README.md

@@ -199,7 +199,7 @@ Add to your `Project.toml`:
 msghandler = "path-to-msghandler"
 ```
 
-#### Send Messages
+#### Send Messages (Publish - Subscribe Pattern)
 
 ```julia
 using msghandler
@@ -229,7 +229,7 @@ NATS.drain(conn)
 reply = NATS.request(conn, "test.topic", envelope_json_str, timeout=10)
 ```
 
-#### Receive Messages
+#### Receive Messages (Publish - Subscribe Pattern)
 
 ```julia
 using msghandler, NATS
@@ -250,6 +250,51 @@ NATS.subscribe(conn, "test.topic") do msg
 end
 ```
 
+#### OR
+#### Send Messages (Request - Reply Pattern)
+
+```julia
+using msghandler
+
+# Data format: [(dataname, data, type), ...]
+payload_1 = ("test_message", "Hello World", "text")
+file_path_large_image = "./test/large_image.png"
+file_data_large_image = read(file_path_large_image)
+filename_large_image = basename(file_path_large_image)
+payload_2 = (filename_large_image, file_data_large_image, "binary")
+
+payloads = [payload_1, payload_2]  # List of tuples
+
+# Step 1: Create the message envelope (transport-agnostic)
+envelope, envelope_json_str = msghandler.smartpack("test.topic", 
+                                                  payloads; 
+                                                  broker_url="nats.yiem.cc",
+                                                  fileserver_url="http://192.168.88.104:8080")
+
+# Step 2: Send via your chosen transport (NATS in this example)
+using NATS
+conn = NATS.connect("nats.yiem.cc")
+reply = NATS.request(conn, "test.topic", envelope_json_str, timeout=10)
+```
+
+#### Receive Messages (Request - Reply Pattern)
+
+```julia
+using msghandler, NATS
+
+conn = NATS.connect("nats.yiem.cc")
+sub1 = NATS.reply(conn, "nats.yiem.cc"; queue_group="group1", spawn=true) do msg
+                  envelope_json_str = String(msg.payload)
+                  envelope = msghandler.smartunpack(envelope_json_str)
+                  response = [("respond_message", "msg received", "text")]
+                  _, envelope_json_str = msghandler.smartpack("requester inbox", 
+                                                  response; 
+                                                  broker_url="nats.yiem.cc",
+                                                  fileserver_url="http://192.168.88.104:8080")
+                  return envelope_json_str
+              end
+```
+
 ### JavaScript CSR Webapp
 
 #### Installation