| private GetResponse ( byte buffer, int max ) : int | ||
| buffer | byte | |
| max | int | |
| return | int | |
int GetResponse (byte [] buffer, int max)
{
int pos = 0;
string line = null;
bool lineok = false;
bool isContinue = false;
bool emptyFirstLine = false;
do {
if (readState == ReadState.None) {
lineok = ReadLine (buffer, ref pos, max, ref line);
if (!lineok)
return -1;
if (line == null) {
emptyFirstLine = true;
continue;
}
emptyFirstLine = false;
readState = ReadState.Status;
string [] parts = line.Split (' ');
if (parts.Length < 2)
return -1;
if (String.Compare (parts [0], "HTTP/1.1", true) == 0) {
Data.Version = HttpVersion.Version11;
sPoint.SetVersion (HttpVersion.Version11);
} else {
Data.Version = HttpVersion.Version10;
sPoint.SetVersion (HttpVersion.Version10);
}
Data.StatusCode = (int) UInt32.Parse (parts [1]);
if (parts.Length >= 3)
Data.StatusDescription = String.Join (" ", parts, 2, parts.Length - 2);
else
Data.StatusDescription = "";
if (pos >= max)
return pos;
}
emptyFirstLine = false;
if (readState == ReadState.Status) {
readState = ReadState.Headers;
Data.Headers = new WebHeaderCollection ();
ArrayList headers = new ArrayList ();
bool finished = false;
while (!finished) {
if (ReadLine (buffer, ref pos, max, ref line) == false)
break;
if (line == null) {
// Empty line: end of headers
finished = true;
continue;
}
if (line.Length > 0 && (line [0] == ' ' || line [0] == '\t')) {
int count = headers.Count - 1;
if (count < 0)
break;
string prev = (string) headers [count] + line;
headers [count] = prev;
} else {
headers.Add (line);
}
}
if (!finished)
return -1;
foreach (string s in headers)
Data.Headers.SetInternal (s);
if (Data.StatusCode == (int) HttpStatusCode.Continue) {
sPoint.SendContinue = true;
if (pos >= max)
return pos;
if (Data.request.ExpectContinue) {
Data.request.DoContinueDelegate (Data.StatusCode, Data.Headers);
// Prevent double calls when getting the
// headers in several packets.
Data.request.ExpectContinue = false;
}
readState = ReadState.None;
isContinue = true;
}
else {
readState = ReadState.Content;
return pos;
}
}
} while (emptyFirstLine || isContinue);
return -1;
}
private static void ReadDone(IAsyncResult result)
{
WebConnection webConnection = (WebConnection)result.AsyncState;
WebConnectionData data = webConnection.Data;
Stream stream = webConnection.nstream;
if (stream == null)
{
webConnection.Close(sendNext: true);
return;
}
int num = -1;
try
{
num = stream.EndRead(result);
}
catch (Exception e)
{
webConnection.HandleError(WebExceptionStatus.ReceiveFailure, e, "ReadDone1");
return;
IL_004c :;
}
if (num == 0)
{
webConnection.HandleError(WebExceptionStatus.ReceiveFailure, null, "ReadDone2");
return;
}
if (num < 0)
{
webConnection.HandleError(WebExceptionStatus.ServerProtocolViolation, null, "ReadDone3");
return;
}
int num2 = -1;
num += webConnection.position;
if (webConnection.readState == ReadState.None)
{
Exception ex = null;
try
{
num2 = webConnection.GetResponse(webConnection.buffer, num);
}
catch (Exception ex2)
{
ex = ex2;
}
if (ex != null)
{
webConnection.HandleError(WebExceptionStatus.ServerProtocolViolation, ex, "ReadDone4");
return;
}
}
if (webConnection.readState != ReadState.Content)
{
int num3 = num * 2;
int num4 = (num3 >= webConnection.buffer.Length) ? num3 : webConnection.buffer.Length;
byte[] dst = new byte[num4];
Buffer.BlockCopy(webConnection.buffer, 0, dst, 0, num);
webConnection.buffer = dst;
webConnection.position = num;
webConnection.readState = ReadState.None;
InitRead(webConnection);
return;
}
webConnection.position = 0;
WebConnectionStream webConnectionStream = new WebConnectionStream(webConnection);
string text = data.Headers["Transfer-Encoding"];
webConnection.chunkedRead = (text != null && text.ToLower().IndexOf("chunked") != -1);
if (!webConnection.chunkedRead)
{
webConnectionStream.ReadBuffer = webConnection.buffer;
webConnectionStream.ReadBufferOffset = num2;
webConnectionStream.ReadBufferSize = num;
webConnectionStream.CheckResponseInBuffer();
}
else if (webConnection.chunkStream == null)
{
try
{
webConnection.chunkStream = new ChunkStream(webConnection.buffer, num2, num, data.Headers);
}
catch (Exception e2)
{
webConnection.HandleError(WebExceptionStatus.ServerProtocolViolation, e2, "ReadDone5");
return;
IL_01ef :;
}
}
else
{
webConnection.chunkStream.ResetBuffer();
try
{
webConnection.chunkStream.Write(webConnection.buffer, num2, num);
}
catch (Exception e3)
{
webConnection.HandleError(WebExceptionStatus.ServerProtocolViolation, e3, "ReadDone6");
return;
IL_0233 :;
}
}
data.stream = webConnectionStream;
if (!ExpectContent(data.StatusCode) || data.request.Method == "HEAD")
{
webConnectionStream.ForceCompletion();
}
data.request.SetResponseData(data);
}