cleanup/nullable-ize FixValues, Session, DataDict, DataDictProvider, Message, MessageCracker, SocketSettings, SslStreamFactory

QuickFIXn/DataDictionaryProvider.cs

@@ -4,49 +4,43 @@ namespace QuickFix
 {
     public class DataDictionaryProvider
     {
-        private Dictionary<string, DataDictionary.DataDictionary> transportDataDictionaries_;
-        private Dictionary<string, DataDictionary.DataDictionary> applicationDataDictionaries_;
-        private DataDictionary.DataDictionary emptyDataDictionary_;
+        private readonly Dictionary<string, DataDictionary.DataDictionary> _transportDataDictionaries;
+        private readonly Dictionary<string, DataDictionary.DataDictionary> _applicationDataDictionaries;
+        private readonly DataDictionary.DataDictionary _emptyDataDictionary;
 
         public DataDictionaryProvider()
         {
-            transportDataDictionaries_ = new Dictionary<string, DataDictionary.DataDictionary>();
-            applicationDataDictionaries_ = new Dictionary<string, DataDictionary.DataDictionary>();
-            emptyDataDictionary_ = new DataDictionary.DataDictionary();
+            _transportDataDictionaries = new Dictionary<string, DataDictionary.DataDictionary>();
+            _applicationDataDictionaries = new Dictionary<string, DataDictionary.DataDictionary>();
+            _emptyDataDictionary = new DataDictionary.DataDictionary();
         }
 
         /// TODO need to make deeper copy?
         public DataDictionaryProvider(DataDictionaryProvider src)
         {
-            transportDataDictionaries_ = new Dictionary<string, DataDictionary.DataDictionary>(src.transportDataDictionaries_);
-            applicationDataDictionaries_ = new Dictionary<string, DataDictionary.DataDictionary>(src.applicationDataDictionaries_);
-            emptyDataDictionary_ = new DataDictionary.DataDictionary(src.emptyDataDictionary_);
+            _transportDataDictionaries = new Dictionary<string, DataDictionary.DataDictionary>(src._transportDataDictionaries);
+            _applicationDataDictionaries = new Dictionary<string, DataDictionary.DataDictionary>(src._applicationDataDictionaries);
+            _emptyDataDictionary = new DataDictionary.DataDictionary(src._emptyDataDictionary);
         }
 
         public void AddTransportDataDictionary(string beginString, DataDictionary.DataDictionary dataDictionary)
         {
-            transportDataDictionaries_[beginString] = dataDictionary;
+            _transportDataDictionaries[beginString] = dataDictionary;
         }
 
-        public void AddApplicationDataDictionary(string applVerID, DataDictionary.DataDictionary dataDictionary)
+        public void AddApplicationDataDictionary(string applVerId, DataDictionary.DataDictionary dataDictionary)
         {
-            applicationDataDictionaries_[applVerID] = dataDictionary;
+            _applicationDataDictionaries[applVerId] = dataDictionary;
         }
 
         public DataDictionary.DataDictionary GetSessionDataDictionary(string beginString)
         {
-            DataDictionary.DataDictionary dd;
-            if (!transportDataDictionaries_.TryGetValue(beginString, out dd))
-                return emptyDataDictionary_;
-            return dd;
+            return _transportDataDictionaries.GetValueOrDefault(beginString, _emptyDataDictionary);
         }
 
-        public DataDictionary.DataDictionary GetApplicationDataDictionary(string applVerID)
+        public DataDictionary.DataDictionary GetApplicationDataDictionary(string applVerId)
         {
-            DataDictionary.DataDictionary dd;
-            if (!applicationDataDictionaries_.TryGetValue(applVerID, out dd))
-                return emptyDataDictionary_;
-            return dd;
+            return _applicationDataDictionaries.GetValueOrDefault(applVerId, _emptyDataDictionary);
         }
     }
 }

QuickFIXn/FixValue.cs

@@ -0,0 +1,33 @@
+namespace QuickFix;
+
+public class FixValue<T> where T : notnull
+{
+    private T _value;
+
+    public T Value => _value;
+    public string Description { get; }
+
+    public FixValue(T value, string description)
+    {
+        _value = value;
+        Description = description;
+    }
+
+    public override bool Equals(object? obj)
+    {
+        if (obj is null || (this.GetType() != obj.GetType()))
+            return false;
+        FixValue<T> rhs = (FixValue<T>)obj;
+        return this.Value.Equals(rhs.Value);
+    }
+
+    public override int GetHashCode()
+    {
+        return _value.GetHashCode();
+    }
+
+    public override string ToString()
+    {
+        return Description;
+    }
+}

