Fix http client buffer (#15)

* only read headers into memory

* set infinite timeout for httpclient for soapRequests

* use unix slash for path

* remove superfluous tostring

* bugFix: increment transaction before writing, not after

CORESubscriber/Changelog.cs

@@ -83,9 +83,11 @@ private static void DoTransactions(FileInfo fileInfo)
 
         private static void PrepareAndSendTransaction(XElement transaction)
         {
-            if (Dataset.GetTransaction() > Transaction)
+            var abortedTransaction = Dataset.GetTransaction();
+
+            if (abortedTransaction > Transaction)
             {
-                Console.WriteLine("Transaction already run. Skipping");
+                Console.WriteLine($"Transaction {Transaction} is lower than abortedTransaction ({abortedTransaction}). Skipping");
 
                 Transaction++;
 
@@ -94,7 +96,9 @@ private static void PrepareAndSendTransaction(XElement transaction)
 
             Send(SetTransactionValues(transaction));
 
-            Dataset.SetTransaction(Transaction++.ToString());
+            Transaction++;
+
+            Dataset.SetTransaction(Transaction.ToString());
         }
 
         private static XDocument SetTransactionValues(XElement transaction)