65 lines
1.2 KiB
Promela
65 lines
1.2 KiB
Promela
# FROM: https://github.com/w3c/webpayments/tree/gh-pages/PaymentFlows
|
|
|
|
@startuml
|
|
autonumber
|
|
|
|
Participant "Payee (Merchant) Site" as Payee
|
|
Actor "Payer (Shopper) Browser" as Payer
|
|
participant "Payer (Shopper) PSP (PayPal)" as CPSP
|
|
|
|
note over MPSP, CPSP: HTTPS
|
|
|
|
title PayPal Payment (REST API) (Current)
|
|
|
|
Payee->Payer: Present Checkout Page with Pay Button
|
|
|
|
Payer->Payer: Select PayPal Payment Method
|
|
|
|
Payer-\Payee: Payment Page Request
|
|
|
|
Payee<->CPSP: Create Payment
|
|
|
|
Payee-/Payer: HTTP Redirect
|
|
|
|
Note right: HTTP Direct now send the shopper to the PayPal site
|
|
|
|
Payer-\CPSP: Payment Initiation
|
|
|
|
CPSP-/Payer: Authentication Page
|
|
|
|
Payer-\CPSP: Authenticate
|
|
note right: Typically a username & password
|
|
|
|
CPSP-/Payer: Payment Page
|
|
|
|
opt
|
|
Payer<->CPSP: Instrument Choice
|
|
note right: Payer can change from default payment instrument
|
|
end
|
|
|
|
Payer->Payer: Approval
|
|
|
|
Payer-\CPSP: Payment Approval
|
|
|
|
CPSP-/Payer: Payment Response Redirect
|
|
|
|
Payer-\Payee: Payment Response
|
|
|
|
Payee<->CPSP: Execute Payment
|
|
|
|
Payee-/Payer: Result Page
|
|
|
|
|
|
... asynchronous notification ...
|
|
|
|
CPSP->Payer: Payment Notification (email)
|
|
|
|
Opt
|
|
Payee->Payer: Payment Notification (email)
|
|
End
|
|
|
|
Note right: Provides out of band confirmation to protect against failure/modification at browser
|
|
|
|
|
|
@enduml
|