QuickFIXn/FixValues/ApplVerID.cs

@@ -0,0 +1,45 @@
+namespace QuickFix.FixValues;
+
+public static class ApplVerID
+{
+    public const string FIX40 = "2";
+    public const string FIX41 = "3";
+    public const string FIX42 = "4";
+    public const string FIX43 = "5";
+    public const string FIX44 = "6";
+    public const string FIX50 = "7";
+    public const string FIX50SP1 = "8";
+    public const string FIX50SP2 = "9";
+
+    public static string FromBeginString(string beginString)
+    {
+        return beginString switch
+        {
+            BeginString.FIX40 => FIX40,
+            BeginString.FIX41 => FIX41,
+            BeginString.FIX42 => FIX42,
+            BeginString.FIX43 => FIX43,
+            BeginString.FIX44 => FIX44,
+            BeginString.FIX50 => FIX50,
+            BeginString.FIX50SP1 => FIX50SP1,
+            BeginString.FIX50SP2 => FIX50SP2,
+            _ => beginString
+        };
+    }
+
+    public static string ToBeginString(string applVerId) {
+        return applVerId switch
+        {
+            FIX40 => BeginString.FIX40,
+            FIX41 => BeginString.FIX41,
+            FIX42 => BeginString.FIX42,
+            FIX43 => BeginString.FIX43,
+            FIX44 => BeginString.FIX44,
+            FIX50 => BeginString.FIX50,
+            FIX50SP1 => BeginString.FIX50SP1,
+            FIX50SP2 => BeginString.FIX50SP2,
+            _ => throw new System.ArgumentException(
+                $"ApplVerId parameter '{applVerId}' does not map to a known BeginString")
+        };
+    }
+}

QuickFIXn/FixValues/BeginString.cs

@@ -0,0 +1,16 @@
+namespace QuickFix.FixValues;
+
+public static class BeginString
+{
+    // The FIX5+ beginstrings aren't legitimate, but we use them internally.
+
+    public const string FIXT11 = "FIXT.1.1";
+    public const string FIX50SP2 = "FIX.5.0SP2";
+    public const string FIX50SP1 = "FIX.5.0SP1";
+    public const string FIX50  = "FIX.5.0";
+    public const string FIX44  = "FIX.4.4";
+    public const string FIX43  = "FIX.4.3";
+    public const string FIX42  = "FIX.4.2";
+    public const string FIX41  = "FIX.4.1";
+    public const string FIX40  = "FIX.4.0";
+}

QuickFIXn/FixValues/BusinessRejectReason.cs

@@ -0,0 +1,18 @@
+using System.Collections.Generic;
+
+namespace QuickFix.FixValues;
+
+public class BusinessRejectReason
+{
+    public static readonly Dictionary<int, string> RejText = new()
+    {
+        { Fields.BusinessRejectReason.OTHER, "Other" },
+        { Fields.BusinessRejectReason.UNKNOWN_ID, "Unknown ID" },
+        { Fields.BusinessRejectReason.UNKNOWN_SECURITY, "Unknown Security" },
+        { Fields.BusinessRejectReason.UNKNOWN_MESSAGE_TYPE, "Unsupported Message Type" },
+        { Fields.BusinessRejectReason.APPLICATION_NOT_AVAILABLE, "Application Not Available" },
+        { Fields.BusinessRejectReason.CONDITIONALLY_REQUIRED_FIELD_MISSING, "Conditionally Required Field Missing" },
+        { Fields.BusinessRejectReason.NOT_AUTHORIZED, "Not authorized" },
+        { Fields.BusinessRejectReason.DELIVERTO_FIRM_NOT_AVAILABLE_AT_THIS_TIME, "DeliverTo Firm Not Available At This Time" }
+    };
+}

QuickFIXn/FixValues/SessionRejectReason.cs

@@ -0,0 +1,28 @@
+namespace QuickFix.FixValues;
+
+public class SessionRejectReason : FixValue<int>
+{
+    public static SessionRejectReason INVALID_TAG_NUMBER = new(0, "Invalid tag number");
+    public static SessionRejectReason REQUIRED_TAG_MISSING = new(1, "Required tag missing");
+    public static SessionRejectReason TAG_NOT_DEFINED_FOR_THIS_MESSAGE_TYPE = new(2, "Tag not defined for this message type");
+    public static SessionRejectReason UNDEFINED_TAG = new(3, "Undefined Tag");
+    public static SessionRejectReason TAG_SPECIFIED_WITHOUT_A_VALUE = new(4, "Tag specified without a value");
+    public static SessionRejectReason VALUE_IS_INCORRECT = new(5, "Value is incorrect (out of range) for this tag");
+    public static SessionRejectReason INCORRECT_DATA_FORMAT_FOR_VALUE = new(6, "Incorrect data format for value");
+    public static SessionRejectReason DECRYPTION_PROBLEM = new(7, "Decryption problem");
+    public static SessionRejectReason SIGNATURE_PROBLEM = new(8, "Signature problem");
+    public static SessionRejectReason COMPID_PROBLEM = new(9, "CompID problem");
+    public static SessionRejectReason SENDING_TIME_ACCURACY_PROBLEM = new(10, "SendingTime accuracy problem");
+    public static SessionRejectReason INVALID_MSGTYPE = new(11, "Invalid MsgType");
+    public static SessionRejectReason XML_VALIDATION_ERROR = new(12, "XML validation error");
+    public static SessionRejectReason TAG_APPEARS_MORE_THAN_ONCE = new(13, "Tag appears more than once");
+    public static SessionRejectReason TAG_SPECIFIED_OUT_OF_REQUIRED_ORDER = new(14, "Tag specified out of required order");
+    public static SessionRejectReason REPEATING_GROUP_FIELDS_OUT_OF_ORDER = new(15, "Repeating group fields out of order");
+    public static SessionRejectReason INCORRECT_NUM_IN_GROUP_COUNT_FOR_REPEATING_GROUP = new(16, "Incorrect NumInGroup count for repeating group");
+    public static SessionRejectReason NON_DATA_VALUE_INCLUDES_FIELD_DELIMITER = new(17, "Non-data value includes field delimiter");
+    public static SessionRejectReason OTHER = new(99, "Other");
+
+    public SessionRejectReason(int value, string description)
+        : base(value, description)
+    { }
+}