Better message.

cincuranet · cincuranet · commit 8eb49da4c9be · 2018-05-23T14:16:35.000+02:00
diff --git a/Provider/src/FirebirdSql.Data.FirebirdClient/Client/Managed/XdrStream.cs b/Provider/src/FirebirdSql.Data.FirebirdClient/Client/Managed/XdrStream.cs
@@ -643,7 +643,7 @@ public void WriteBlobBuffer(byte[] buffer)
 		{
 			var length = buffer.Length; // 2 for short for buffer length
 			if (length > short.MaxValue)
-				throw new IOException();
+				throw new IOException("Blob buffer too big.");
 			Write(length + 2);
 			Write(length + 2);  //bizarre but true! three copies of the length
 			WriteByte((byte)((length >> 0) & 0xff));

Original file line number	Diff line number	Diff line change
`@@ -643,7 +643,7 @@ public void WriteBlobBuffer(byte[] buffer)`
`643`	`643`	`{`
`644`	`644`	`var length = buffer.Length; // 2 for short for buffer length`
`645`	`645`	`if (length > short.MaxValue)`
`646`		`- throw new IOException();`
	`646`	`+ throw new IOException("Blob buffer too big.");`
`647`	`647`	`Write(length + 2);`
`648`	`648`	`Write(length + 2); //bizarre but true! three copies of the length`
`649`	`649`	`WriteByte((byte)((length >> 0) & 0xff));`