status-js

Javascript client for sending / receiving messages in Status

WIP. DO NOT USE IN PRODUCTION. HIGH RISK ⚠

Installation

npm install status-js-api

Alternatively, you can use yarn.

Usage

Requirements

This package requires geth, status-go, or murmur to be able to connect to Whisper v6.

Using geth

Use the following command and flags to start geth

$ geth --testnet --syncmode=light --ws --wsport=8546 --wsaddr=localhost --wsorigins=statusjs --rpc --maxpeers=25 --shh --shh.pow=0.002 --wsapi=web3,shh,admin

Also, due to the lack of nodes with Whisper enabled, you need to create a static-nodes.json file, that must be placed in a specific path (if using ropsten in a linux environment, ~/.ethereum/testnet/geth/static-nodes.json

Using murmur

$ murmur-client --ws --no-bridge

See murmur documentation for additional details.

Using status-go

$ /path/to/status-go/statusd

See status-go documentation for additional details.

API

constructor

Constructs a new status client object

new StatusJS();

// basic instantiation
const StatusJS = require('status-js-api');
const status = new StatusJS();

connect

Connect to a web3 whisper provider

status.connect(url, [privateKey]);

await status.connect("ws://localhost:8546", "0x1122...9900");

Arguments

• url - an address of a valid http, websocket or ipc provider.
• privateKey - private key of the user that will send / receive messages. It will be added to the whisper node. Default: random private key. Optional

connectToProvider

Connect to a custom web3 whisper provider

status.connectToProvider(provider, [privateKey]);

await status.connect(murmurClient.provider, "0x1122...9900");

Arguments

• provider - Custom web3 provider
• privateKey - private key of the user that will send / receive messages. It will be added to the whisper node. Default: random private key. Optional

isListening

Checks if the node is listening for peers.

status.isListening()

if (status.isListening()) {
  // Do something
}

joinChat

Joins a public channel

status.joinChat(channel);

await status.joinChat("#mytest");

Arguments

• channel - public channel name.

onUserMessage

Process incoming private messages

status.onUserMessage(cb); // private messages

status.onUserMessage((err, data) => {
  if(err) 
    console.error(err);
  else
    console.dir(data); // message information
});

Arguments

• cb - a callback that will be called, possibly with an error, when a message is received. If there is no error, the first argument will be null.

onChannelMessage

Process incoming public messages

status.onChannelMessage(channel, cb); // public messages

status.onChannelMessage("#mytest", (err, data) => {
  if(err) 
    console.error(err);
  else
    console.dir(data); // message information
});

Arguments

• channel - public channel name.
• cb - a callback that will be called, possibly with an error, when a message is received. If there is no error, the first argument will be null.

onMessage

Process both incoming public and private messages

status.onMessage(channel, cb); // public messages
status.onMessage(cb); // private messages

status.onMessage("#mytest", (err, data) => {
  if(err) 
    console.error(err);
  else
    console.dir(data); // message information
});

Arguments

• channel - public channel name. Optional
• cb - a callback that will be called, possibly with an error, when a message is received. If there is no error, the first argument will be null.

onChatRequest

Process incoming chat requests messages from other users

status.onChatRequest(cb);

status.onChatRequest((err, data) => {
  if(err) 
    console.error(err);
  else
    console.dir(data); 
    // message information
    // {
    //    displayName, // Display Name
    //    profilePic, // Base64 Profile picture
    //    username // Random username (Adjective1 Adjective2 Animal)
    // }
});

Arguments

• cb - a callback that will be called, possibly with an error, when a chat request is received. If there is no error, the first argument will be null.

isSubscribedTo

Check if client has joined a channel

status.isSubscribedTo(channel);

if (status.isSubscribedTo("#mytest")) {
  // Do something
}

Arguments

• channel - public channel name.

leaveChat

Leaves a public channel

status.leaveChat(channel);

status.leaveChat("#mytest");

Arguments

• channel - public channel name.

sendGroupMessage

Send a message to a public channel

status.sendGroupMessage(channel, message, [cb]);

status.sendGroupMessage("#mytest", "Hello world!",  (err, data) => {
  if (err) {
    console.error(err);
    return;
  }

  // Do something  
});

Arguments

• channel - public channel name.
• msg - message to send
• cb - a callback that will be called, possibly with an error, when a message is sent. If there is no error, the first argument will be null.

sendUserMessage

Send a message to a contact code

status.sendUserMessage(pubKey, message, [cb]);

status.sendUserMessage("0x1122...9900", "Hello world!",  (err, data) => {
  if (err) {
    console.error(err);
    return;
  }

  // Do something  
});

Arguments

• pubKey - user public key
• msg - message to send
• cb - a callback that will be called, possibly with an error, when a message is sent. If there is no error, the first argument will be null.

