@startuml
skinparam dpi 300
skinparam classFontSize 8
skinparam classFontName Helvetica
autonumber

box "Application" #LightGreen
    participant "Application" as application
end box

box "Libraries" #LightBlue
    participant "HTTP Client" as http
end box

box "HTTP Server" #Yellow
    participant "HTTP Server" as server
end box

activate application
loop until session established or all attempts exhausted
application -> server : Establish TLS session (client verifies server's certificate)
server -> application : Session established (no client authentication)
end

application -> application: Set request info parameters
application -> http: Initialize request headers (HTTPClient_InitializeRequestHeaders)
activate http
http -> application : Write request headers to user-provided buffer
deactivate http

application -> http: Send HTTP GET request (HTTPClient_Send)
activate http
http -> server: Send payload of request through transport interface
http -> application : Write response to user-provided buffer
application -> application: Log response from contents of buffer
deactivate http

application -> http: Send HTTP HEAD request (HTTPClient_Send)
activate http
http -> server: Send payload of request through transport interface
http -> application : Write response to user-provided buffer
application -> application: Log response from contents of buffer
deactivate http

application -> http: Send HTTP PUT request (HTTPClient_Send)
activate http
http -> server: Send payload of request through transport interface
http -> application : Write response to user-provided buffer
application -> application: Log response from contents of buffer
deactivate http

application -> http: Send HTTP POST request (HTTPClient_Send)
activate http
http -> server: Send payload of request through transport interface
http -> application : Write response to user-provided buffer
application -> application: Log response from contents of buffer
deactivate http

application -> server: End TLS session and disconnect from server

deactivate application

@enduml