feat: enable custom providers headers option

src/provider/rpc.ts

@@ -38,6 +38,7 @@ import { Block, BlockIdentifier } from './utils';
 export type RpcProviderOptions = {
  nodeUrl: string;
  retries?: number;
+ headers?: object;
 };
 
 export class RpcProvider implements ProviderInterface {
@@ -46,14 +47,17 @@ export class RpcProvider implements ProviderInterface {
  // from interface
  public chainId!: StarknetChainId;
 
+ public headers: object;
+
  private responseParser = new RPCResponseParser();
 
  private retries: number;
 
  constructor(optionsOrProvider: RpcProviderOptions) {
- const { nodeUrl, retries } = optionsOrProvider;
+ const { nodeUrl, retries, headers } = optionsOrProvider;
  this.nodeUrl = nodeUrl;
  this.retries = retries || 200;
+ this.headers = { 'Content-Type': 'application/json', ...headers };
 
  this.getChainId().then((chainId) => {
  this.chainId = chainId;
@@ -64,7 +68,7 @@ export class RpcProvider implements ProviderInterface {
  return fetch(this.nodeUrl, {
  method: 'POST',
  body: stringify({ method, jsonrpc: '2.0', params, id: 0 }),
- headers: { 'Content-Type': 'application/json' },
+ headers: this.headers,
  });
  }
 

src/provider/sequencer.ts

@@ -62,6 +62,7 @@ export type SequencerProviderOptions =
  feederGatewayUrl?: string;
  gatewayUrl?: string;
  chainId?: StarknetChainId;
+ headers?: object;
  };
 
 export class SequencerProvider implements ProviderInterface {
@@ -73,6 +74,8 @@ export class SequencerProvider implements ProviderInterface {
 
  public chainId: StarknetChainId;
 
+ public headers: object | undefined;
+
  private responseParser = new SequencerAPIResponseParser();
 
  constructor(optionsOrProvider: SequencerProviderOptions = { network: 'goerli-alpha' }) {
@@ -93,6 +96,8 @@ export class SequencerProvider implements ProviderInterface {
  this.chainId =
  optionsOrProvider.chainId ??
  SequencerProvider.getChainIdFromBaseUrl(optionsOrProvider.baseUrl);
+
+ this.headers = optionsOrProvider?.headers;
  }
  }
 
@@ -153,13 +158,14 @@ export class SequencerProvider implements ProviderInterface {
  return `?${queryString}`;
  }
 
- private getHeaders(method: 'POST' | 'GET'): Record<string, string> | undefined {
+ private getHeaders(method: 'POST' | 'GET'): object | undefined {
  if (method === 'POST') {
  return {
  'Content-Type': 'application/json',
+ ...this.headers,
  };
  }
- return undefined;
+ return this.headers;
  }
 
  // typesafe fetch