chore: release v3.5.4

- Bump version to 3.5.4; update README and README_CN
- Astralane: irisb binary API (no Base64), POST /irisb with query api-key&method; constants use /irisb endpoints; ping POST getHealth
- BlockRazor: Send Transaction v2 (plain Base64 body, Content-Type text/plain, auth in URI only); ping POST /v2/health; use default_http_client_builder
- SWQOS: all clients use default_http_client_builder (nextblock, temporal, zeroslot, astralane, lightspeed, jito, flashblock); remove unused Duration imports

Made-with: Cursor

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "sol-trade-sdk"
-version = "3.5.3"
+version = "3.5.4"
 edition = "2021"
 authors = [
     "William <byteblock6@gmail.com>",

README.md

@@ -60,31 +60,6 @@
 
 ---
 
-## 🆕 What's new in 3.5.3
-
-- **Full release**: Includes all updates (3.5.2 SWQoS perf + IDL/instruction changes). Use this version.
-- **SWQoS submit latency**: Sync serialize + buffer-pool hot path; `format!` body for single/batch submit (Bloxroute); avoid status clone in confirmation polling.
-- **First-submit & 5-min idle**: Immediate first ping + 30s keepalive; `pool_max_idle_per_host=4` and `pool_idle_timeout=300s` (BlockRazor, Temporal, Node1, Astralane, Stellium); ping consumes response body for connection reuse.
-- **PumpFun / PumpSwap**: IDL updates (pump.json, pump_amm.json); instruction and utils updates for pumpfun and pumpswap; fast_fn and release notes.
-
-## 🆕 What's new in 3.5.2
-
-- **SWQoS submit latency**: Sync serialize + buffer-pool hot path; `format!` body for single/batch submit (Bloxroute); avoid status clone in confirmation polling.
-- **First-submit & 5-min idle**: Immediate first ping + 30s keepalive; `pool_max_idle_per_host=4` and `pool_idle_timeout=300s` (BlockRazor, Temporal, Node1, Astralane, Stellium) so submit reuses the same connection; ping consumes response body for connection reuse.
-- **Docs**: All SWQoS comments translated to English.
-
-## 🆕 What's new in 3.5.1
-
-- **SWQoS / executor**: Updates to common SWQoS logic and trading executor.
-
-## 🆕 What's new in 3.5.0
-
-- **Performance**: Hot-path timing only when logging; reduced clones (`execute_parallel` takes `&[Arc<SwqosClient>]`); shared HTTP client constants for SWQoS.
-- **Code quality**: Extracted `validate_protocol_params` for buy/sell; constants for instruction/account sizes and HTTP timeouts; prefetch and branch-hint comments.
-- **Documentation**: Bilingual (English + 中文) doc comments across execution, executor, perf, and swqos modules.
-
----
-
 ## ✨ Features
 
 1. **PumpFun Trading**: Support for `buy` and `sell` operations
@@ -114,14 +89,14 @@ Add the dependency to your `Cargo.toml`:
 
 ```toml
 # Add to your Cargo.toml
-sol-trade-sdk = { path = "./sol-trade-sdk", version = "3.5.3" }
+sol-trade-sdk = { path = "./sol-trade-sdk", version = "3.5.4" }
 ```
 
 ### Use crates.io
 
 ```toml
 # Add to your Cargo.toml
-sol-trade-sdk = "3.5.3"
+sol-trade-sdk = "3.5.4"
 ```
 
 ## 🛠️ Usage Examples

README_CN.md

@@ -60,14 +60,6 @@
 
 ---
 
-## 🆕 3.5.0 更新说明
-
-- **性能**：仅在打日志时做热路径计时；减少 clone（`execute_parallel` 改为接收 `&[Arc<SwqosClient>]`）；SWQoS 共用 HTTP 客户端常量。
-- **代码质量**：抽取 buy/sell 共用的 `validate_protocol_params`；指令/账户大小与 HTTP 超时常量化；预取与分支提示注释完善。
-- **文档**：execution、executor、perf、swqos 等模块增加中英双语文档注释。
-
----
-
 ## ✨ 项目特性
 
