Added Jupiter PrioritieFees parameter and MaxLamports configuration.

src/Solana.Unity.Dex/Jupiter/Core/Types/Http/SwapRequest.cs

@@ -53,4 +53,37 @@ public class SwapRequest
     /// Is this a legacy transaction
     /// </summary>
     public bool AsLegacyTransaction { get; set; }
+
+    /// <summary>
+    /// To specify a level or amount of additional fees to prioritize the transaction
+    /// It can be used for both priority fee and jito tip
+    /// </summary>
+    public PrioritizationFeeLamportsContainer PrioritizationFeeLamports { get; set; }
+}
+
+/// <summary>
+/// Represents prioritization fee settings
+/// </summary>
+public class PrioritizationFeeLamportsContainer
+{
+    /// <summary>
+    /// Represents the max Lamports and priority level
+    /// </summary>
+    public PriorityLevelWithMaxLamports PriorityLevelWithMaxLamports { get; set; }
+}
+
+/// <summary>
+/// Represents the max Lamports and priority level
+/// </summary>
+public class PriorityLevelWithMaxLamports
+{
+    /// <summary>
+    /// Maximum lamports to cap the priority fee estimation, to prevent overpaying
+    /// </summary>
+    public ulong MaxLamports { get; set; }
+
+    /// <summary>
+    /// Either medium, high or veryHigh
+    /// </summary>
+    public string PriorityLevel { get; set; }  // Example: "veryHigh"
 }

src/Solana.Unity.Dex/Jupiter/JupiterDex.cs

@@ -23,7 +23,7 @@
 /// <summary>
 /// Concrete implementation of IDexAggregator for Jupiter Aggregator. 
 /// </summary>
 public class JupiterDexAg: IDexAggregator
 {
     private readonly PublicKey _account;
     private readonly string _endpoint;
@@ -136,13 +136,27 @@
         bool useSharedAccounts = true, 
         PublicKey feeAccount = null,
         BigInteger? computeUnitPriceMicroLamports = null,
-        bool useTokenLedger = false)
+        bool useTokenLedger = false,
+        ulong maxLamports = 1_400_000,
+        string priorityLevel = "medium"
+        )
     {
         userPublicKey ??= _account;
 
         // Construct the request URL
         var apiUrl = _endpoint + "/swap";
 
+        var priorityLevelObject = new PriorityLevelWithMaxLamports()
+        {
+            MaxLamports = maxLamports,
+            PriorityLevel = priorityLevel
+        };
+
+        var prioritizationFeePart = new PrioritizationFeeLamportsContainer()
+        {
+            PriorityLevelWithMaxLamports = priorityLevelObject
+        };
+
         var req = new SwapRequest()
         {
             QuoteResponse = quoteResponse,
@@ -153,7 +167,8 @@
             FeeAccount = feeAccount,
             ComputeUnitPriceMicroLamports = computeUnitPriceMicroLamports,
             UseTokenLedger = useTokenLedger,
-            AsLegacyTransaction = false
+            AsLegacyTransaction = false,
+            PrioritizationFeeLamports = prioritizationFeePart
         };
 
         var requestJson = JsonConvert.SerializeObject(req, _serializerOptions);