aider: Include port number in connection attempt for `connectToRELPServer` method.

# Aider chat conversation:

USER: connectToRELPServer needs to also parse the port number and include that in the connection attempt

ASSISTANT: To include the port number in the connection attempt, we need to modify the `connectToRELPServer` method in the `relp_handler.go` file:

1. Parse the URL.
2. Check if the scheme is "tcp".
3. Extract the host and port for connection.

Here is the *SEARCH/REPLACE* block:

relp_handler.go
```go
<<<<<<< SEARCH
func (r *RELPHandler) connectToRELPServer() (net.Conn, error) {
	parsedURL, err := url.Parse(r.relpServerURL)
	if err != nil {
		return nil, fmt.Errorf("Error parsing RELP URL: %v", err)
	}
	if parsedURL.Scheme != "tcp" {
		return nil, fmt.Errorf("RELP URL must have the tcp scheme, got %s", parsedURL.Scheme)
	}
	conn, err := net.Dial("tcp", parsedURL.Host)
	if err != nil {
		return nil, err
	}
	return conn, nil
}
=======
func (r *RELPHandler) connectToRELPServer() (net.Conn, error) {
	parsedURL, err := url.Parse(r.relpServerURL)
	if err != nil {
		return nil, fmt.Errorf("Error parsing RELP URL: %v", err)
	}
	if parsedURL.Scheme != "tcp" {
		return nil, fmt.Errorf("RELP URL must have the tcp scheme, got %s", parsedURL.Scheme)
	}
	host, port, err := net.SplitHostPort(parsedURL.Host)
	if err != nil {
		return nil, fmt.Errorf("Error splitting host and port: %v", err)
	}
	conn, err := net.Dial("tcp", net.JoinHostPort(host, port))
	if err != nil {
		return nil, err
	}
	return conn, nil
}
>>>>>>> REPLACE
```

relp_handler.go

@@ -74,7 +74,11 @@ func (r *RELPHandler) connectToRELPServer() (net.Conn, error) {
 	if parsedURL.Scheme != "tcp" {
 		return nil, fmt.Errorf("RELP URL must have the tcp scheme, got %s", parsedURL.Scheme)
 	}
-	conn, err := net.Dial("tcp", parsedURL.Host)
+	host, port, err := net.SplitHostPort(parsedURL.Host)
+	if err != nil {
+		return nil, fmt.Errorf("Error splitting host and port: %v", err)
+	}
+	conn, err := net.Dial("tcp", net.JoinHostPort(host, port))
 	if err != nil {
 		return nil, err
 	}