 1. **PumpFun 交易**: 支持`购买`、`卖出`功能
@@ -97,14 +89,14 @@ git clone https://github.com/0xfnzero/sol-trade-sdk
 
 ```toml
 # 添加到您的 Cargo.toml
-sol-trade-sdk = { path = "./sol-trade-sdk", version = "3.5.3" }
+sol-trade-sdk = { path = "./sol-trade-sdk", version = "3.5.4" }
 ```
 
 ### 使用 crates.io
 
 ```toml
 # 添加到您的 Cargo.toml
-sol-trade-sdk = "3.5.0"
+sol-trade-sdk = "3.5.4"
 ```
 
 ## 🛠️ 使用示例

src/constants/swqos.rs

@@ -227,26 +227,30 @@ pub const SWQOS_ENDPOINTS_FLASHBLOCK: [&str; 8] = [
     "http://ny.flashblock.trade",
 ];
 
+/// BlockRazor Send Transaction v2: plain-text Base64 body, auth in URI, Content-Type: text/plain. Keep-alive: POST /v2/health.
 pub const SWQOS_ENDPOINTS_BLOCKRAZOR: [&str; 8] = [
-    "http://newyork.solana.blockrazor.xyz:443/sendTransaction",
-    "http://frankfurt.solana.blockrazor.xyz:443/sendTransaction",
-    "http://amsterdam.solana.blockrazor.xyz:443/sendTransaction",
-    "http://newyork.solana.blockrazor.xyz:443/sendTransaction",
-    "http://tokyo.solana.blockrazor.xyz:443/sendTransaction",
-    "http://frankfurt.solana.blockrazor.xyz:443/sendTransaction",
-    "http://newyork.solana.blockrazor.xyz:443/sendTransaction",
-    "http://frankfurt.solana.blockrazor.xyz:443/sendTransaction",
+    "http://newyork.solana.blockrazor.xyz:443/v2/sendTransaction",
+    "http://frankfurt.solana.blockrazor.xyz:443/v2/sendTransaction",
+    "http://amsterdam.solana.blockrazor.xyz:443/v2/sendTransaction",
+    "http://newyork.solana.blockrazor.xyz:443/v2/sendTransaction",
+    "http://tokyo.solana.blockrazor.xyz:443/v2/sendTransaction",
+    "http://london.solana.blockrazor.xyz:443/v2/sendTransaction",
+    "http://newyork.solana.blockrazor.xyz:443/v2/sendTransaction",
+    "http://frankfurt.solana.blockrazor.xyz:443/v2/sendTransaction",
 ];
 
+/// Astralane binary API path (no Base64; use with ?api-key=...&method=sendTransaction|getHealth).
+pub const ASTRALANE_PATH_IRISB: &str = "irisb";
+
 pub const SWQOS_ENDPOINTS_ASTRALANE: [&str; 8] = [
-    "http://ny.gateway.astralane.io/iris",
-    "http://fr.gateway.astralane.io/iris",
-    "http://ams.gateway.astralane.io/iris",
-    "http://ny.gateway.astralane.io/iris",
-    "http://jp.gateway.astralane.io/iris",
-    "http://ny.gateway.astralane.io/iris",
-    "http://lax.gateway.astralane.io/iris",
-    "http://lim.gateway.astralane.io/iris",
+    "http://ny.gateway.astralane.io/irisb",
+    "http://fr.gateway.astralane.io/irisb",
+    "http://ams.gateway.astralane.io/irisb",
+    "http://ny.gateway.astralane.io/irisb",
+    "http://jp.gateway.astralane.io/irisb",
+    "http://ny.gateway.astralane.io/irisb",
+    "http://lax.gateway.astralane.io/irisb",
+    "http://lim.gateway.astralane.io/irisb",
 ];
 
