diff --git a/README.md b/README.md index 42020f41c..f8ca79d95 100644 --- a/README.md +++ b/README.md @@ -6,21 +6,21 @@ This repo provides a package you can use to build with XMTP in a React Native or Is there a feature you need that's currently supported? Please [open an issue](https://github.com/xmtp/xmtp-react-native/issues). -Or better yet, open a PR and we'll get it reviewed and merged as soon as possible. If you contribute a PR that gets merged into this repo, you'll be eligible to [claim this XMTP contributor POAP](https://www.gitpoap.io/gp/1042)! +Or better yet, open a PR and we'll get it reviewed and merged as soon as possible. If you contribute a PR that gets merged into this repo, you'll be eligible to [claim this XMTP contributor POAP](https://www.gitpoap.io/gp/1100)! -To learn more about XMTP and get answers to frequently asked questions, see [XMTP documentation](https://xmtp.org/docs). +## Documentation -![x-red-sm](https://user-images.githubusercontent.com/510695/163488403-1fb37e86-c673-4b48-954e-8460ae4d4b05.png) +To learn how to use the XMTP React Native SDK and get answers to frequently asked questions, see [XMTP documentation](https://docs.xmtp.org/). -## Reference docs +## SDK reference -Access the `xmtp-react-native` client SDK [reference documentation](https://xmtp.github.io/xmtp-react-native/modules.html). +Access the [XMTP React Native SDK reference documentation](https://xmtp.github.io/xmtp-react-native/modules.html). ## Example app -Use the [XMTP React Native example app](example) as a tool to start building an app with XMTP. This basic messaging app has an intentionally unopinionated UI to help make it easier for you to build with. [See example/README.md](example/README.md) for more instructions. +Use the [XMTP React Native example app](example) as a tool to start building an app with XMTP. This basic messaging app has an intentionally unopinionated UI to help make it easier for you to build with. See [example/README.md](example/README.md) for more instructions. -### Quickstart to use the example app: +### Example app quickstart Follow the [React Native guide](https://reactnative.dev/docs/environment-setup) to set up a CLI environment. @@ -37,24 +37,27 @@ yarn run [ios or android] npx expo prebuild ``` -## Install in bare React Native project +## Install in a bare React Native project -For bare React Native projects, [install and configure the `expo` package](https://docs.expo.dev/bare/installing-expo-modules/) before continuing. +1. Install and configure the [expo package](https://docs.expo.dev/bare/installing-expo-modules/). -then add the required babel plugin -```bash -yarn add @babel/plugin-proposal-export-namespace-from -D -``` -then add the plugin to your babel.config.js -```js -module.exports = { - presets: ['module:@react-native/babel-preset'], - plugins: [ - '@babel/plugin-proposal-export-namespace-from', - // ... other plugins - ], -}; -``` +2. Add the required babel plugin. + + ```bash + yarn add @babel/plugin-proposal-export-namespace-from -D + ``` + +3. Add the plugin to your `babel.config.js`. + + ```js + module.exports = { + presets: ['module:@react-native/babel-preset'], + plugins: [ + '@babel/plugin-proposal-export-namespace-from', + // ... other plugins + ], + }; + ``` ### Add the package to your dependencies @@ -64,343 +67,20 @@ yarn add @xmtp/react-native-sdk ### Configure for iOS -In the `ios` directory, update your `Podfile` file as follows: - -- Set this value: `platform :ios, '16.0'`. This is required by XMTP. +1. In the `ios` directory, update your `Podfile` file to set this value: `platform :ios, '16.0'`. This is required by XMTP. -If you get the error `The SQLCipher Sqlite extension is not present, but an encryption key is given` +2. Run: -- At the project configuration level in XCode make sure that xmtpV3 is loaded before all other packages by setting `Other Linker Flags` first item to `-l"xmtpv3"` + ```bash + npx pod-install + ``` -```bash -npx pod-install -``` +If you get the error `The SQLCipher Sqlite extension is not present, but an encryption key is given`, at the project configuration level in XCode, ensure that `xmtpV3` is loaded before all other packages by setting `Other Linker Flags` first item to `-l"xmtpv3"`. ### Configure for Android Your app must use Android `minSdkVersion = 22` to work with the `xmtp-react-native` SDK. -## Usage - -The [XMTP message API](https://xmtp.org/docs/concepts/architectural-overview#network-layer) revolves around a network client that allows retrieving and sending messages to other network