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Pull Hyperledger Fabric Peer Image
How to Pull Hyperledger Fabric Peer Image from docker hub? You can follow this tutorial to Pull Hyperledger Fabric Peer Image from docker hub. 1. Check the Docker local repository: $ docker image list | grep fabric-peer hyperledger/fabric-peer latest a1e3874f338b 3 weeks ago 178MB hyperledger/fabric...
2019-05-10, 213👍, 0💬

Turn on Ledger Peer Operation RESTful API
How to Turn on Ledger Peer Operation RESTful API? You can follow this tutorial to Turn on Ledger Peer Operation RESTful API. 1. Update Docker Compose YAML file, docker-compose-peer.yaml to override the "operations" settings: $ cd fabric-peer $ vi docker-compose-peer.yaml # Copyright (c) FYIcenter.co...
2019-05-10, 207👍, 0💬

Default core.yaml in Peer Docker Image
What is the Default core.yaml file in Peer Docker Image? The default core.yaml file in the Peer Docker Image is the default version of core.yaml, which provides settings to control the behavior of the Ledger peer. If you deploy the Peer Docker container without your own version of core.yaml, the def...
2019-05-10, 205👍, 0💬

What Is Ledger Peer Operation RESTful API
What is Ledger Peer Operation RESTful API? Ledger Peer Operation RESTful API is RESTful Web service provided by a ledger peer. It is different than and separated from the primary ledger Web service provided by the ledger peer. Ledger Peer Operation RESTful API exposes the following functionalities: ...
2019-05-10, 202👍, 0💬

Authentication Response Received from Azure AD v2
How to process the authentication response received from Azure AD v2.0 service after sending a sign-on authentication request? After Azure AD v2.0 service receives a sign-on authentication request from the end user's Web browser, it will process the request and redirect the Web browser to the "redir...
2019-05-03, 333👍, 0💬

Azure AD v2 Error: Invalid Reply URL
Why Azure AD v2.0 display this error message: AADSTS50011: The reply url specified in the request does not match the reply URLsconfigured for the application? The root cause of this error is that you forgot the add the "redirect_uri" in your authentication request to Application ID settings on Azure...
2019-05-03, 243👍, 0💬

Azure AD v2 Authentication Request Test Page
How to build an Azure AD 2.0 Authentication Request Test page? The Authentication Request is the first call to the Azure AD service. You can build a simple Web form page to test different behavior of the Authentication Request. Here is an example, Azure-AD-2-Authentication-Requ est-Test.html:&lt...
2019-05-03, 233👍, 0💬

Initiate Azure AD v2 Authentication Request
How to initiate Azure AD v2.0 Sign-On Authentication Request? The Azure AD v2.0 Sign-On Authentication Request must be initiated from the end user's Web browser, because the Azure AD service needs to communicate with the Web browser to make sure that the end user is signed on to an AD (Active Direct...
2019-05-03, 230👍, 0💬

Process Azure AD v2 Authentication Request
How to the Azure AD v2.0 Sign-On Authentication Request is process by Azure AD service? When Azure AD service receives a Sign-On Authentication Request from an end user's Web browser, it will: Verify if the "client_id" value in the request is valid. If not, display an error message page to the end u...
2019-05-03, 227👍, 0💬

register-user.js - Register New User
How to write a Node.js script to Register New Users to ca.example.com? If you are an administrator on ca.example.com, you can register other new users to ca.example.com. Here is sample Node.js script, register-user.js, that uses your "admin" identity from the local wallet to register a new user to o...
2019-04-22, 330👍, 0💬

submit-transaction.js - Submit Chaincode Transaction
How to write a Node.js script to submit a transaction defined in the Invoke method of a chaincode? Here is sample Node.js script, submit-transaction.js, that uses a given user identity from the local wallet to submit a transaction on chaincode. /* Copyright (c) FYIcenter.com */ 'use strict'; const {...
2019-04-22, 329👍, 0💬