 pub const SWQOS_ENDPOINTS_STELLIUM: [&str; 8] = [

src/swqos/astralane.rs

@@ -1,13 +1,12 @@
-use crate::swqos::common::{poll_transaction_confirmation, serialize_transaction_and_encode};
+use crate::swqos::common::{default_http_client_builder, poll_transaction_confirmation};
 use rand::seq::IndexedRandom;
 use reqwest::Client;
-use serde_json::json;
 use std::{sync::Arc, time::Instant};
 
 use std::time::Duration;
-use solana_transaction_status::UiTransactionEncoding;
-
 use anyhow::Result;
+use bincode::serialize as bincode_serialize;
+use solana_client::rpc_client::SerializableTransaction;
 use solana_sdk::transaction::VersionedTransaction;
 use crate::swqos::{SwqosType, TradeType};
 use crate::swqos::SwqosClientTrait;
@@ -17,6 +16,9 @@ use crate::{common::SolanaRpcClient, constants::swqos::ASTRALANE_TIP_ACCOUNTS};
 use tokio::task::JoinHandle;
 use std::sync::atomic::{AtomicBool, Ordering};
 
+/// Empty body for getHealth POST; avoid per-request allocation.
+static PING_BODY: &[u8] = &[];
+
 #[derive(Clone)]
 pub struct AstralaneClient {
     pub endpoint: String,
@@ -50,19 +52,7 @@ impl SwqosClientTrait for AstralaneClient {
 impl AstralaneClient {
     pub fn new(rpc_url: String, endpoint: String, auth_token: String) -> Self {
         let rpc_client = SolanaRpcClient::new(rpc_url);
-        let http_client = Client::builder()
-            // Optimized connection pool settings for high performance
-            .pool_idle_timeout(Duration::from_secs(300))
-            .pool_max_idle_per_host(4)
-            .tcp_keepalive(Some(Duration::from_secs(60)))  // Reduced from 1200 to 60
-            .tcp_nodelay(true)  // Disable Nagle's algorithm for lower latency
-            .http2_keep_alive_interval(Duration::from_secs(10))
-            .http2_keep_alive_timeout(Duration::from_secs(5))
-            .http2_adaptive_window(true)  // Enable adaptive flow control
-            .timeout(Duration::from_millis(3000))  // Reduced from 10s to 3s
-            .connect_timeout(Duration::from_millis(2000))  // Reduced from 5s to 2s
-            .build()
-            .unwrap();
+        let http_client = default_http_client_builder().build().unwrap();
         
         let client = Self { 
             rpc_client: Arc::new(rpc_client), 
@@ -90,13 +80,9 @@ impl AstralaneClient {
         let stop_ping = self.stop_ping.clone();
         
         let handle = tokio::spawn(async move {
-            // Immediate first ping to warm connection and reduce first-submit cold start latency
-            if let Err(e) = Self::send_ping_request(&http_client, &endpoint, &auth_token).await {
-                eprintln!("Astralane ping request failed: {}", e);
-            }
             let mut interval = tokio::time::interval(Duration::from_secs(30));
             loop {
-                interval.tick().await;
+                interval.tick().await; // first tick completes immediately → one ping at start
                 if stop_ping.load(Ordering::Relaxed) {
                     break;
                 }
@@ -116,71 +102,49 @@ impl AstralaneClient {
         }
     }
 
-    /// Send ping request to /gethealth endpoint
+    /// Send ping request: POST endpoint?api-key=...&method=getHealth (endpoint is irisb from constants).
     async fn send_ping_request(http_client: &Client, endpoint: &str, auth_token: &str) -> Result<()> {
-        // Build ping URL by replacing /iris with /gethealth
-        let ping_url = if endpoint.ends_with("/iris") {
-            endpoint.replace("/iris", "/gethealth")
-        } else if endpoint.ends_with("/iris/") {
-            endpoint.replace("/iris/", "/gethealth")
-        } else if endpoint.ends_with('/') {
-            format!("{}gethealth", endpoint)
-        } else {
-            format!("{}/gethealth", endpoint)
-        };
-
-        // Short timeout for ping; consume body so connection is returned to pool for reuse by submit
-        let response = http_client.get(&ping_url)
-            .header("api_key", auth_token)
+        let response = http_client
+            .post(endpoint)
+            .query(&[("api-key", auth_token), ("method", "getHealth")])
             .timeout(Duration::from_millis(1500))
+            .body(PING_BODY)
             .send()
             .await?;
         let status = response.status();
-        let _ = response.bytes().await;
+        let _ = response.bytes().await; // consume body so connection returns to pool
         if !status.is_success() {
             eprintln!("Astralane ping request returned non-success status: {}", status);
         }
         Ok(())
     }
 
