/// <summary>
/// Receive and parse the http response from server
/// </summary>
/// <returns></returns>
internal async Task ReceiveResponse()
{
//return if this is already read
if (Response.StatusCode != 0)
{
return;
}
string httpStatus = await ServerConnection.StreamReader.ReadLineAsync();
if (httpStatus == null)
{
throw new IOException();
}
if (httpStatus == string.Empty)
{
//Empty content in first-line, try again
httpStatus = await ServerConnection.StreamReader.ReadLineAsync();
}
Response.ParseResponseLine(httpStatus, out var version, out int statusCode, out string statusDescription);
Response.HttpVersion = version;
Response.StatusCode = statusCode;
Response.StatusDescription = statusDescription;
//For HTTP 1.1 comptibility server may send expect-continue even if not asked for it in request
if (Response.StatusCode == (int)HttpStatusCode.Continue &&
Response.StatusDescription.Equals("continue", StringComparison.CurrentCultureIgnoreCase))
{
//Read the next line after 100-continue
Response.Is100Continue = true;
Response.StatusCode = 0;
await ServerConnection.StreamReader.ReadLineAsync();
//now receive response
await ReceiveResponse();
return;
}
if (Response.StatusCode == (int)HttpStatusCode.ExpectationFailed &&
Response.StatusDescription.Equals("expectation failed", StringComparison.CurrentCultureIgnoreCase))
{
//read next line after expectation failed response
Response.ExpectationFailed = true;
Response.StatusCode = 0;
await ServerConnection.StreamReader.ReadLineAsync();
//now receive response
await ReceiveResponse();
return;
}
//Read the response headers in to unique and non-unique header collections
await HeaderParser.ReadHeaders(ServerConnection.StreamReader, Response.Headers);
}
/// <summary>
/// Receive and parse the http response from server
/// </summary>
/// <returns></returns>
internal async Task ReceiveResponse(CancellationToken cancellationToken)
{
// return if this is already read
if (Response.StatusCode != 0)
{
return;
}
var httpStatus = await Connection.Stream.ReadResponseStatus(cancellationToken);
Response.HttpVersion = httpStatus.Version;
Response.StatusCode = httpStatus.StatusCode;
Response.StatusDescription = httpStatus.Description;
// Read the response headers in to unique and non-unique header collections
await HeaderParser.ReadHeaders(Connection.Stream, Response.Headers, cancellationToken);
}
/// <summary>
/// Receive and parse the http response from server
/// </summary>
/// <returns></returns>
internal async Task ReceiveResponse(CancellationToken cancellationToken)
{
// return if this is already read
if (Response.StatusCode != 0)
{
return;
}
string httpStatus;
try
{
httpStatus = await Connection.Stream.ReadLineAsync(cancellationToken);
if (httpStatus == null)
{
throw new ServerConnectionException("Server connection was closed.");
}
}
catch (Exception e) when(!(e is ServerConnectionException))
{
throw new ServerConnectionException("Server connection was closed.");
}
if (httpStatus == string.Empty)
{
httpStatus = await Connection.Stream.ReadLineAsync(cancellationToken);
}
Response.ParseResponseLine(httpStatus, out var version, out int statusCode, out string statusDescription);
Response.HttpVersion = version;
Response.StatusCode = statusCode;
Response.StatusDescription = statusDescription;
// Read the response headers in to unique and non-unique header collections
await HeaderParser.ReadHeaders(Connection.Stream, Response.Headers, cancellationToken);
}
/// <summary>
/// Receive and parse the http response from server
/// </summary>
/// <returns></returns>
internal async Task ReceiveResponse(CancellationToken cancellationToken)
{
// return if this is already read
if (Response.StatusCode != 0)
{
return;
}
string httpStatus;
try
{
httpStatus = await ServerConnection.Stream.ReadLineAsync(cancellationToken);
if (httpStatus == null)
{
throw new ServerConnectionException("Server connection was closed.");
}
}
catch (Exception e) when(!(e is ServerConnectionException))
{
throw new ServerConnectionException("Server connection was closed.");
}
if (httpStatus == string.Empty)
{
httpStatus = await ServerConnection.Stream.ReadLineAsync(cancellationToken);
}
Version version;
int statusCode;
string statusDescription;
Response.ParseResponseLine(httpStatus, out version, out statusCode, out statusDescription);
Response.HttpVersion = version;
Response.StatusCode = statusCode;
Response.StatusDescription = statusDescription;
// For HTTP 1.1 comptibility server may send expect-continue even if not asked for it in request
if (Response.StatusCode == (int)HttpStatusCode.Continue &&
Response.StatusDescription.EqualsIgnoreCase("continue"))
{
// Read the next line after 100-continue
Response.Is100Continue = true;
Response.StatusCode = 0;
await ServerConnection.Stream.ReadLineAsync(cancellationToken);
// now receive response
await ReceiveResponse(cancellationToken);
return;
}
if (Response.StatusCode == (int)HttpStatusCode.ExpectationFailed &&
Response.StatusDescription.EqualsIgnoreCase("expectation failed"))
{
// read next line after expectation failed response
Response.ExpectationFailed = true;
Response.StatusCode = 0;
await ServerConnection.Stream.ReadLineAsync(cancellationToken);
// now receive response
await ReceiveResponse(cancellationToken);
return;
}
// Read the response headers in to unique and non-unique header collections
await HeaderParser.ReadHeaders(ServerConnection.Stream, Response.Headers, cancellationToken);
}
/// <summary>
/// Receive and parse the http response from server
/// </summary>
/// <returns></returns>
internal async Task ReceiveResponse()
{
//return if this is already read
if (Response.ResponseStatusCode != null)
{
return;
}
string line = await ServerConnection.StreamReader.ReadLineAsync();
if (line == null)
{
throw new IOException();
}
var httpResult = line.Split(ProxyConstants.SpaceSplit, 3);
if (string.IsNullOrEmpty(httpResult[0]))
{
//Empty content in first-line, try again
httpResult = (await ServerConnection.StreamReader.ReadLineAsync()).Split(ProxyConstants.SpaceSplit, 3);
}
var httpVersion = httpResult[0];
var version = HttpHeader.Version11;
if (string.Equals(httpVersion, "HTTP/1.0", StringComparison.OrdinalIgnoreCase))
{
version = HttpHeader.Version10;
}
Response.HttpVersion = version;
Response.ResponseStatusCode = httpResult[1].Trim();
Response.ResponseStatusDescription = httpResult[2].Trim();
//For HTTP 1.1 comptibility server may send expect-continue even if not asked for it in request
if (Response.ResponseStatusCode.Equals("100") &&
Response.ResponseStatusDescription.Equals("continue", StringComparison.CurrentCultureIgnoreCase))
{
//Read the next line after 100-continue
Response.Is100Continue = true;
Response.ResponseStatusCode = null;
await ServerConnection.StreamReader.ReadLineAsync();
//now receive response
await ReceiveResponse();
return;
}
if (Response.ResponseStatusCode.Equals("417") &&
Response.ResponseStatusDescription.Equals("expectation failed", StringComparison.CurrentCultureIgnoreCase))
{
//read next line after expectation failed response
Response.ExpectationFailed = true;
Response.ResponseStatusCode = null;
await ServerConnection.StreamReader.ReadLineAsync();
//now receive response
await ReceiveResponse();
return;
}
//Read the response headers in to unique and non-unique header collections
await HeaderParser.ReadHeaders(ServerConnection.StreamReader, Response.NonUniqueResponseHeaders, Response.ResponseHeaders);
}
