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```mermaid
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sequenceDiagram
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Alice->>DNS Server: (1) Execute DNS Discovery
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DNS Server-->>Alice: (2) Bob's connection details (UDP + TCP)
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activate Alice
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Alice->>Bob: (3) Execute Discv5 over UDP
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Bob-->>Alice: (4) ENRs (UDP + TCP): Carol, David, Erin
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Alice->>Alice: (5) Decode ENRs
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Alice->>Carol: (6) Execute Discv5 over UDP
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Carol-->>Alice: (7) ENRs (UDP + TCP): Frank, Gwen, Harry
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Alice->>Alice: (8) Decode ENRs
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deactivate Alice
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Alice->>Alice: (9) Select peers to dial
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Alice->>David: (10) Libp2p dial (TCP)
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Alice->>Frank: (10) Libp2p dial (TCP)
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Alice->>Gwen: (10) Libp2p dial (TCP)
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```
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1. DNS Discovery protocol is executed.
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2. Alice retrieves Bob's ENR (Ethereum Node Record) from DNS Server.
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3. Alice executes the Discv5 protocol with Bob using UDP connection details from ENR.
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2023-06-06 06:27:17 +00:00
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4. Bob returns Carol's, David's and Erin's ENRs to Alice.
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2023-08-01 19:39:04 +00:00
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5. Alice decodes ENRs and extracts the details of Carol, David, and Erin's TCP and UDP connections.
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6. Alice executes the Discv5 protocol with Carol using UDP connection details from ENR.
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2023-06-06 06:27:17 +00:00
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7. Carol returns Frank's, Gwen's and Harry's ENRs to Alice.
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2023-08-01 19:39:04 +00:00
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8. Alice decodes ENRs and extracts Frank's, Gwen's and Harry's TCP and UDP connection details.
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2023-06-06 06:27:17 +00:00
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9. Alice selects to dial David, Frank and Gwen.
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2023-08-01 19:39:04 +00:00
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10. Alice dials David, Frank and Gwen over libp2p using TCP connection details from ENRs.
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