+    /// Send transaction via /irisb binary API (no Base64; lower latency).
     pub async fn send_transaction(&self, trade_type: TradeType, transaction: &VersionedTransaction, wait_confirmation: bool) -> Result<()> {
         let start_time = Instant::now();
-        let (content, signature) = serialize_transaction_and_encode(transaction, UiTransactionEncoding::Base64)?;
+        let signature = transaction.get_signature();
 
-        let request_body = serde_json::to_string(&json!({
-            "jsonrpc": "2.0",
-            "id": 1,
-            "method": "sendTransaction",
-            "params": [
-                content,
-                { "encoding": "base64", "skipPreflight": true },
-                { "mevProtect": false }
-            ]
-        }))?;
+        let body_bytes = bincode_serialize(transaction).map_err(|e| anyhow::anyhow!("Astralane binary serialize failed: {}", e))?;
 
-        // Send request with api_key header
-        let response_text = self.http_client.post(&self.endpoint)
-            .body(request_body)
-            .header("Content-Type", "application/json")
-            .header("api_key", &self.auth_token)
+        let response = self.http_client
+            .post(&self.endpoint)
+            .query(&[("api-key", self.auth_token.as_str()), ("method", "sendTransaction")])
+            .header("Content-Type", "application/octet-stream")
+            .body(body_bytes)
             .send()
-            .await?
-            .text()
             .await?;
 
-        // Parse JSON response
-        if let Ok(response_json) = serde_json::from_str::<serde_json::Value>(&response_text) {
-            if response_json.get("result").is_some() {
-                println!(" [astralane] {} submitted: {:?}", trade_type, start_time.elapsed());
-            } else if let Some(_error) = response_json.get("error") {
-                eprintln!(" [astralane] {} submission failed: {:?}", trade_type, _error);
-            }
+        let status = response.status();
+        let _ = response.bytes().await;
+        if status.is_success() {
+            println!(" [astralane] {} submitted: {:?}", trade_type, start_time.elapsed());
         } else {
-            eprintln!(" [astralane] {} submission failed: {:?}", trade_type, response_text);
+            eprintln!(" [astralane] {} submission failed: status {}", trade_type, status);
+            return Err(anyhow::anyhow!("Astralane sendTransaction failed: {}", status));
         }
 
-        let start_time: Instant = Instant::now();
-        match poll_transaction_confirmation(&self.rpc_client, signature, wait_confirmation).await {
+        let start_time = Instant::now();
+        match poll_transaction_confirmation(&self.rpc_client, *signature, wait_confirmation).await {
             Ok(_) => (),
             Err(e) => {
                 println!(" signature: {:?}", signature);

src/swqos/blockrazor.rs

@@ -1,7 +1,6 @@
-use crate::swqos::common::{poll_transaction_confirmation, serialize_transaction_and_encode};
+use crate::swqos::common::{default_http_client_builder, poll_transaction_confirmation, serialize_transaction_and_encode};
 use rand::seq::IndexedRandom;
-use reqwest::{Client, header::{HeaderMap, HeaderValue, CONTENT_TYPE}};
-use serde_json::json;
+use reqwest::Client;
 use std::{sync::Arc, time::Instant};
 
