Async sign and send raw middleware

docs/middleware.rst

@@ -537,6 +537,7 @@ Signing
 ~~~~~~~
 
 .. py:method:: web3.middleware.construct_sign_and_send_raw_middleware(private_key_or_account)
+               web3.middleware.async_construct_sign_and_send_raw_middleware(private_key_or_account)
 
 This middleware automatically captures transactions, signs them, and sends them as raw transactions.
 The ``from`` field on the transaction, or ``w3.eth.default_account`` must be set to the address of the private key for
@@ -573,6 +574,27 @@ this middleware to have any effect.
     >>> w3.middleware_onion.add(construct_sign_and_send_raw_middleware(acct))
     >>> w3.eth.default_account = acct.address
 
+    >>> # use `eth_sendTransaction` to automatically sign and send the raw transaction
+    >>> w3.eth.send_transaction(tx_dict)
+    HexBytes('0x09511acf75918fd03de58141d2fd409af4fd6d3dce48eb3aa1656c8f3c2c5c21')
+
+Similarly, with AsyncWeb3:
+
+.. code-block:: python
+
+    >>> from web3 import AsyncWeb3
+    >>> async_w3 = AsyncWeb3(AsyncHTTPProvider('HTTP_ENDPOINT'))
+    >>> from web3.middleware import async_construct_sign_and_send_raw_middleware
+    >>> from eth_account import Account
+    >>> import os
+    >>> acct = async_w3.eth.account.from_key(os.environ.get('PRIVATE_KEY'))
+    >>> async_w3.middleware_onion.add(await async_construct_sign_and_send_raw_middleware(acct))
+    >>> async_w3.eth.default_account = acct.address
+
+    >>> # use `eth_sendTransaction` to automatically sign and send the raw transaction
+    >>> await async_w3.eth.send_transaction(tx_dict)
+    HexBytes('0x09511acf75918fd03de58141d2fd409af4fd6d3dce48eb3aa1656c8f3c2c5c21')
+
 Now you can send a transaction from acct.address without having to build and sign each raw transaction.
 
 When making use of this signing middleware, when sending dynamic fee transactions (recommended over legacy transactions),

newsfragments/2936.bugfix.rst

@@ -0,0 +1 @@
+Fix for a possible bug in ``construct_sign_and_send_raw_middleware`` where the signed transaction was sent as bytes and expected to be converted to hex by formatting later on. It is now explicitly sent as the hex string hash within the middleware.

newsfragments/3025.feature.rst

@@ -0,0 +1 @@
+Add async support for the sign-and-send raw transaction middleware via ``construct_async_sign_and_send_raw_middleware()``.