private void ReadHttpHeaders()
{
string line = this.ReadLine();
int index1 = line.IndexOf(' ');
if ((index1 <= 0) || ((line.Length - 3) <= index1))
{
throw Error.BatchStreamInvalidMethodHeaderSpecified(line);
}
int index2 = (this.batchRequest ? line.LastIndexOf(' ') : line.IndexOf(' ', index1 + 1));
if ((index2 < 0) || (index2 - index1 - 1 <= 0) || ((line.Length - 1) <= index2))
{
throw Error.BatchStreamInvalidMethodHeaderSpecified(line);
}
string segment1 = line.Substring(0, index1);
string segment2 = line.Substring(index1 + 1, index2 - index1 - 1);
string segment3 = line.Substring(index2 + 1);
#region validate HttpVersion
string httpVersion = this.batchRequest ? segment3 : segment1;
if (httpVersion != XmlConstants.HttpVersionInBatching)
{
throw Error.BatchStreamInvalidHttpVersionSpecified(httpVersion, XmlConstants.HttpVersionInBatching);
}
#endregion
this.ReadContentHeaders();
BatchStreamState state;
if (this.batchRequest)
{
state = GetStateBasedOnHttpMethodName(segment1);
}
else
{
state = (BatchStreamState.EndBatch == this.batchState) ? BatchStreamState.GetResponse : BatchStreamState.ChangeResponse;
this.statusCode = segment2;
}
#region validate state change
Debug.Assert(
BatchStreamState.EndBatch == this.batchState ||
BatchStreamState.EndChangeSet == this.batchState,
"unexpected BatchStreamState");
if (this.batchState == BatchStreamState.EndBatch)
{
if ((this.batchRequest && (state == BatchStreamState.Get)) ||
(!this.batchRequest && (state == BatchStreamState.GetResponse)))
{
this.batchState = state;
}
else
{
throw Error.BatchStreamOnlyGETOperationsCanBeSpecifiedInBatch();
}
}
else if (this.batchState == BatchStreamState.EndChangeSet)
{
if ((this.batchRequest && ((BatchStreamState.Post == state) || (BatchStreamState.Put == state) || (BatchStreamState.Delete == state) || (BatchStreamState.Merge == state))) ||
(!this.batchRequest && (state == BatchStreamState.ChangeResponse)))
{
this.batchState = state;
}
else
{
this.batchState = BatchStreamState.Post;
throw Error.BatchStreamGetMethodNotSupportInChangeset();
}
}
else
{
throw Error.BatchStreamInvalidOperationHeaderSpecified();
}
#endregion
}