> For the complete documentation index, see [llms.txt](https://docs.blockrazor.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.blockrazor.io/tc/transaction-submission/fast/solana/send-transaction.md).

# Send Transaction

{% hint style="warning" %}
Solana發送交易的服務不和訂閱計劃綁定，可前往 [Authentication](/tc/get-started/authentication.md) 獲取API KEY，默认限流为3 TPS。如需提升限流標準，請[聯繫](https://discord.com/invite/qqJuwRb8Nh)我們，我們會在第一時間處理
{% endhint %}

`Send Transaction` 是 BlockRazor 為 Solana 提供的快速交易發送接口，用於將已簽名交易以更低延遲發送到鏈上。該服務基於 HTTP 和 gRPC 提供接入方式，適合對交易上鏈速度有較高要求的用戶。

`Send Transaction` 在兼容現有發送方式的前提下，通過 BlockRazor 的 [BEF](/tc/he-xin-ji-shu/blockchain-edge-fabric.md)，縮短交易從客戶端到 Leader 節點之間的路徑，提升交易上鏈速度。 `Send Transaction` 的上鏈路徑、測試說明和benchamark結果可參考 [構建極速 Solana 交易發送服務](https://blockrazor.io/zh/blog/20250801Benchmarking/)

目前，Send Transaction 支持 fast 和 sandwichMitigation 兩種模式：

* fast 模式適合對發送速度要求更高的場景
* sandwichMitigation 模式適合希望在速度和特定風險控制之間做平衡的場景

### 端點

* `POST /sendTransaction` 
* `gRPC` 

### 交易請求示例

* [Curl](/tc/transaction-submission/fast/solana/send-transaction/qing-qiu-shi-li/curl.md)
* [Go](/tc/transaction-submission/fast/solana/send-transaction/qing-qiu-shi-li/go.md)
* [Rust](/tc/transaction-submission/fast/solana/send-transaction/qing-qiu-shi-li/rust.md)
* [JS](/tc/transaction-submission/fast/solana/send-transaction/qing-qiu-shi-li/js.md)

### 请求参数

<table><thead><tr><th width="103.18359375">字段</th><th width="77.1875">必填</th><th width="125.62890625">示例</th><th>備注</th></tr></thead><tbody><tr><td>transaction</td><td>是</td><td>"4hXTCk……tAnaAT"</td><td>已完成簽名的交易，兼容Base64和Base58的編碼格式，建議用Base64</td></tr><tr><td>mode</td><td>否</td><td>"fast"<br>"sandwichMitigation"</td><td>BlockRazor支持fast和sandwichMitigation兩種模式，默認為fast模式。<br><br>在fast模式中，交易會基於全球分布式高性能網絡和高質量SWQoS質押鏈路被飽和式發送，以最低延遲到達Leader節點。<br><br>在sandwichMitigation模式中，交易會被發往BlockRazor高度信任的SWQoS質押鏈路，同時交易會跳過黑名單Leader(經BlockRazor三明治監測機制動態精確識別)的slot。在此模式下，<strong>請不要用</strong>durable nonce發送交易，這會使三明治保護失效。</td></tr><tr><td>safeWindow</td><td>否</td><td>3</td><td>sandwichMitigation模式中用於確定交易發送時機的參數，數字代表從當前slot起連續白名單驗證者的slot數量，比如設定3，則交易會僅在當前起連續3個slot都屬於白名單驗證者時發送。<br><br>safeWindow的參數範圍是3-13，數字越大防治三明治攻擊效果越好，但可能會對上鏈速度有一定影響。如不設定，則默認為3。</td></tr><tr><td>revertProtection</td><td>否</td><td>false</td><td>默認為false。如設置為true，交易不會在鏈上執行失敗，但上鏈速度会受到影响且存在无法上链的可能，請根據實際需求謹慎選擇開啓。</td></tr></tbody></table>


---

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