 use std::time::Duration;
@@ -50,19 +49,7 @@ impl SwqosClientTrait for BlockRazorClient {
 impl BlockRazorClient {
     pub fn new(rpc_url: String, endpoint: String, auth_token: String) -> Self {
         let rpc_client = SolanaRpcClient::new(rpc_url);
-        let http_client = Client::builder()
-            // Optimized connection pool settings for high performance
-            .pool_idle_timeout(Duration::from_secs(300))  // 5min so ping-kept connection is not evicted early
-            .pool_max_idle_per_host(4)    // Few connections so submit reuses same connection as ping, avoiding cold connection after ~5min server idle close
-            .tcp_keepalive(Some(Duration::from_secs(60)))  // Reduced from 1200 to 60
-            .tcp_nodelay(true)  // Disable Nagle's algorithm for lower latency
-            .http2_keep_alive_interval(Duration::from_secs(10))
-            .http2_keep_alive_timeout(Duration::from_secs(5))
-            .http2_adaptive_window(true)  // Enable adaptive flow control
-            .timeout(Duration::from_millis(3000))  // Reduced from 10s to 3s
-            .connect_timeout(Duration::from_millis(2000))  // Reduced from 5s to 2s
-            .build()
-            .unwrap();
+        let http_client = default_http_client_builder().build().unwrap();
         
         let client = Self { 
             rpc_client: Arc::new(rpc_client), 
@@ -120,31 +107,15 @@ impl BlockRazorClient {
         }
     }
 
-    /// Send ping request to /health endpoint
+    /// Send ping request: POST /v2/health?auth=... (Keep Alive). Only required param: auth.
     async fn send_ping_request(http_client: &Client, endpoint: &str, auth_token: &str) -> Result<()> {
-        // Build health URL by replacing sendTransaction with health
-        let ping_url = if endpoint.ends_with("sendTransaction") {
-            endpoint.replace("sendTransaction", "health")
-        } else if endpoint.ends_with("/sendTransaction") {
-            endpoint.replace("/sendTransaction", "/health")
-        } else {
-            // Fallback to original logic if endpoint doesn't end with sendTransaction
-            if endpoint.ends_with('/') {
-                format!("{}health", endpoint)
-            } else {
-                format!("{}/health", endpoint)
-            }
-        };
-
-        // Prepare headers
-        let mut headers = HeaderMap::new();
-        headers.insert("apikey", HeaderValue::from_str(auth_token)?);
-        headers.insert(CONTENT_TYPE, HeaderValue::from_static("application/json"));
-
-        // Short timeout for ping; consume body so connection is returned to pool for reuse by submit
-        let response = http_client.get(&ping_url)
-            .headers(headers)
+        let ping_url = endpoint.replace("/v2/sendTransaction", "/v2/health");
+        let response = http_client
+            .post(&ping_url)
+            .query(&[("auth", auth_token)])
+            .header("Content-Type", "text/plain")
             .timeout(Duration::from_millis(1500))
+            .body(&[] as &[u8])
             .send()
             .await?;
         let status = response.status();
@@ -155,40 +126,33 @@ impl BlockRazorClient {
         Ok(())
     }
 
+    /// Send transaction via v2 API: plain Base64 body, Content-Type: text/plain. Only required URI param: auth.
     pub async fn send_transaction(&self, trade_type: TradeType, transaction: &VersionedTransaction, wait_confirmation: bool) -> Result<()> {
         let start_time = Instant::now();
         let (content, signature) = serialize_transaction_and_encode(transaction, UiTransactionEncoding::Base64)?;
 
-        // BlockRazor fast-mode request format
-        let request_body = serde_json::to_string(&json!({
-            "transaction": content,
-            "mode": "fast"
-        }))?;
-
-        // BlockRazor uses apikey header
-        let response_text = self.http_client.post(&self.endpoint)
-            .body(request_body)
-            .header("Content-Type", "application/json")
-            .header("apikey", &self.auth_token)
+        let response = self.http_client
+            .post(&self.endpoint)
+            .query(&[("auth", self.auth_token.as_str())])
+            .header("Content-Type", "text/plain")
+            .body(content)
             .send()
-            .await?
-            .text()
             .await?;
 
