使用Apollo Client同时配置WebSocket、身份验证、HTTP和上传Link。

示例代码：

import { ApolloClient } from 'apollo-client';
import { split } from 'apollo-link';
import { WebSocketLink } from 'apollo-link-ws';
import { HttpLink } from 'apollo-link-http';
import { setContext } from 'apollo-link-context';
import { createUploadLink } from 'apollo-upload-client';
import { getMainDefinition } from 'apollo-utilities';

const wsLink = new WebSocketLink({
  uri: `ws://localhost:4000/graphql`,
  options: {
    reconnect: true
  }
});

const httpLink = new HttpLink({
  uri: '/graphql',
  credentials: 'same-origin'
});

const authLink = setContext((_, { headers }) => {
  const token = localStorage.getItem('token');
  return {
    headers: {
      ...headers,
      authorization: token ? `Bearer ${token}` : ''
    }
  };
});

const uploadLink = createUploadLink({
  uri: '/graphql',
  credentials: 'same-origin'
});

const link = split(
  ({ query }) => {
    const { kind, operation } = getMainDefinition(query);
    return kind === 'OperationDefinition' && operation === 'subscription';
  },
  wsLink,
  authLink.concat(uploadLink).concat(httpLink)
);

const client = new ApolloClient({
  link,
  cache: new InMemoryCache()
});

以上代码中，WebSocket、HTTP和上传Link分别通过WebSocketLink、HttpLink和createUploadLink创建。身份验证Link则使用setContext设置请求头。最后使用split函数将WebSocket和非WebSocket请求分别处理。