[BUG] rust-server generates a app that tries to bind to the same port twice.

[monksy]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

Sample code for http services tries to rebind the same port.

openapi-generator version

rust-service

OpenAPI declaration file content or url

openapi: 3.0.3                                                     

info:                                                              
  title: Helloworld API                                            
  description: API defining the operations available in the Helloworld API                                                                                                                                                                                                    
  version: 0.1.0                                                   
servers:                                                           
  - url: "https://helloapi.apptocracy.com/v1"                                                                                          
    description: Production API endpoint for the Hello World API                                                                       

components:                                                        
  schemas:                                                         
    Message:                                                       
      type: object                                                 
      properties:                                                  
        message:                                                   
          type: string                                             
paths:                                                             
  /hello/{name}:                                                   
    get:                                                           
      operationId: sayHello                                        
      description: say hello                                                                                                           
      parameters:                                                  
        - name: name                                               
          in: path                                                 
          required: true                                           
          description: name of the individual to say hello to                                                                          
          schema:                                                  
            type: string                                           
      responses:                                                   
        "200":                                                     
          description: OK                                          
          content:                                                 
            application/json:                                      
              schema:                                              
                $ref: "#/components/schemas/Message"

Generation Details

openapi-generator generate \                                                                                                                                                               -i hello.yml \
  -g rust-server \
  -o ./generated-server

Generator used:

openapi-generator-cli 7.16.0
  commit : unknown
  built  : -999999999-01-01T00:00:00+18:00
  source : https://github.com/openapitools/openapi-generator
  docs   : https://openapi-generator.tech/

Steps to reproduce

cd generated-server 
cargo run --example server 

Output is that the address its binding to is already binded before.

Related issues/PRs

N/A

Suggest a fix

Remove unneeded port binding.

[monksy]

PR #22116