-        // Parse JSON response
-        if let Ok(response_json) = serde_json::from_str::<serde_json::Value>(&response_text) {
+        let status = response.status();
+        let _ = response.bytes().await;
+        if status.is_success() {
             if crate::common::sdk_log::sdk_log_enabled() {
-                if response_json.get("result").is_some() || response_json.get("signature").is_some() {
-                    println!(" [blockrazor] {} submitted: {:?}", trade_type, start_time.elapsed());
-                } else if let Some(_error) = response_json.get("error") {
-                    eprintln!(" [blockrazor] {} submission failed: {:?}", trade_type, _error);
-                }
+                println!(" [blockrazor] {} submitted: {:?}", trade_type, start_time.elapsed());
             }
-        } else if crate::common::sdk_log::sdk_log_enabled() {
-            eprintln!(" [blockrazor] {} submission failed: {:?}", trade_type, response_text);
+        } else {
+            if crate::common::sdk_log::sdk_log_enabled() {
+                eprintln!(" [blockrazor] {} submission failed: status {}", trade_type, status);
+            }
+            return Err(anyhow::anyhow!("BlockRazor sendTransaction failed: {}", status));
         }
 
-        let start_time: Instant = Instant::now();
+        let start_time = Instant::now();
         match poll_transaction_confirmation(&self.rpc_client, signature, wait_confirmation).await {
             Ok(_) => (),
             Err(e) => {

src/swqos/flashblock.rs

@@ -1,10 +1,9 @@
-use crate::swqos::common::{poll_transaction_confirmation, serialize_transaction_and_encode};
+use crate::swqos::common::{default_http_client_builder, poll_transaction_confirmation, serialize_transaction_and_encode};
 use rand::seq::IndexedRandom;
 use reqwest::Client;
 use serde_json::json;
 use std::{sync::Arc, time::Instant};
 
-use std::time::Duration;
 use solana_transaction_status::UiTransactionEncoding;
 
 use anyhow::Result;
@@ -46,19 +45,7 @@ impl SwqosClientTrait for FlashBlockClient {
 impl FlashBlockClient {
     pub fn new(rpc_url: String, endpoint: String, auth_token: String) -> Self {
         let rpc_client = SolanaRpcClient::new(rpc_url);
-        let http_client = Client::builder()
-            // Optimized connection pool settings for high performance
-            .pool_idle_timeout(Duration::from_secs(120))
-            .pool_max_idle_per_host(256)  // Increased from 64 to 256
-            .tcp_keepalive(Some(Duration::from_secs(60)))  // Reduced from 1200 to 60
-            .tcp_nodelay(true)  // Disable Nagle's algorithm for lower latency
-            .http2_keep_alive_interval(Duration::from_secs(10))
-            .http2_keep_alive_timeout(Duration::from_secs(5))
-            .http2_adaptive_window(true)  // Enable adaptive flow control
-            .timeout(Duration::from_millis(3000))  // Reduced from 10s to 3s
-            .connect_timeout(Duration::from_millis(2000))  // Reduced from 5s to 2s
-            .build()
-            .unwrap();
+        let http_client = default_http_client_builder().build().unwrap();
         Self { rpc_client: Arc::new(rpc_client), endpoint, auth_token, http_client }
     }
 

src/swqos/jito.rs

@@ -1,11 +1,10 @@
 
-use crate::swqos::common::{poll_transaction_confirmation, serialize_transaction_and_encode, FormatBase64VersionedTransaction};
+use crate::swqos::common::{default_http_client_builder, poll_transaction_confirmation, serialize_transaction_and_encode, FormatBase64VersionedTransaction};
 use rand::seq::IndexedRandom;
 use reqwest::Client;
 use serde_json::json;
 use std::{sync::Arc, time::Instant};
 