participants. A client must be connected to a wallet on startup. If this is the very first time the client is created, the client will generate a [key bundle](https://xmtp.org/docs/concepts/key-generation-and-usage) that is used to [encrypt and authenticate messages](https://xmtp.org/docs/concepts/invitation-and-message-encryption). The key bundle persists encrypted in the network using a [wallet signature](https://xmtp.org/docs/concepts/account-signatures). The public side of the key bundle is also regularly advertised on the network to allow parties to establish shared encryption keys. All this happens transparently, without requiring any additional code. - -```tsx -import { Client } from '@xmtp/react-native-sdk' -import { ConnectWallet, useSigner } from "@thirdweb-dev/react-native"; - -// Create the client with your wallet. This will connect to the XMTP development network by default -const xmtp = await Client.create(useSigner()); -// Start a conversation with XMTP -const conversation = await xmtp.conversations.newConversation( - '0x3F11b27F323b62B159D2642964fa27C46C841897' -) -// Load all messages in the conversation -const messages = await conversation.messages() -// Send a message -await conversation.send('gm') -// Listen for new messages in the conversation -for await (const message of await conversation.streamMessages()) { - console.log(`[${message.senderAddress}]: ${message.content}`) -} -``` - -Currently, network nodes are configured to rate limit high-volume publishing from clients. A rate-limited client can expect to receive a 429 status code response from a node. Rate limits can change at any time in the interest of maintaining network health. - -## Use local storage - -> **Important** -> If you are building a production-grade app, be sure to use an architecture that includes a local cache backed by an XMTP SDK. - -To learn more, see [Use local-first architecture](https://xmtp.org/docs/build/local-first). - -## Create a client - -A client is created with `Client.create(wallet: Signer): Promise` that requires passing in a connected wallet that implements the Signer interface. The client will request a wallet signature in two cases: - -1. To sign the newly generated key bundle. This happens only the very first time when key bundle is not found in storage. -2. To sign a random salt used to encrypt the key bundle in storage. This happens every time the client is started (including the very first time). - -> **Important** -> The client connects to the XMTP `dev` environment by default. [Use `ClientOptions`](#configure-the-client) to change this and other parameters of the network connection. - -```tsx -import { Client } from '@xmtp/react-native-sdk' -// Create the client with a `Signer` from your application -const xmtp = await Client.create(wallet) -``` - -### Configure the client - -The client's network connection and key storage method can be configured with these optional parameters of `Client.create`: - -| Parameter | Default | Description | -| ------------------------- | --------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -| appVersion | `undefined` | Add a client app version identifier that's included with API requests.
For example, you can use the following format: `appVersion: APP_NAME + '/' + APP_VERSION`.
Setting this value provides telemetry that shows which apps are using the XMTP client SDK. This information can help XMTP developers provide app support, especially around communicating important SDK updates, including deprecations and required upgrades. | -| env | `dev` | Connect to the specified XMTP network environment. Valid values include `dev`, `production`, or `local`. For important details about working with these environments, see [XMTP `production` and `dev` network environments](#xmtp-production-and-dev-network-environments). | -| codecs | `[new XMTP.ReactionCodec()]` | Add codecs to support additional content types. | - -## Handle conversations - -Most of the time, when interacting with the network, you'll want to do it through `conversations`. Conversations are between two wallets. - -```tsx -import { Client } from '@xmtp/react-native-sdk' -// Create the client with a `Signer` from your application -const xmtp = await Client.create(wallet) -const conversations = xmtp.conversations -``` - -### List existing conversations - -You can get a list of all conversations that have one or more messages. - -```tsx -const allConversations = await xmtp.conversations.list() -// Say gm to everyone you've been chatting with -for (const conversation of allConversations) { - console.log(`Saying GM to ${conversation.peerAddress}`) - await conversation.send('gm') -} -``` - -These conversations include all conversations for a user **regardless of which app created the conversation.