micropython/uaiohttpclient: Add ssl support.

Carglglz · Carglglz · commit eef5c29dfd2c · 2023-10-17T22:02:20.000+01:00
Add ssl support and SSLContext support with ClientSession

Signed-off-by: Carlos Gil &lt;carlosgilglez@gmail.com&gt;
diff --git a/micropython/uaiohttpclient/clientsession_example.py b/micropython/uaiohttpclient/clientsession_example.py
@@ -0,0 +1,17 @@
+import uaiohttpclient as aiohttp
+import asyncio
+
+
+async def fetch(client):
+    async with client.get("http://micropython.org") as resp:
+        assert resp.status == 200
+        return await resp.text()
+
+
+async def main():
+    async with aiohttp.ClientSession() as client:
+        html = await fetch(client)
+        print(html)
+
+
+asyncio.run(main())
diff --git a/micropython/uaiohttpclient/uaiohttpclient.py b/micropython/uaiohttpclient/uaiohttpclient.py
@@ -8,6 +8,9 @@ def __init__(self, reader):
     def read(self, sz=-1):
         return (yield from self.content.read(sz))
 
+    def text(self, sz=-1):
+        return self.read(sz=sz)
+
     def __repr__(self):
         return "<ClientResponse %d %s>" % (self.status, self.headers)
 
@@ -40,15 +43,128 @@ def __repr__(self):
         return "<ChunkedClientResponse %d %s>" % (self.status, self.headers)
 
 
+class _RequestContextManager:
+    def __init__(self, client, request_co):
+        self.reqco = request_co
+        self.client = client
+
+    async def __aenter__(self):
+        return await self.reqco
+
+    async def __aexit__(self, *args):
+        await self.client._reader.aclose()
+        return await asyncio.sleep(0)
+
+
+class ClientSession:
+    def __init__(self):
+        self._reader = None
+
+    async def __aenter__(self):
+        return self
+
+    async def __aexit__(self, *args):
+        await self._reader.aclose()
+        return await asyncio.sleep(0)
+
+    def request(self, method, url, ssl=None):
+        return _RequestContextManager(self, self._request(method, url, ssl=ssl))
+
+    async def _request(self, method, url, ssl=None):
+        redir_cnt = 0
+        redir_url = None
+        while redir_cnt < 2:
+            reader = yield from self.request_raw(method, url, ssl)
+            headers = []
+            sline = yield from reader.readline()
+            sline = sline.split(None, 2)
+            status = int(sline[1])
+            chunked = False
+            while True:
+                line = yield from reader.readline()
+                if not line or line == b"\r\n":
+                    break
+                headers.append(line)
+                if line.startswith(b"Transfer-Encoding:"):
+                    if b"chunked" in line:
+                        chunked = True
+                elif line.startswith(b"Location:"):
+                    url = line.rstrip().split(None, 1)[1].decode("latin-1")
+
+            if 301 <= status <= 303:
+                redir_cnt += 1
+                yield from reader.aclose()
+                continue
+            break
+
+        if chunked:
+            resp = ChunkedClientResponse(reader)
+        else:
+            resp = ClientResponse(reader)
+        resp.status = status
+        resp.headers = headers
+        self._reader = reader
+        return resp
+
+    async def request_raw(self, method, url, ssl=None):
+        try:
+            proto, dummy, host, path = url.split("/", 3)
+        except ValueError:
+            proto, dummy, host = url.split("/", 2)
+            path = ""
+
+        if proto == "http:":
+            port = 80
+        elif proto == "https:":
+            port = 443
+            if ssl is None:
+                ssl = True
+        else:
+            raise ValueError("Unsupported protocol: " + proto)
+
+        if ":" in host:
+            host, port = host.split(":", 1)
+            port = int(port)
+
+        reader, writer = yield from asyncio.open_connection(host, port, ssl=ssl)
+        # Use protocol 1.0, because 1.1 always allows to use chunked transfer-encoding
+        # But explicitly set Connection: close, even though this should be default for 1.0,
+        # because some servers misbehave w/o it.
+        query = (
+            "%s /%s HTTP/1.0\r\nHost: %s\r\nConnection: close\r\nUser-Agent: compat\r\n\r\n"
+            % (
+                method,
+                path,
+                host,
+            )
+        )
+        yield from writer.awrite(query.encode("latin-1"))
+        #    yield from writer.aclose()
+        return reader
+
+    def get(self, url, ssl=None):
+        return _RequestContextManager(self, self._request("GET", url, ssl=ssl))
+
+
 def request_raw(method, url):
     try:
         proto, dummy, host, path = url.split("/", 3)
     except ValueError:
         proto, dummy, host = url.split("/", 2)
         path = ""
-    if proto != "http:":
+
+    if proto == "http:":
+        port = 80
+    elif proto == "https:":
+        port = 443
+    else:
         raise ValueError("Unsupported protocol: " + proto)
-    reader, writer = yield from asyncio.open_connection(host, 80)
+
+    if ":" in host:
+        host, port = host.split(":", 1)
+        port = int(port)
+
+    reader, writer = yield from asyncio.open_connection(host, port, ssl=proto == "https:")
     # Use protocol 1.0, because 1.1 always allows to use chunked transfer-encoding
     # But explicitly set Connection: close, even though this should be default for 1.0,
     # because some servers misbehave w/o it.
