EthPhoto

EthPhoto is an Ethereum based photo sharing DAPP!

Installation

This DAPP will work on any OS that supports NodeJS. The installation instructions are written for Debain based systems. Ensure git is installed before proceeding.

• First, copy the folder photoDapp to your system and cd into it.

• Install nvm and get latest version of Node (>=6.9.0) and npm (>=4.2.0), using the following script.

bash install_nvm.sh

• Now install testrpc to simulate an Ethereum network (testnet).

npm install -g ethereumjs-testrpc

• Now install ipfs for file-sharing on the Dapp network, using the following script.

bash install_ipfs.sh

• Install all necessary node packages in the folder photoDapp.

npm install

Running the software

• To simulate the required testnet, start a testrpc of 10 clients and a high gas limit on a terminal.

testrpc -l 20000000000000000000000000

• In another terminal, initialize IPFS and start the IPFS daemon.

ipfs init
ipfs daemon

• Now compile and deploy our Solidity contract on Ethereum testnet.

node create_contract.js

• Now start two nodes that connects to Ethereum testnet.

node node_one.js
node node_two.js

• Access the network at localhost:3050 and localhost:3051 as two nodes in your browser.

Note for users behind a proxy

If you are installing the software behind a proxy network, ensure that you configure git and npm to work with proxy.

git config --global http.proxy http://proxyuser:[email protected]:8080
git config --global https.proxy http://proxyuser:[email protected]:8080

Also, configure npm after it's installation, if you are behind a proxy server.

npm config set proxy http://proxy.company.com:8080
npm config set https-proxy http://proxy.company.com:8080

IPFS and Proxy

Due to port filtering, IPFS cannot function behind a proxy server. So, while running IPFS daemon and during further usage of the software, you'll have to use connect to a network that's not behind a proxy.