** This functionality provides the concept of an [interoperable inbox](https://xmtp.org/docs/concepts/interoperable-inbox), which enables a user to access all of their conversations in any app built with XMTP. - -### Listen for new conversations - -You can also listen for new conversations being started in real-time. This will allow applications to display incoming messages from new contacts. - -> **Warning** -> This stream will continue infinitely. To end the stream you can call `cancelStream()`. - -```tsx -const stream = await xmtp.conversations.stream() -for await (const conversation of stream) { - console.log(`New conversation started with ${conversation.peerAddress}`) - // Say hello to your new friend - await conversation.send('Hi there!') - // Break from the loop to stop listening - break -} -``` - -### Start a new conversation - -You can create a new conversation with any Ethereum address on the XMTP network. - -```tsx -const newConversation = await xmtp.conversations.newConversation( - '0x3F11b27F323b62B159D2642964fa27C46C841897' -) -``` - -## Handle messages - -To be able to send a message, the recipient must have already started their client at least once and consequently advertised their key bundle on the network. Messages are addressed using wallet addresses. The message payload can be a plain string, but other types of content can be supported through the use of `SendOptions`. See [Handle different types of content](#handle-different-types-of-content) for more details. - -```tsx -const conversation = await xmtp.conversations.newConversation( - '0x3F11b27F323b62B159D2642964fa27C46C841897' -) -await conversation.send('Hello world') -``` - -### List messages in a conversation - -You can receive the complete message history in a conversation by calling `conversation.messages()` - -```tsx -for (const conversation of await xmtp.conversations.list()) { - const messagesInConversation = await conversation.messages(before: new Date(new Date().setDate(new Date().getDate() - 1)), after: new Date()) -} -``` - -### List messages in a conversation with pagination - -It may be helpful to retrieve and process the messages in a conversation page by page. - -```tsx -const conversation = await xmtp.conversations.newConversation( - '0x3F11b27F323b62B159D2642964fa27C46C841897' -) - -for await (const page of conversation.messages(limit: 25)) { - for (const msg of page) { - // Breaking from the outer loop will stop the client from requesting any further pages - if (msg.content === 'gm') { - return - } - console.log(msg.content) - } -} -``` - -### Listen for new messages in a conversation - -You can listen for any new messages (incoming or outgoing) in a conversation by calling `conversation.streamMessages()`. - -A successfully received message (that makes it through the decoding and decryption without throwing) can be trusted to be authentic, i.e. that it was sent by the owner of the `message.senderAddress` wallet and that it wasn't modified in transit. The `message.sent` timestamp can be trusted to have been set by the sender. - -The Stream returned by the `stream` methods is an asynchronous iterator and as such usable by a for-await-of loop. Note however that it is by its nature infinite, so any looping construct used with it will not terminate, unless the termination is explicitly initiated by calling `cancelStreamMessages()`. - -```tsx -const conversation = await xmtp.conversations.newConversation( - '0x3F11b27F323b62B159D2642964fa27C46C841897' -) -for await (const message of await conversation.streamMessages()) { - if (message.senderAddress === xmtp.address) { - // This message was sent from me - continue - } - console.log(`New message from ${message.senderAddress}: ${message.content}`) -} -``` - -### Listen for new messages in all conversations - -To listen for any new messages from _all_ conversations, use `conversations.streamAllMessages()`. - -> **Note** -> There is a chance this stream can miss messages if multiple new conversations are received in the time it takes to update the stream to include a new conversation. - -> **Warning** -> This stream will continue infinitely. To end the stream you can call `cancelStreamAllMessages()`. - -```tsx -for await (const message of await xmtp.conversations.streamAllMessages()) { - if (message.senderAddress === xmtp.address) { - // This