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* [[link-infura]] provides a third-party service for connecting to
* various blockchains over JSON-RPC.
*
* **Supported Networks**
*
* - Ethereum Mainnet (``mainnet``)
* - Goerli Testnet (``goerli``)
* - Sepolia Testnet (``sepolia``)
* - Arbitrum (``arbitrum``)
* - Arbitrum Goerli Testnet (``arbitrum-goerli``)
* - Arbitrum Sepolia Testnet (``arbitrum-sepolia``)
* - Base (``base``)
* - Base Goerlia Testnet (``base-goerli``)
* - Base Sepolia Testnet (``base-sepolia``)
* - BNB Smart Chain Mainnet (``bnb``)
* - BNB Smart Chain Testnet (``bnbt``)
* - Linea (``linea``)
* - Linea Goerli Testnet (``linea-goerli``)
* - Linea Sepolia Testnet (``linea-sepolia``)
* - Optimism (``optimism``)
* - Optimism Goerli Testnet (``optimism-goerli``)
* - Optimism Sepolia Testnet (``optimism-sepolia``)
* - Polygon (``matic``)
* - Polygon Amoy Testnet (``matic-amoy``)
* - Polygon Mumbai Testnet (``matic-mumbai``)
*
* @_subsection: api/providers/thirdparty:INFURA [providers-infura]
*/
import {
defineProperties, FetchRequest, assert, assertArgument
} from "../utils/index.js";
import { showThrottleMessage } from "./community.js";
import { Network } from "./network.js";
import { JsonRpcProvider } from "./provider-jsonrpc.js";
import { WebSocketProvider } from "./provider-websocket.js";
import type { AbstractProvider } from "./abstract-provider.js";
import type { CommunityResourcable } from "./community.js";
import type { Networkish } from "./network.js";
const defaultProjectId = "84842078b09946638c03157f83405213";
function getHost(name: string): string {
switch(name) {
case "mainnet":
return "mainnet.infura.io";
case "goerli":
return "goerli.infura.io";
case "sepolia":
return "sepolia.infura.io";
case "arbitrum":
return "arbitrum-mainnet.infura.io";
case "arbitrum-goerli":
return "arbitrum-goerli.infura.io";
case "arbitrum-sepolia":
return "arbitrum-sepolia.infura.io";
case "base":
return "base-mainnet.infura.io";
case "base-goerlia": // @TODO: Remove this typo in the future!
case "base-goerli":
return "base-goerli.infura.io";
case "base-sepolia":
return "base-sepolia.infura.io";
case "bnb":
return "bsc-mainnet.infura.io";
case "bnbt":
return "bsc-testnet.infura.io";
case "linea":
return "linea-mainnet.infura.io";
case "linea-goerli":
return "linea-goerli.infura.io";
case "linea-sepolia":
return "linea-sepolia.infura.io";
case "matic":
return "polygon-mainnet.infura.io";
case "matic-amoy":
return "polygon-amoy.infura.io";
case "matic-mumbai":
return "polygon-mumbai.infura.io";
case "optimism":
return "optimism-mainnet.infura.io";
case "optimism-goerli":
return "optimism-goerli.infura.io";
case "optimism-sepolia":
return "optimism-sepolia.infura.io";
}
assertArgument(false, "unsupported network", "network", name);
}
/**
* The **InfuraWebSocketProvider** connects to the [[link-infura]]
* WebSocket end-points.
*
* By default, a highly-throttled API key is used, which is
* appropriate for quick prototypes and simple scripts. To
* gain access to an increased rate-limit, it is highly
* recommended to [sign up here](link-infura-signup).
*/
export class InfuraWebSocketProvider extends WebSocketProvider implements CommunityResourcable {
/**
* The Project ID for the INFURA connection.
*/
readonly projectId!: string;
/**
* The Project Secret.
*
* If null, no authenticated requests are made. This should not
* be used outside of private contexts.
*/
readonly projectSecret!: null | string;
/**
* Creates a new **InfuraWebSocketProvider**.
*/
constructor(network?: Networkish, projectId?: string) {
const provider = new InfuraProvider(network, projectId);
const req = provider._getConnection();
assert(!req.credentials, "INFURA WebSocket project secrets unsupported",
"UNSUPPORTED_OPERATION", { operation: "InfuraProvider.getWebSocketProvider()" });
const url = req.url.replace(/^http/i, "ws").replace("/v3/", "/ws/v3/");
super(url, provider._network);
defineProperties<InfuraWebSocketProvider>(this, {
projectId: provider.projectId,
projectSecret: provider.projectSecret
});
}
isCommunityResource(): boolean {
return (this.projectId === defaultProjectId);
}
}
/**
* The **InfuraProvider** connects to the [[link-infura]]
* JSON-RPC end-points.
*
* By default, a highly-throttled API key is used, which is
* appropriate for quick prototypes and simple scripts. To
* gain access to an increased rate-limit, it is highly
* recommended to [sign up here](link-infura-signup).
*/
export class InfuraProvider extends JsonRpcProvider implements CommunityResourcable {
/**
* The Project ID for the INFURA connection.
*/
readonly projectId!: string;
/**
* The Project Secret.
*
* If null, no authenticated requests are made. This should not
* be used outside of private contexts.
*/
readonly projectSecret!: null | string;
/**
* Creates a new **InfuraProvider**.
*/
constructor(_network?: Networkish, projectId?: null | string, projectSecret?: null | string) {
if (_network == null) { _network = "mainnet"; }
const network = Network.from(_network);
if (projectId == null) { projectId = defaultProjectId; }
if (projectSecret == null) { projectSecret = null; }
const request = InfuraProvider.getRequest(network, projectId, projectSecret);
super(request, network, { staticNetwork: network });
defineProperties<InfuraProvider>(this, { projectId, projectSecret });
}
_getProvider(chainId: number): AbstractProvider {
try {
return new InfuraProvider(chainId, this.projectId, this.projectSecret);
} catch (error) { }
return super._getProvider(chainId);
}
isCommunityResource(): boolean {
return (this.projectId === defaultProjectId);
}
/**
* Creates a new **InfuraWebSocketProvider**.
*/
static getWebSocketProvider(network?: Networkish, projectId?: string): InfuraWebSocketProvider {
return new InfuraWebSocketProvider(network, projectId);
}
/**
* Returns a prepared request for connecting to %%network%%
* with %%projectId%% and %%projectSecret%%.
*/
static getRequest(network: Network, projectId?: null | string, projectSecret?: null | string): FetchRequest {
if (projectId == null) { projectId = defaultProjectId; }
if (projectSecret == null) { projectSecret = null; }
const request = new FetchRequest(`https:/\/${ getHost(network.name) }/v3/${ projectId }`);
request.allowGzip = true;
if (projectSecret) { request.setCredentials("", projectSecret); }
if (projectId === defaultProjectId) {
request.retryFunc = async (request, response, attempt) => {
showThrottleMessage("InfuraProvider");
return true;
};
}
return request;
}
}
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