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JNFrame/Assets/Game/Plugins/Best HTTP/Source/HTTPRange.cs

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+using System;
+
+namespace BestHTTP
+{
+    /// <summary>
+    ///
+    /// </summary>
+    public sealed class HTTPRange
+    {
+        /// <summary>
+        /// The first byte's position that the server sent.
+        /// </summary>
+        public long FirstBytePos { get; private set; }
+
+        /// <summary>
+        /// The last byte's position that the server sent.
+        /// </summary>
+        public long LastBytePos { get; private set; }
+
+        /// <summary>
+        /// Indicates the total length of the full entity-body on the server, -1 if this length is unknown or difficult to determine.
+        /// </summary>
+        public long ContentLength { get; private set; }
+
+        /// <summary>
+        ///
+        /// </summary>
+        public bool IsValid { get; private set; }
+
+        internal HTTPRange()
+        {
+            this.ContentLength = -1;
+            this.IsValid = false;
+        }
+
+        internal HTTPRange(int contentLength)
+        {
+            this.ContentLength = contentLength;
+            this.IsValid = false;
+        }
+
+        internal HTTPRange(long firstBytePosition, long lastBytePosition, long contentLength)
+        {
+            this.FirstBytePos = firstBytePosition;
+            this.LastBytePos = lastBytePosition;
+            this.ContentLength = contentLength;
+
+            // A byte-content-range-spec with a byte-range-resp-spec whose last-byte-pos value is less than its first-byte-pos value, or whose instance-length value is less than or equal to its last-byte-pos value, is invalid.
+            this.IsValid = this.FirstBytePos <= this.LastBytePos && this.ContentLength > this.LastBytePos;
+        }
+
+        public override string ToString()
+        {
+            return string.Format("{0}-{1}/{2} (valid: {3})", FirstBytePos, LastBytePos, ContentLength, IsValid);
+        }
+    }
+}