TCP 套接字和 TLS

Deno 部署支援傳出的 TCP 和 TLS 連線。這些 API 讓您可以使用資料庫，例如 PostgreSQL、SQLite、MongoDB 等，搭配部署。

Deno.connect

建立外連 TCP 連線。

函式定義與 Deno 相同，限制為 transport 選項只能為 tcp，且 hostname 不能為 localhost 或空值。

function Deno.connect(options: ConnectOptions): Promise<Conn>

範例

async function handler(_req) {
  // Make a TCP connection to example.com
  const connection = await Deno.connect({
    port: 80,
    hostname: "example.com",
  });

  // Send raw HTTP GET request.
  const request = new TextEncoder().encode(
    "GET / HTTP/1.1\nHost: example.com\r\n\r\n",
  );
  const _bytesWritten = await connection.write(request);

  // Read 15 bytes from the connection.
  const buffer = new Uint8Array(15);
  await connection.read(buffer);
  connection.close();

  // Return the bytes as plain text.
  return new Response(buffer, {
    headers: {
      "content-type": "text/plain;charset=utf-8",
    },
  });
}

Deno.serve(handler);

Deno.connectTls

建立外連 TLS 連線。

函式定義與 Deno 相同，限制為 hostname 不能為 localhost 或空值。

function Deno.connectTls(options: ConnectTlsOptions): Promise<Conn>

範例

async function handler(_req) {
  // Make a TLS connection to example.com
  const connection = await Deno.connectTls({
    port: 443,
    hostname: "example.com",
  });

  // Send raw HTTP GET request.
  const request = new TextEncoder().encode(
    "GET / HTTP/1.1\nHost: example.com\r\n\r\n",
  );
  const _bytesWritten = await connection.write(request);

  // Read 15 bytes from the connection.
  const buffer = new Uint8Array(15);
  await connection.read(buffer);
  connection.close();

  // Return the bytes as plain text.
  return new Response(buffer, {
    headers: {
      "content-type": "text/plain;charset=utf-8",
    },
  });
}

Deno.serve(handler);