network?

Does the Whisper messages are broadcasted to all Ethereum nodes? or is there any internal routing, if yes how?
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1answer
582 views

Can I send a whisper (shh) message to an Ethereum address?

It seems that we can only send a message by creating new symmetric keys and key pairs ( shh.newSymKey() and shh.newKeyPair() Then post shh.post() a message using the parameters: symKeyId which ...
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126 views

On-chain text encryption using Whisper protocol

Could one send a 10-character encrypted message within an ERC-20 transaction using the whisper protocol ON-CHAIN? Or could that only be achieved by running private nodes and setting up a p2p server? ...
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101 views

Alternate messaging infrastructure [closed]

How can organizations with existing messaging infrastructures integrate with Ethereum? For example, an organization with a large investment in Solace Messaging asked us how to integrate Ethereum ...
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1answer
116 views

Guard access to digital assets

In the datamarket project http://datamarket.at/ we would like to guard access to digital assets (data, services) which will not be stored on the Ethereum ledger. We will guard access to these ...
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Can I use web3.shh with Parity client?

I'm trying to whisper a message using web3.shh following the example here: https://github.com/paritytech/parity/wiki/Whisper-Overview web3.shh.post({ "topic": 't', "payload": 'p'}); And it throws an ...
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1answer
781 views

Is there a layered architecture diagram for Ethereum?

I wonder if there is a layered architecture diagram for Ethereum that shows from the lowest level to the highest level like the one of Java (http://docs.oracle.com/javase/8/docs/index.html)? It could ...
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1answer
274 views

Whisper shh_getMessages not receiving posted messages with shh_post

I am using Whisper shh_post and posting some messages (multicast with no "to") and that seems to be working. I.e.: the response's error count is zero. And then I have another small console app that I ...
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1answer
1k views

Why is my Whisper message not relayed in Status.IM

I've installed the test version of Status.IM and tried to message other fellow users who were willing to share their contact with me. However, the messages are always stuck in sending status: Why is ...