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An enterprise-grade Java-based, Apache 2.0 licensed Ethereum client https://wiki.hyperledger.org/display/besu
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57 lines
2.4 KiB
57 lines
2.4 KiB
6 years ago
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description: Pantheon Clique Proof-of-Authority (PoA) consensus protocol implementation
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path: blob/master/ethereum/core/src/main/resources/
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source: rinkeby.json
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<!--- END of page meta data -->
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# Testing and Developing Nodes
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## Bootnodes
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Bootnodes are used to initially discover peers.
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### Mainnet and Public Testnets
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For mainnet and Rinkeby, Pantheon predefines a list of enonde URLs. For Ropsten, bootnodes are specified using the [`--bootnodes`](../Reference/Pantheon-CLI-Syntax.md#bootnodes) option.
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### Private Networks
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To start a bootnode for a private network:
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1. Export the public key to a file:
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!!! example
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```bash
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pantheon export-pub-key bootnode
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```
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The node public key is exported to the `bootnode` file.
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2. Start the bootnode, specifying:
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* An empty string for the [`--bootnodes`](../Reference/Pantheon-CLI-Syntax.md#bootnodes) option because this is the bootnode.
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* The network ID for your private network.
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!!! example
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```bash
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pantheon --bootnodes="" --network-id 123
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```
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To specify this bootnode for another node, the enode URL for the `--bootnodes` option is `enode://<id>@<host:port>` where:
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* `<id>` is the node public key written to the specified file (`bootnode` in the above example) excluding the initial 0x.
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* `<host:port>` is the host and port the bootnode is listening on for P2P peer discovery. Specified by the `--p2p-listen` option for the bootnode (default is `127.0.0.1:30303`).
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!!! example
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If the `--p2p-listen` option is not specified and the node public key exported is `0xc35c3ec90a8a51fd5703594c6303382f3ae6b2ecb9589bab2c04b3794f2bc3fc2631dabb0c08af795787a6c004d8f532230ae6e9925cbbefb0b28b79295d615f`
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Then the enode URL is:
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`enode://c35c3ec90a8a51fd5703594c6303382f3ae6b2ecb9589bab2c04b3794f2bc3fc2631dabb0c08af795787a6c004d8f532230ae6e9925cbbefb0b28b79295d615f@127.0.0.1:30303`
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!!! info
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The default host and port for P2P peer discovery is `127.0.0.1:30303`. The `--p2p-listen` option can be used to specify a host and port.
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To start a node specifying the bootnode for P2P discovery:
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!!! example
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```bash
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pantheon --datadir=/tmp/pantheon/30301 --p2p-listen=127.0.0.1:30301 --network-id=123 --bootnodes=enode://c35c3ec90a8a51fd5703594c6303382f3ae6b2ecb99bab2c04b3794f2bc3fc2631dabb0c08af795787a6c004d8f532230ae6e9925cbbefb0b28b79295d615f@127.0.0.1:30303
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```
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