-use std::time::Duration;
 use solana_transaction_status::UiTransactionEncoding;
 
 use anyhow::Result;
@@ -49,19 +48,7 @@ impl SwqosClientTrait for JitoClient {
 impl JitoClient {
     pub fn new(rpc_url: String, endpoint: String, auth_token: String) -> Self {
         let rpc_client = SolanaRpcClient::new(rpc_url);
-        let http_client = Client::builder()
-            // Optimized connection pool settings for high performance
-            .pool_idle_timeout(Duration::from_secs(120))
-            .pool_max_idle_per_host(256)  // Increased from 64 to 256
-            .tcp_keepalive(Some(Duration::from_secs(60)))  // Reduced from 1200 to 60
-            .tcp_nodelay(true)  // Disable Nagle's algorithm for lower latency
-            .http2_keep_alive_interval(Duration::from_secs(10))
-            .http2_keep_alive_timeout(Duration::from_secs(5))
-            .http2_adaptive_window(true)  // Enable adaptive flow control
-            .timeout(Duration::from_millis(3000))  // Reduced from 10s to 3s
-            .connect_timeout(Duration::from_millis(2000))  // Reduced from 5s to 2s
-            .build()
-            .unwrap();
+        let http_client = default_http_client_builder().build().unwrap();
         Self { rpc_client: Arc::new(rpc_client), endpoint, auth_token, http_client }
     }
 

src/swqos/lightspeed.rs

@@ -1,10 +1,9 @@
-use crate::swqos::common::{poll_transaction_confirmation, serialize_transaction_and_encode};
+use crate::swqos::common::{default_http_client_builder, poll_transaction_confirmation, serialize_transaction_and_encode};
 use rand::seq::IndexedRandom;
 use reqwest::Client;
 use serde_json::json;
 use std::{sync::Arc, time::Instant};
 
-use std::time::Duration;
 use solana_transaction_status::UiTransactionEncoding;
 
 use anyhow::Result;
@@ -47,19 +46,7 @@ impl LightspeedClient {
         // Lightspeed endpoint should already include /lightspeed path
         // Format: https://<tier>.rpc.solanavibestation.com/lightspeed?api_key=<key>
         let rpc_client = SolanaRpcClient::new(rpc_url);
-        let http_client = Client::builder()
-            // Optimized connection pool settings for high performance
-            .pool_idle_timeout(Duration::from_secs(120))
-            .pool_max_idle_per_host(256)
-            .tcp_keepalive(Some(Duration::from_secs(60)))
-            .tcp_nodelay(true)  // Disable Nagle's algorithm for lower latency
-            .http2_keep_alive_interval(Duration::from_secs(10))
-            .http2_keep_alive_timeout(Duration::from_secs(5))
-            .http2_adaptive_window(true)  // Enable adaptive flow control
-            .timeout(Duration::from_millis(3000))
-            .connect_timeout(Duration::from_millis(2000))
-            .build()
-            .unwrap();
+        let http_client = default_http_client_builder().build().unwrap();
         Self { rpc_client: Arc::new(rpc_client), endpoint, auth_token, http_client }
     }
 

src/swqos/nextblock.rs

@@ -1,10 +1,9 @@
-use crate::swqos::common::{poll_transaction_confirmation, serialize_transaction_and_encode};
+use crate::swqos::common::{default_http_client_builder, poll_transaction_confirmation, serialize_transaction_and_encode};
 use rand::seq::IndexedRandom;
 use reqwest::Client;
 use serde_json::json;
 use std::{sync::Arc, time::Instant};
 
-use std::time::Duration;
 use solana_transaction_status::UiTransactionEncoding;
 
 use anyhow::Result;
@@ -51,19 +50,7 @@ impl NextBlockClient {
             format!("{}/api/v2/submit", endpoint.trim_end_matches('/'))
         };
         let rpc_client = SolanaRpcClient::new(rpc_url);
-        let http_client = Client::builder()
-            // Optimized connection pool settings for high performance
-            .pool_idle_timeout(Duration::from_secs(120))
-            .pool_max_idle_per_host(256)  // Increased from 64 to 256
-            .tcp_keepalive(Some(Duration::from_secs(60)))  // Reduced from 1200 to 60
-            .tcp_nodelay(true)  // Disable Nagle's algorithm for lower latency
-            .http2_keep_alive_interval(Duration::from_secs(10))
-            .http2_keep_alive_timeout(Duration::from_secs(5))
-            .http2_adaptive_window(true)  // Enable adaptive flow control
-            .timeout(Duration::from_millis(3000))  // Reduced from 10s to 3s
-            .connect_timeout(Duration::from_millis(2000))  // Reduced from 5s to 2s
-            .build()
-            .unwrap();
+        let http_client = default_http_client_builder().build().unwrap();
         Self { rpc_client: Arc::new(rpc_client), endpoint, auth_token, http_client }
     }
 