message was sent from me - continue - } - console.log(`New message from ${message.senderAddress}: ${message.content}`) -} -``` - -## Request and respect user consent - -![Feature status](https://img.shields.io/badge/Feature_status-Alpha-orange) - -The user consent feature enables your app to request and respect user consent preferences. With this feature, another blockchain account address registered on the XMTP network can have one of three consent preference values: - -- Unknown -- Allowed -- Denied - -To learn more, see [Request and respect user consent](https://xmtp.org/docs/build/user-consent). - -## Check if an address is on the network - -If you would like to check and see if a blockchain address is registered on the network before instantiating a client instance, you can use `Client.canMessage`. - -```tsx -import { Client } from '@xmtp/react-native-sdk' - -const isOnProdNetwork = await Client.canMessage( - '0x3F11b27F323b62B159D2642964fa27C46C841897', { env: 'production' } -) -``` - -## Send a broadcast message - -You can send a broadcast message (1:many message or announcement) with XMTP. The recipient sees the message as a DM from the sending wallet address. - -For important information about sending broadcast messages, see [Best practices for broadcast messages](https://xmtp.org/docs/tutorials/broadcast#best-practices-for-broadcast-messages). - -1. Use the bulk query `canMessage` method to identify the wallet addresses that are activated on the XMTP network. -2. Send the message to all of the activated wallet addresses. - -For example: - -```tsx -const ethers = require('ethers') -const { Client } = require('@xmtp/react-native-sdk') - -async function main() { - //Create a random wallet for example purposes. On the frontend you should replace it with the user's wallet (metamask, rainbow, etc) - //Initialize the xmtp client - const xmtp = await Client.createRandom({ env: "dev" }); - - //In this example we are going to broadcast to the GM_BOT wallet (already activated) and a random wallet (not activated) - const GM_BOT = '0x937C0d4a6294cdfa575de17382c7076b579DC176' - const test = ethers.Wallet.createRandom() - const broadcasts_array = [GM_BOT, test.address] - - //Querying the activation status of the wallets - const broadcasts_canMessage = await xmtp.canMessage(broadcasts_array) - for (let i = 0; i < broadcasts_array.length; i++) { - //Checking the activation status of each wallet - const wallet = broadcasts_array[i] - const canMessage = broadcasts_canMessage[i] - if (broadcasts_canMessage[i]) { - //If activated, start - const conversation = await xmtp.conversations.newConversation(wallet) - // Send a message - const sent = await conversation.send('gm') - } - } -} -main() -``` - -## Handle different types of content - -All send functions support `SendOptions` as an optional parameter. The `contentType` option allows specifying different types of content than the default simple string standard content type, which is identified with content type identifier `ContentTypeText`. - -To learn more about content types, see [Content types with XMTP](https://xmtp.org/docs/concepts/content-types). - -Support for other types of content can be added by registering additional `ContentCodecs` with the `Client`. Every codec is associated with a content type identifier, `ContentTypeId`, which is used to signal to the client which codec should be used to process the content that is being sent or received. -For example, see the [Native Codecs](https://github.com/xmtp/xmtp-react-native/tree/main/src/lib/NativeCodecs) available in `xmtp-react-native`. - -```tsx -// Assuming we've loaded a fictional NumberCodec that can be used to encode numbers, -// and is identified with ContentTypeNumber, we can use it as follows. - -xmtp.register(new NumberCodec()) -conversation.send(3.14, { - contentType: ContentTypeNumber -}) -``` - -Additional codecs can be configured through the `ClientOptions` parameter of `Client.create`. The `codecs` option is a list of codec instances that should be added to the default set of codecs (currently only the `TextCodec`). If a codec is added for a content type that is already in the default set, it will replace the original codec. - -```tsx -// Adding support for `xmtp.org/reaction` content type -import { ReactionCodec } from '@xmtp/react-native-sdk' -const xmtp = Client.create(wallet, { codecs: [new ReactionCodec()] }) - -await conversation.send({ - reaction: { - reference: otherMessage.id, - action: "added", - schema: "unicode", - content: "💖", - }, -}); -``` - -To