refactor: roll out Netw0rk::connect

Author: Devdutt Shenoi

rumqttc/src/v5/eventloop.rs

@@ -130,7 +130,7 @@ impl EventLoop {
 
         requests_in_channel.retain(|request| {
             match request {
-                Request::PubAck(_) => false,  // Wait for publish retransmission, else the broker could be confused by an unexpected ack
+                Request::PubAck(_) => false, // Wait for publish retransmission, else the broker could be confused by an unexpected ack
                 _ => true,
             }
         });
@@ -398,20 +398,20 @@ async fn mqtt_connect(
     options: &mut MqttOptions,
     network: &mut Network,
 ) -> Result<ConnAck, ConnectionError> {
-    let keep_alive = options.keep_alive().as_secs() as u16;
-    let clean_start = options.clean_start();
-    let client_id = options.client_id();
-    let properties = options.connect_properties();
-
-    let connect = Connect {
-        keep_alive,
-        client_id,
-        clean_start,
-        properties,
-    };
+    let packet = Packet::Connect(
+        Connect {
+            client_id: options.client_id(),
+            keep_alive: options.keep_alive().as_secs() as u16,
+            clean_start: options.clean_start(),
+            properties: options.connect_properties(),
+        },
+        options.last_will(),
+        options.credentials(),
+    );
 
     // send mqtt connect packet
-    network.connect(connect, options).await?;
+    network.write(packet).await?;
+    network.flush().await?;
 
     // validate connack
     match network.read().await? {

rumqttc/src/v5/framed.rs

@@ -5,8 +5,7 @@ use tokio_util::codec::Framed;
 use crate::framed::AsyncReadWrite;
 
 use super::mqttbytes::v5::Packet;
-use super::{mqttbytes, Codec, Connect, MqttOptions, MqttState};
-use super::{Incoming, StateError};
+use super::{mqttbytes, Codec, Incoming, MqttState, StateError};
 
 /// Network transforms packets <-> frames efficiently. It takes
 /// advantage of pre-allocation, buffering and vectorization when
@@ -86,19 +85,6 @@ impl Network {
             .map_err(StateError::Deserialization)
     }
 
-    pub async fn connect(
-        &mut self,
-        connect: Connect,
-        options: &MqttOptions,
-    ) -> Result<(), StateError> {
-        let last_will = options.last_will();
-        let login = options.credentials();
-        self.write(Packet::Connect(connect, last_will, login))
-            .await?;
-
-        self.flush().await
-    }
-
     pub async fn flush(&mut self) -> Result<(), StateError> {
         self.framed
             .flush()