> For the complete documentation index, see [llms.txt](https://docs.bloxroute.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bloxroute.com/eth/streams/blocks-streams/bdnblocks.md). # bdnBlocks **`bdnBlocks`** is a stream of all new blocks as they are propagated in the BDN. The blocks published in the **`bdnBlocks`** stream may include blocks that will not be accepted on chain. This stream offers significant performance speed over the **`newBlocks`** stream (from the Gateway or the node). **Service available on both Cloud-API and Gateway-API.** ## Stream Endpoint * Method: `bdnBlocks` * Cloud-API Endpoint: `wss://.eth.blxrbdn.com/ws` * Gateway-API Endpoint: `ws://127.0.0.1:28333/ws` * Request type: `gRPC`*`,WSS`* {% hint style="info" %} **Performance tip:** If you don’t need parsed transaction fields, set **`parsedTxs`**`: false` to receive blocks **\~20–60 ms faster** with less overhead. {% endhint %} {% hint style="info" %} For valid `` values, refer to [Cloud API](/core-solutions/accessing-the-bdn/cloud-api.md#available-regions) {% endhint %} ### Parameters | Key | Description | Values | | --------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **`include`** | Fields to include in the block stream. |

hash,header,transactions,uncles,future\_validator\_info,withdrawals

\[Default: all]

future\_validator\_info contains validator addresses for future blocks and indicates whether the validators are connected to the BDN (currently only supported in BSC)
withdrawals

contains withdrawals for ETH block

| | **`parsedTxs`** | Controls whether transactions in each block are returned as fully parsed JSON objects (`true`) or as raw, unparsed RLP payloads (`false`). Disabling parsing reduces server work and improves delivery latency. |

Type: boolean

\[Default: false]

