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钱包充值处理

用户钱包可以分配一个或者多个独立随机私钥对应生成的地址，也可是使用HD的方式从助记词生成的主私钥（主公钥）来按照一定的推导序列来生成对应的用户地址，用户充值时，需要对用户地址相关的交易进行订阅，订阅的方式可以是分析所有新区块/新交易来检查是否有用户地址相关的数据。

钱包服务需要接收到当前Bitcoindiamond网络产生的所有新区块和新交易，对新交易或者区块中的交易进行分析交易输出，解析出交易输出脚本对应的地址是否和钱包中的地址匹配，对匹配的地址记录本交易输出中的数值进行充值，当充值交易的确认数超过6-10个确认之后，可以认为钱包中此地址充值成功。

接收区块链网络中的所有新区块和新交易可以考虑两种方式：一种是使用 P2P 的方式与Bitcoindiamond 节点互联，新的交易和区块都会通过P2P的消息进行传递；还有一种是通过 ZeroMQ（ØMQ、zmq）的方式，编写zmq客户端订阅Bitcoindiamond节点的推送数据。

推荐使用zmq的方式，本文档以zmq的方式解释说明新区块与新交易的解析。

ØMQ订阅交易和区块

在节点配置文件 bitcoin.conf 中开启zmq推送服务

# 启用 ZMQ 
zmqpubhashblock=tcp://127.0.0.1:58333
zmqpubhashtx=tcp://127.0.0.1:58333
zmqpubrawblock=tcp://127.0.0.1:58333
zmqpubrawtx=tcp://127.0.0.1:58333

编写zmq客户端，在上述配置端口进行订阅 topic： “hashblock”、“hashtx”、“rawblock”、“rawtx”。

ØMQ消息

有新交易或新区块时，zmq客户端会收到相应推送，接收到的二进制消息分为3部分

sequence + topic + body

  • sequence 整形序号

  • topic 即上面订阅的 “hashblock”、“hashtx”、“rawblock”、“rawtx”

  • body 即相应数据

    • hashblock 对应区块 Hash
    • hashtx 对应交易 Hash
    • rawblock 对应原始区块数据
    • rawtx 对应原始交易数据