TODO: Create documentation for sending messages

• sendJsonMessage(destination, msg, [cb])
• sendMessage(destination, msg, [cb])

getPublicKey

Returns a string with the public key

status.getPublicKey();

await status.getPublicKey(); // "0x1122...9900"

getUserName

Returns the random username for the public key

status.getUserName([pubKey]);

await status.getUserName(); // "Adjective1 Adjective2 Animal"
await status.getUserName("0x1122...9900");

Arguments

• pubKey - public key to obtain the username. Default: generate username for the current user. Optional.

addContact

Add a contact by pubKey. (TODO: send contact request msg)

status.addContact(pubKey, [cb]);

status.addContact("0x1122...9900");

Arguments

• pubKey - public key to add as a contact.
• cb - a callback that will be called, possibly with an error, when the contact is added. If there is no error, the first argument will be null. Optional.

removeContact

Remove a contact by pubKey.

status.removeContact(pubKey);

status.removeContact("0x1122...9900");

Arguments

• pubKey - public key to remove from known contacts.

mailservers.useMailserver

Use a specific mailserver to obtain old messages. Active mailservers from Status.im can be found here

status.mailservers.useMailserver(enode, [cb]);

const enode = "enode://0011...aabb@111.222.33.44:30303";
status.mailservers.useMailserver(enode, (err, res) => {
  if (err) {
    console.err("Error: " + err);
    return;
  }

  // Do something
});

Arguments

• enode - Mailserver enode address.
• cb - a callback that will be called, possibly with an error, when the mailserver is selected successfully. If there is no error, the first argument will be null. Optional.

mailservers.requestUserMessages

Once a mailserver is selected, request old private messages. Messages will be received in the onMessage or onUserMessage handler.

* mailservers.requestUserMessages(options, [cb])

const enode = "enode://0011...aabb@111.222.33.44:30303";
status.mailservers.useMailserver(enode, (err, res) => {
  if (err) {
    console.err("Error: " + err);
    return;
  }
  
  const from = parseInt((new Date()).getTime() / 1000 - 86400, 10);
  const to = parseInt((new Date()).getTime() / 1000, 10);
  
  // User messages
  status.mailservers.requestUserMessages({from, to}, (err, res) => { 
    if(err) 
      console.log(err); 

    // Do something
  });
});

Arguments

• options - an object containing parameters .
• cb - a callback that will be called, possibly with an error, when the old private messages are requested successfully. If there is no error, the first argument will be null. Optional.

Options

• from - lower bound of time range as unix timestamp, default is 24 hours back from now.
• to - upper bound of time range as unix timestamp, default is now
• timeout - TODO: research this in status-go, default is 30
• limit - TODO: research this in status-go, default is 0

mailservers.requestChannelMessages

Once a mailserver is selected, request old public messages for a channel. Messages will be received in the onMessage or onChannelMessage handler.

* mailservers.requestChannelMessages(channel, [cb])

const enode = "enode://0011...aabb@111.222.33.44:30303";
status.mailservers.useMailserver(enode, (err, res) => {
  if (err) {
    console.err("Error: " + err);
    return;
  }

  const from = parseInt((new Date()).getTime() / 1000 - 86400, 10);
  const to = parseInt((new Date()).getTime() / 1000, 10);

  // Channel messages
  status.mailservers.requestChannelMessages("mytest", {from, to}, (err, res) => { 
    if(err) 
      console.log(err); 

    // Do something
  });
});

Arguments

• channel - channel name to obtain messages from. A 4 bytes hex topic can be used too.
• options - an object containing parameters .
• cb - a callback that will be called, possibly with an error, when the old private messages are requested successfully. If there is no error, the first argument will be null. Optional.

Options

• from - lower bound of time range as unix timestamp, default is 24 hours back from now.
• to - upper bound of time range as unix timestamp, default is now
• timeout - TODO: research this in status-go, default is 30
• limit - TODO: research this in status-go, default is 0

Development

Clone the repo via git:

$ git clone https://github.com/status-im/status-js.git

And then install the dependencies with yarn.

$ cd status-js
$ yarn

To develop:

$ yarn run start
$ yarn run lint

Contribution

Thank you for considering to help out with the source code! We welcome contributions from anyone on the internet, and are grateful for even the smallest of fixes!

If you'd like to contribute to status-js, please fork, fix, commit and send a pull request for the maintainers to review and merge into the main code base. If you wish to submit more complex changes though, please check up with the core devs first on #status-js channel to ensure those changes are in line with the general philosophy of the project and/or get some early feedback which can make both your efforts much lighter as well as our review and merge procedures quick and simple.