| ### Examples (Websocket) #### **Cloud-API** {% tabs %} {% tab title="wscat" %} ```bash ## ETH Example wscat -c wss://virginia.eth.blxrbdn.com/ws --header "Authorization: " > {"jsonrpc": "2.0", "id": 1, "method": "subscribe", "params": ["bdnBlocks", {"include": ["hash"], "parsedTxs": true}]} < ...... ``` {% endtab %} {% tab title="Node.js" %} ```javascript var fs = require('fs'); const WebSocket = require('ws'); // Enterprise users can follow line 5-16 const ws = new WebSocket( 'wss://virginia.eth.blxrbdn.com/ws', // for ETH { headers: { "Authorization" : }, // Add the following line if you work with IP instead of DNS // rejectUnauthorized: false, } ); // const ws = new WebSocket( // "wss://virginia.eth.blxrbdn.com/ws", // { // headers: { // "Authorization" : // }, // rejectUnauthorized: false, // } // ); function proceed() { // ETH Example ws.send(`{"jsonrpc": "2.0", "id": 1, "method": "subscribe", "params": ["bdnBlocks", {"include": ["tx_hash"]}]}`); } function handle(nextNotification) { console.log(nextNotification.toString()); // or process it generally } ws.on('open', proceed); ws.on('message', handle); ``` {% endtab %} {% tab title="Python" %} ```python import asyncio, json, ssl, websockets async def main(): auth_key = "YOUR_AUTHORIZATION_HEADER" uri = 'wss://virginia.eth.blxrbdn.com/ws' async with websockets.connect( uri, header=["Authorization:{}".format(auth_key)], sslopt={"cert_reqs": ssl.CERT_NONE}, ) as websocket: # ETH Example subscribe_request = { "jsonrpc": "2.0", "id": 1, "method": "subscribe", "params": ["bdnBlocks", {"include": [""]}] } await websocket.send(json.dumps(subscribe_request)) response = await websocket.recv() subscription_id = json.loads(response)["result"] while True: next_notification = await websocket.recv() print(next_notification) # or process it generally unsubscribe_request = { "jsonrpc": "2.0", "id": 2, "method": "unsubscribe", "params": [subscription_id] } await websocket.send(json.dumps(unsubscribe_request)) if __name__ == '__main__': asyncio.run(main()) ``` {% endtab %} {% tab title="Golang" %} ```go package main import ( "crypto/tls" "fmt" "github.com/gorilla/websocket" "net/http" ) func main() { dialer := websocket.DefaultDialer // Add the following lines if you work with IP instead of DNS // tlsConfig := &tls.Config{ // Certificates: []tls.Certificate{cert}, // InsecureSkipVerify: true, // } // dialer.TLSClientConfig = tlsConfig wsSubscriber, _, err := dialer.Dial("wss://virginia.eth.blxrbdn.com/ws", http.Header{"Authorization": []string{}}) if err != nil { fmt.Println(err) return } // ETH Example subRequest := `{"id": 1, "method": "subscribe", "params": ["bdnBlocks", {"include": ["hash"]}]}` err = wsSubscriber.WriteMessage(websocket.TextMessage, []byte(subRequest)) if err != nil { fmt.Println(err) return } for { _, nextNotification, err := wsSubscriber.ReadMessage() if err != nil { fmt.Println(err) } fmt.Println(string(nextNotification)) // or process it generally } } ``` {% endtab %} {% endtabs %} #### **Gateway-API** {% tabs %} {% tab title="wscat" %} ```bash wscat -c ws://127.0.0.1:28333/ws --header "Authorization: " > {"jsonrpc": "2.0", "id": 1, "method": "subscribe", "params": ["bdnBlocks", {"include": ["hash"], "parsedTxs": true}]} < ...... ``` {% endtab %} {% tab title="gRPC" %} ```go package main import ( "context" "fmt" pb "github.com/bloXroute-Labs/gateway/v2/protobuf" "google.golang.org/grpc" "google.golang.org/grpc/credentials/insecure" "time" ) type blxrCredentials struct { authorization string } func (bc blxrCredentials) GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error) { return map[string]string{ "authorization": bc.authorization, }, nil } func (bc blxrCredentials) RequireTransportSecurity() bool { return false } func main() { // gRPC server default values gatewayHostIP := "localhost" gatewayGRPCPort := 5001 // Open gRPC connection to Gateway. conn, _ := grpc.Dial( fmt.Sprintf("%v:%v", gatewayHostIP, gatewayGRPCPort), grpc.WithTransportCredentials(insecure.NewCredentials()), grpc.WithPerRPCCredentials(blxrCredentials{authorization: ""}), ) // Use the Gateway client connection interface. client := pb.NewGatewayClient(conn) // create context and defer cancel of context callContext, cancel := context.WithTimeout(context.Background(), 24*time.Hour) defer cancel() // Create a subscription using the stream-specific method and request. stream, _ := client.BdnBlocks(callContext, &pb.BlocksRequest{}) for { subscriptionNotification, err := stream.Recv() if err == nil { fmt.Println(subscriptionNotification) // or process it generally } } } ``` {% endtab %} {% endtabs %} #### Response (Block Event) {% hint style="info" %} This response is for when `parsedTxs` is set to `true` in the stream subscription {% endhint %} {% tabs %} {% tab title="Block Event Cloud-API" %} ```bash { "jsonrpc": "2.0", "id": 1, "method": "subscribe", "params": { "subscription": "b5c2d94d-932c-49ba-b33b-77f8aa48038e", "result": { "hash": "0x7f523fa4c2f1817f466c19c758e39548a3cf6a409867789e1881b3cd558d7dc2", "Block": { "ReceivedAt": "0001-01-01T00:00:00Z", "ReceivedFrom": null }, "header": { "parentHash": "0x6bdd73c3bc4bb4c89f7030cd761a57ae5162d73ac4c07c8bda1f97cd6debb8c2", "sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347", "miner": "0x396343362be2a4da1ce0c1c210945346fb82aa49", "stateRoot": "0xaf84b0e9636d33a8f5d6dd75bd966dcce3eaf5802f528004114f941b39373a56", "transactionsRoot": "0x2251a8ce676b2c30e1572494813987793fe31d01693f1270fe50cb01cdb14b9b", "receiptsRoot": "0x927f20e30a29a18b15369af9361f265f075d6c874b9715502466b29d883fdddd", "logsBloom": "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", "difficulty": "0x0", "number": "0x1749bbc", "gasLimit": "0x3938700", "gasUsed": "0x199fa9c", "timestamp": "0x6989d563", "milliTimestamp": "0x19c42698ab8", "extraData": "0xe29ca82051756173617220287175617361722e77696e2920e29ca8", "mixHash": "0x09ff73e2cac159e9b51a8551c3b4c4c8d0bd2983b4b2b3cc310956991a98be55", "nonce": "0x0000000000000000", "baseFeePerGas": 56430067, "withdrawalsRoot": "0xd3729e7538b8429960c89884f8303fcbd2f9acf763eecb8d7d07f985b6244a68", "blobGasUsed": "0xa0000", "excessBlobGas": "0xa7524ff", "parentBeaconBlockRoot": "0xfca8908485db24b844eaa38c4b00172963e9d3420466fbea9555a1f03c866e12", "requestsHash": "0x85e253b40599d0df756be043ea6949e49a07e756deef72b3588a4b05362206b5" }, "transactions": [ { "accessList": [], "blobVersionedHashes": [], "chainId": "0x1", "from": "0x77c3cde112804ea43af31dfa5b371c146c3d98ee", "gas": "0x22e95", "gasPrice": "0x7c4b15fb", "hash": "0x02bbc7ea80cc7107df781fd61d2ae45afe0e4fd19e4e12131aab7efa31049cc5", "input": "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", "maxFeePerGas": "0x7c4b15fb", "maxPriorityFeePerGas": "0x77359400", "nonce": "0x4", "r": "0x7538f7aabcd6d8140f36e45b5cdcdb2c4ff18050e8761475c8047f966cfa4c2d", "s": "0x23656ec1217a032e2666d9f0af73e40bb1caa8c3fa57e6181ee7a76927730ad7", "to": "0x66a9893cc07d91d95644aedd05d03f95e1dba8af", "type": "0x2", "v": "0x1", "value": "0x2ea0334ab450d4d", "yParity": "0x1" }, ... ] } } } ``` {% endtab %} {% tab title="Block Event Gateway-API" %} ```bash { "future_validator_info": [], "transaction": [ { "from": "", "local_region": false, "time": "0", "raw_tx": "+I6DAlTHhQHc1lHAglnYlBXsRrWI...3SFs7n3n3UUCAVX1weV6HLAcAKuA" }, .... { "from": "", "local_region": false, "time": "0", "raw_tx": "AviPgkJogwkGOoQ7mso...3Z99ZUu1/Jc0B9ytQ=" } ], "withdrawals": [ { "address": "0x9baA3244565d51D9C7897c0EB6679eD4890e536E", "amount": "0x60077b", "index": "0x104ed81", "validator_index": "0x1ee90" }, .... { "address": "0x9baA3244565d51D9C7897c0EB6679eD4890e536E", "amount": "0x604095", "index": "0x104ed90", "validator_index": "0x1ee9f" } ], "hash": "0xd9cfa479b98ae15...a7e629fe3435e6169abca", "subscriptionID": "c5451b97-c82c-47e2-a70e-74e3256584e6", "header": { "parent_hash": "0xf3fd6b6011eed8d...f482e9345a3fe5dfe9e26c1db", "sha3_uncles": "0x1dcc4de8dec75d7aa...48a7413f0a142fd40d49347", "miner": "0x0c10000000756...7f022929a97bda45", "state_root": "0xf074e94fc3d700a8f....9ea3280595bd5acd5d97d0", "transactions_root": "0xedade2fe2198c....ccf38eeaacb2ccaa92e60", "receipts_root": "0x2ff34bb52237c31b8...78e0ac369028cb63f", "logs_bloom": "0x4c0008000804...00402004048", "difficulty": "0x0", "number": "0x107336", "gas_limit": "0x1c9c380", "gas_used": "0x11bc8e3", "timestamp": "0x65e73b50", "extra_data": "0xd883010d0e846....2312e37856c696e7578", "mix_hash": "0xf6743b00bce48fc1617acf...84d781807a3866ab", "nonce": "0x0000000000000000", "base_fee_per_gas": "59", "withdrawals_root": "0x5e9855e2716a2b4793d4e...9faa41d9c876fcff1b", "blob_gas_used": "0x80000", "excess_blob_gas": "0x4b20000", "parent_beacon_root": "0xe83661292da71373c38...3a91a5e27ac4a59ea3c" } } ``` {% endtab %} {% endtabs %} --- # Agent Instructions This documentation is published with GitBook. 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