# External API Handshaking Pipelines

To connect isolated phone lines with corporate platforms, **Asterisk 2** dispatches dynamic **Outbound Webhook Requests**. The runtime pairs graphical layout blocks with network REST clients to read JSON payloads automatically during live call switching flows.

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## Remote API Handshake Integration Map

The layout below traces how runtime pointer actions send network queries to verify remote application parameters:

```mermaid
graph TD
    %% Canvas Node
    subgraph FlowEngine["AppFlow Runtime Context"]
        NodeApi["ApiRequest UI Block<br/>(Method: POST, URL: '/api/verify')"]
    end

    %% Network Adapter
    subgraph OutboundAdapter["C# WebRequest Layer"]
        HttpSend["HttpClient Pool Adapter<br/>(Injects Auth Header strings)"]
    end

    %% External Domain
    subgraph TargetSystem["External Microservice"]
        ServerEndpoint["Remote Platform Restful Target<br/>(Returns Status JSON)"]
    end

    %% Storage Node
    subgraph ResultStore["Session Context Memory"]
        StoreVar["Session Cache Memory<br/>(Stores Parsed Property Key)"]
    end

    %% Links
    NodeApi ==>|"Extract Target Arguments"| HttpSend
    HttpSend <==>|"Execute Remote Query"| ServerEndpoint
    HttpSend ==>|"Deserialize Response JSON"| StoreVar

    %% High-Fidelity Theming Array
    classDef flowToken fill:#0f172a,stroke:#38bdf8,stroke-width:2px,color:#fff,rx:6px,ry:6px;
    classDef netToken fill:#312e81,stroke:#ec4899,stroke-width:2px,color:#fff,rx:6px,ry:6px;
    classDef targetToken fill:#1e293b,stroke:#a855f7,stroke-width:2px,color:#fff,rx:6px,ry:6px;
    classDef storeToken fill:#065f46,stroke:#10b981,stroke-width:2px,color:#fff,rx:6px,ry:6px;

    class FlowEngine,NodeApi flowToken;
    class OutboundAdapter,HttpSend netToken;
    class TargetSystem,ServerEndpoint targetToken;
    class ResultStore,StoreVar storeToken;
```

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## Outbound direct properties

### 1. Reusable Socket Pool Management
To sustain high network performance during simultaneous outbound calls, API handlers completely avoid single socket allocations. Network clients execute across static thread pools (`IHttpClientFactory`), reusing existing connection paths cleanly.

### 2. High-Speed API Authorization
Outbound requests targeting protected microservice segments append encrypted authentication signatures (`Bearer`) directly inside standard network header frames automatically.