Differences of evaluateTransaction() and submitTransaction()
What are the differences of Differences of evaluateTransaction() and submitTransaction() of the fabric-network.Contract class? Here are the Differences of evaluateTransaction() and submitTransaction() of the fabric-network.Contract class: evaluateTransaction() method - Calls the given transaction fu...
2019-04-22, 325👍, 0💬

wallet-import.js - Import Keys to Wallet
How to write a Node.js script to Import Keys to Wallet? After enroll (sign in) to ca.example.com, you will receive your private key and a certificate of your public key. You can save import them into a local wallet. Here is sample Node.js script, wallet-import.js, that enrolls (signs in) to ca.examp...
2019-04-22, 292👍, 0💬

evaluate-transaction.js - Evaluate Chaincode Transaction
How to write a Node.js script to evaluate a transaction defined in the Invoke method of a chaincode? Here is sample Node.js script, evaluate-transaction.js, that uses a given user identity from the local wallet to evaluate a transaction on chaincode. /* Copyright (c) FYIcenter.com */ 'use strict'; c...
2019-04-22, 284👍, 0💬

Hyperledger Tutorials
Where to find tutorials on Hyperledger? I want to know how to create Hyperledger applications. Here is a large collection of tutorials to answer many frequently asked questions compiled by FYIcenter.com team about Hyperledger: Introduction to Hyperledger What Is Hyperledger What Is Blockchain What I...
2019-04-19, 240👍, 0💬

What Is Hyperledger
What Is Hyperledger? Hyperledger is an open source project for developing blockchain-based application frameworks and tools. Currently, Hyperledger is working on the following frameworks: Hyperledger Burrow v.0.21.0, 2019 - Hyperledger Burrow is a blockchain client including a built-to-specification...
2019-04-19, 145👍, 0💬

Introduction to Hyperledger
Where to find tutorials as Introduction to Hyperledger. Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team as Introduction to Hyperledger. What Is Hyperledger What Is Blockchain What Is Distributed Ledger What Is Smart Contract   ⇒ What Is Hyperledge...
2019-04-19, 145👍, 0💬

CouchDB Server Admin Web Portal
What is CouchDB Server Admin Web Portal? If you are running BYFN (Build Your First Network) with the CouchDB option, the World State of each peer node is stored a CouchDB server running as Docker container. The CouchDB server supports an admin web portal that allows you manage the CouchDB server, it...
2019-04-19, 207👍, 0💬

Impact of Stopping Chaincode Container
What is the impact of stopping a chaincode container of a peer? We know that if a Peer has chaincode installed, it will run it as chaincode container to help the channel to perform a transaction on the chaincode. If you stop a chaincode container of a peer who is not a required member of the chainco...
2019-04-17, 207👍, 0💬

Not All Member Peers Run Chaincode
How to find out which member peers are running a given chaincode? When a chaincode is instantiated on a channel, you don't need all member peers to install the chaincode and run it. But we have to have some member peers to install and run it. Otherwise, no transactions can be performed on this chain...
2019-04-17, 198👍, 0💬

Auto-Start of Required Chaincode Container
Why a chaincode container is automatically started? A chaincode container will be automatically started, if a chaincode is invoked and the chaincode container's peer is a required peer for the chaincode. Let's continue with the previous tutorial to see this behavior. 6. Stop the chaincode container ...
2019-04-17, 197👍, 0💬

Instantiate Chaincode on BYFN Channel
How to Instantiate Chaincode on BYFN Channel? You can follow this tutorial to Instantiate Chaincode on BYFN Channel manually. 1. Verify the installed chaincode: $ docker exec -it cli bash bash-4.4# echo $CORE_PEER_ADDRESS peer0.org2.example.com:7051 bash-4.4# peer chaincode list --installed Get inst...
2019-04-14, 318👍, 0💬

Hyperledger Composer Playground
Where to find tutorials on Hyperledger Composer Playground. Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Hyperledger Composer Playground. What Is Hyperledger Composer Playground Start Hyperledger Composer Playground What Is Basic Sample Busi...
2019-04-13, 159👍, 0💬

Update Anchor Peer of Each BYFN Organization
How to Update Anchor Peer of Each BYFN Organization? You can follow this tutorial to Update Anchor Peer of Each BYFN Organization. 1. Update the default peer as the anchor peer: bash-4.4# echo $CORE_PEER_ADDRESS peer0.org2.example.com:7051 bash-4.4# peer channel update -o orderer.example.com:7050 -c...
2019-04-13, 247👍, 0💬

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