# Class BSV::Network::Protocols::TAALBinary <a id="class-BSV-Network-Protocols-TAALBinary"></a>

**Inherits:** `BSV::Network::Protocol`

TAALBinary implements the TAAL broadcast API using raw binary transaction
submission over HTTP.

TAAL quirks handled here:
*   Content-Type is <code>application/octet-stream</code> (not JSON)
*   Authorization header is applied via the standard `apply_auth` mechanism
*   A response containing <code>txn-already-known</code> in the error field is
    treated as success (the transaction is already in the mempool —
    idempotent)

## Example

    protocol = BSV::Network::Protocols::TAALBinary.new(
      base_url: 'https://api.taal.com',
      auth: { api_key: 'mainnet_your_key_here' }
    )
    result = protocol.call(:broadcast, tx)
    puts result.data[:txid] if result.http_success?

- **@see** `https://docs.taal.com` TAAL API documentation

## Public Instance Methods
### `initialize(base_url:, api_key: = nil, auth: = nil, http_client: = nil)` <a id="method-i-initialize"></a> <a id="initialize-instance_method"></a>
- **@param** `base_url` [String] base URL for the TAAL binary API
- **@param** `api_key` [String, nil] legacy API key shorthand (no Bearer prefix) — use +auth:+ for new code
- **@param** `auth` [Hash, Symbol, nil] auth config; takes precedence over +api_key:+
- **@param** `http_client` [Object, nil] injectable HTTP client for testing
- **@return** [TAALBinary] a new instance of TAALBinary