解析区块

RPC解析

接收到hashblock数据之后，可以通过 Bitcoindiamond 节点的 RPC 命令 getblock 获取完整区块解析数据。

getblock 9fe5c677efcb138f41554f8e576781ab57263490a076d1bfa22c5bb20650dcea 2  { "hash": "9fe5c677efcb138f41554f8e576781ab57263490a076d1bfa22c5bb20650dcea", "powhash": "000000000000045f368c30e7bd21d690b89ce4aca59586c8046da42a7b356ffd", "confirmations": 7, "strippedsize": 379, "size": 524, "weight": 1661, "height": 612341, "version": 1610612736, "versionHex": "60000000", "merkleroot": "00fba80c193495571f36fc71347e11a54f48602fcf34250bfae4bbc6a2bb2bbd", "tx": [ { "txid": "779ad0c9d1a0e6991e6ed80eea47b638844d7774d725b9a70b049002e978dd96", "hash": "04559b653a6887e9f7c603b1bcbc007c8c03b384390dd3b0d576a70cd7567c3d", "version": 1, "size": 196, "vsize": 169, "weight": 676, "locktime": 0, "vin": [ { "coinbase": "03f5570904539a815e08908fbd5243000000097575706f6f6c2e636e", "sequence": 0 } ], "vout": [ { "value": 0.0000000, "n": 0, "scriptPubKey": { "asm": "OP_RETURN aa21a9ed1778d0c100d7b665cf564965d49674fad3076108f21cb028fa8455ae859d72fa", "hex": "6a24aa21a9ed1778d0c100d7b665cf564965d49674fad3076108f21cb028fa8455ae859d72fa", "type": "nulldata" } }, { "value": 125.0010000, "n": 1, "scriptPubKey": { "asm": "OP_DUP OP_HASH160 02540af6c20108e78105b871b0e8c0d8dc82addc OP_EQUALVERIFY OP_CHECKSIG", "hex": "76a91402540af6c20108e78105b871b0e8c0d8dc82addc88ac", "reqSigs": 1, "type": "pubkeyhash", "addresses": [ "1DK2nLeaxCx1LgJLBzXNX3M5Vnc3ZocSW" ] } } ], "hex": "010000000001010000000000000000000000000000000000000000000000000000000000000000ffffffff1c03f5570904539a815e08908fbd5243000000097575706f6f6c2e636e00000000020000000000000000266a24aa21a9ed1778d0c100d7b665cf564965d49674fad3076108f21cb028fa8455ae859d72fa90a3814a000000001976a91402540af6c20108e78105b871b0e8c0d8dc82addc88ac0120000000000000000000000000000000000000000000000000000000000000000000000000" }, { "txid": "d7afa9ef2391ff4f194e9dafda71a808b6f7e16b643560389eaa15537ad2b34d", "hash": "5f15f148492ca4fcb2bfc68ee5b05b3e8a4b6a8a7990c8e7f93412bd0ae8101f", "version": 12, "size": 247, "vsize": 166, "weight": 661, "locktime": 0, "vin": [ { "txid": "00af254b8ad00993f9a78447be668be3208a2f460b6e15716caa5e7ffc7d6941", "vout": 0, "scriptSig": { "asm": "001471664f1be1957f5a57fd0ed6b9a002ae4e913ea0", "hex": "16001471664f1be1957f5a57fd0ed6b9a002ae4e913ea0" }, "txinwitness": [ "3044022003ff244a3f38682da0bf9d526dc3aa56fc3ab6dfa4471fe2c6c626b5494e818402206938b0310161907bf1c275fb561afb6e2a4b1523dfdf03a3e72a15aa91fc354101", "03f4e9193c6783b18af381ddd34dc173a8adf2ea314c443aea2e2df2ce67895de4" ], "sequence": 4294967295 } ], "vout": [ { "value": 5.6990000, "n": 0, "scriptPubKey": { "asm": "OP_HASH160 a4ba523a5f1624af596188b44e177f3a8519b8c2 OP_EQUAL", "hex": "a914a4ba523a5f1624af596188b44e177f3a8519b8c287", "reqSigs": 1, "type": "scripthash", "addresses": [ "3Gi1wpyxv7y4NqnkDDfKcXAjyTfTiDt1LZ" ] } } ], "hex": "0c0000002ba634ace4b9f9ca00cd3d977f4c2c72976687398623e18c38abbe4a1617abb800010141697dfc7f5eaa6c71156e0b462f8a20e38b66be4784a7f99309d08a4b25af00000000001716001471664f1be1957f5a57fd0ed6b9a002ae4e913ea0ffffffff01309965030000000017a914a4ba523a5f1624af596188b44e177f3a8519b8c28702473044022003ff244a3f38682da0bf9d526dc3aa56fc3ab6dfa4471fe2c6c626b5494e818402206938b0310161907bf1c275fb561afb6e2a4b1523dfdf03a3e72a15aa91fc3541012103f4e9193c6783b18af381ddd34dc173a8adf2ea314c443aea2e2df2ce67895de400000000" } ], "time": 1585551955, "mediantime": 1585549259, "nonce": 3348295427, "bits": "1a053387", "difficulty": 3225545.295903729, "chainwork": "000000000000000000000000000000000000000000b80c991653e4b5c9b0053f", "nTx": 2, "previousblockhash": "b8ab17164abeab388ce1238639876697722c4c7f973dcd00caf9b9e4ac34a62b", "nextblockhash": "3d65bd955bca5cce334afee24086f91d41a1ab164e709ebd419d5c1c71eb63f1" }

反序列化

接收到rawblock数据之后，可以对数据进行区块反序列化

区块原始数据

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

其中前80个字节为区块头

000000602ba634ace4b9f9ca00cd3d977f4c2c72976687398623e18c38abbe4a1617abb8bd2bbba2c6bbe4fa0b2534cf2f60484fa5117e3471fc361f579534190ca8fb00539a815e8733051a03ef92c7

81 字节开始为 varint

02

后面即两个交易

010000000001010000000000000000000000000000000000000000000000000000000000000000ffffffff1c03f5570904539a815e08908fbd5243000000097575706f6f6c2e636e00000000020000000000000000266a24aa21a9ed1778d0c100d7b665cf564965d49674fad3076108f21cb028fa8455ae859d72fa90a3814a000000001976a91402540af6c20108e78105b871b0e8c0d8dc82addc88ac0120000000000000000000000000000000000000000000000000000000000000000000000000

0c0000002ba634ace4b9f9ca00cd3d977f4c2c72976687398623e18c38abbe4a1617abb800010141697dfc7f5eaa6c71156e0b462f8a20e38b66be4784a7f99309d08a4b25af00000000001716001471664f1be1957f5a57fd0ed6b9a002ae4e913ea0ffffffff01309965030000000017a914a4ba523a5f1624af596188b44e177f3a8519b8c28702473044022003ff244a3f38682da0bf9d526dc3aa56fc3ab6dfa4471fe2c6c626b5494e818402206938b0310161907bf1c275fb561afb6e2a4b1523dfdf03a3e72a15aa91fc3541012103f4e9193c6783b18af381ddd34dc173a8adf2ea314c443aea2e2df2ce67895de400000000

可使用 BCDTransactionDemo 中的交易反序列化进行解析

// 反序列化
byte[] newRawTransaction = Utils.HEX.decode(hexRawTransaction);
Transaction newTx = new Transaction(params, newRawTransaction);