Binary file handling

filesystem.py

@@ -124,7 +124,21 @@ class HttpResponse(AccessDict):
             return self.body.write(bytes(stuff, "utf-8"))
         return self.body.write(stuff)
 
-    # Foreshadowing (n): A literary device in which an author ...
+    def binary_io(self):
+        if not self.binmode:
+            str(self)
+        hbuf = StringIO()
+        bbuf = BytesIO()
+        hbuf.write(f"HTTP/1.1 {self.status}" + CRLF)
+        length = len(self["body"].getvalue())
+        for k, v in self["headers"].items():
+            hbuf.write(f"{k}: {v}\r\n")
+        if "Content-Length" not in self["headers"]:
+            hbuf.write(f"Content-Length: {length}\r\n")
+        hbuf.write(CRLF)  # Per RFC 9112
+        bbuf.write(self.body.getvalue())
+        return (hbuf.getvalue(), bbuf.getvalue())
+
     def __str__(self):
         buf = StringIO()
         buf.write(f"HTTP/1.1 {self.status}" + CRLF)
@@ -440,8 +454,13 @@ def client_handler(sock):
             continue
 
     # gevent.sleep(0.25)  # this is a somewhat magical value, see Part II
-    default = str(server_response) + CRLF
+    if server_response.binmode:
-    sock.send(default.encode("utf-8"))
+        headers, body = server_response.binary_io()
+        sock.send(headers.encode("utf-8"))
+        sock.send(body)
+    else:
+        default = str(server_response) + CRLF
+        sock.send(default.encode("utf-8"))
     # sock.shutdown(socket.SHUT_RDWR)  # we do a more graceful exit here by
     # shutting down the socket, makes things faster for TLS
     # may have an effect on client response time to but i didn't notice it.

htdocs/index.html

@@ -9,6 +9,7 @@
         <main>
             <h1>Page title</h1>
 
+            <img src="rick.jpg"> No Strangers </img>
             <p>Hello! this is an example page using <a href="https://github.com/Xe/Xess">Xess</a></p>
             
             <blockquote>When in doubt, create another framework</blockquote>