learn more about how to build a custom content type, see [Build a custom content type](https://xmtp.org/docs/content-types/introduction#create-custom-content-types). - -Custom codecs and content types may be proposed as interoperable standards through XRCs. To learn about the custom content type proposal process, see [XIP-5](https://github.com/xmtp/XIPs/blob/main/XIPs/xip-5-message-content-types.md). - -## Manually handle private key storage - -The SDK will handle key storage for the user by encrypting the private key bundle using a signature generated from the wallet, and storing the encrypted payload on the XMTP network. This can be awkward for some server-side applications, where you may only want to give the application access to the XMTP keys but not your wallet keys. Mobile applications may also want to store keys in a secure enclave rather than rely on decrypting the remote keys on the network each time the application starts up. - -You can export the unencrypted key bundle using the static method `Client.exportKeyBundle`, save it somewhere secure, and then provide those keys at a later time to initialize a new client using the exported XMTP identity. - -```js -import { Client } from '@xmtp/react-native-sdk' -// Get the keys using a valid Signer. Save them somewhere secure. -const keys = await Client.exportKeyBundle() -// Create a client using keys returned from getKeys -const client = await Client.createFromKeyBundle(keys, { env: "dev" }) -``` - -The keys returned by `exportKeyBundle` should be treated with the utmost care as compromise of these keys will allow an attacker to impersonate the user on the XMTP network. Ensure these keys are stored somewhere secure and encrypted. - -## Enable the example app to send push notifications - -Check out the `push-notifications-example` branch and follow instructions [in the README](https://github.com/xmtp/xmtp-react-native/blob/push-notifications-example/README.md). - ## 🏗 Breaking revisions Because `xmtp-react-native` is in active development, you should expect breaking revisions that might require you to adopt the latest SDK release to enable your app to continue working as expected. @@ -421,27 +101,3 @@ Following table shows the deprecation schedule. | 2022-08-18 | 2022-11-08 | v6.0.0 | XMTP network will stop supporting the Waku/libp2p based client interface in favor of the new GRPC based interface | Issues and PRs are welcome in accordance with our [contribution guidelines](https://github.com/xmtp/.github/blob/main/CONTRIBUTING.md). - -## XMTP `production` and `dev` network environments - -XMTP provides both `production` and `dev` network environments to support the development phases of your project. - -The `production` and `dev` networks are completely separate and not interchangeable. -For example, for a given blockchain account address, its XMTP identity on `dev` network is completely distinct from its XMTP identity on the `production` network, as are the messages associated with these identities. In addition, XMTP identities and messages created on the `dev` network can't be accessed from or moved to the `production` network, and vice versa. - -> **Important** -> When you [create a client](#create-a-client), it connects to the XMTP `dev` environment by default. To learn how to use the `env` parameter to set your client's network environment, see [Configure the client](#configure-the-client). - -The `env` parameter accepts one of three valid values: `dev`, `production`, or `local`. Here are some best practices for when to use each environment: - -- `dev`: Use to have a client communicate with the `dev` network. As a best practice, set `env` to `dev` while developing and testing your app. Follow this best practice to isolate test messages to `dev` inboxes. - -- `production`: Use to have a client communicate with the `production` network. As a best practice, set `env` to `production` when your app is serving real users. Follow this best practice to isolate messages between real-world users to `production` inboxes. - -- `local`: Use to have a client communicate with an XMTP node you are running locally. For example, an XMTP node developer can set `env` to `local` to generate client traffic to test a node running locally. - -The `production` network is configured to store messages indefinitely. XMTP may occasionally delete messages and keys from the `dev` network, and will provide advance notice in the [XMTP Discord community](https://discord.gg/xmtp). - -## Enabling group chat - -Coming soon... \ No newline at end of file