src/swqos/temporal.rs

@@ -1,5 +1,5 @@
 
-use crate::swqos::common::{poll_transaction_confirmation, serialize_transaction_and_encode};
+use crate::swqos::common::{default_http_client_builder, poll_transaction_confirmation, serialize_transaction_and_encode};
 use rand::seq::IndexedRandom;
 use reqwest::Client;
 use serde_json::json;
@@ -76,19 +76,7 @@ impl SwqosClientTrait for TemporalClient {
 impl TemporalClient {
     pub fn new(rpc_url: String, endpoint: String, auth_token: String) -> Self {
         let rpc_client = SolanaRpcClient::new(rpc_url);
-        let http_client = Client::builder()
-            // Optimized connection pool settings for high performance
-            .pool_idle_timeout(Duration::from_secs(300))
-            .pool_max_idle_per_host(4)
-            .tcp_keepalive(Some(Duration::from_secs(60)))  // Reduced from 1200 to 60
-            .tcp_nodelay(true)  // Disable Nagle's algorithm for lower latency
-            .http2_keep_alive_interval(Duration::from_secs(10))
-            .http2_keep_alive_timeout(Duration::from_secs(5))
-            .http2_adaptive_window(true)  // Enable adaptive flow control
-            .timeout(Duration::from_millis(3000))  // Reduced from 10s to 3s
-            .connect_timeout(Duration::from_millis(2000))  // Reduced from 5s to 2s
-            .build()
-            .unwrap();
+        let http_client = default_http_client_builder().build().unwrap();
         
         let client = Self { 
             rpc_client: Arc::new(rpc_client), 

src/swqos/zeroslot.rs

@@ -1,10 +1,9 @@
-use crate::swqos::common::{poll_transaction_confirmation, serialize_transaction_and_encode};
+use crate::swqos::common::{default_http_client_builder, poll_transaction_confirmation, serialize_transaction_and_encode};
 use rand::seq::IndexedRandom;
 use reqwest::Client;
 use serde_json::json;
 use std::{sync::Arc, time::Instant};
 
-use std::time::Duration;
 use solana_transaction_status::UiTransactionEncoding;
 
 use anyhow::Result;
@@ -46,19 +45,7 @@ impl SwqosClientTrait for ZeroSlotClient {
 impl ZeroSlotClient {
     pub fn new(rpc_url: String, endpoint: String, auth_token: String) -> Self {
         let rpc_client = SolanaRpcClient::new(rpc_url);
-        let http_client = Client::builder()
-            // Optimized connection pool settings for high performance
-            .pool_idle_timeout(Duration::from_secs(120))
-            .pool_max_idle_per_host(256)  // Increased from 64 to 256
-            .tcp_keepalive(Some(Duration::from_secs(60)))  // Reduced from 1200 to 60
-            .tcp_nodelay(true)  // Disable Nagle's algorithm for lower latency
-            .http2_keep_alive_interval(Duration::from_secs(10))
-            .http2_keep_alive_timeout(Duration::from_secs(5))
-            .http2_adaptive_window(true)  // Enable adaptive flow control
-            .timeout(Duration::from_millis(3000))  // Reduced from 10s to 3s
-            .connect_timeout(Duration::from_millis(2000))  // Reduced from 5s to 2s
-            .build()
-            .unwrap();
+        let http_client = default_http_client_builder().build().unwrap();
         Self { rpc_client: Arc::new(rpc_client), endpoint, auth_token, http_client }
     }