internal void SendHeaders(bool closing, MemoryStream ms)
{
Encoding encoding = content_encoding;
if (encoding == null)
{
encoding = Encoding.Default;
}
if (content_type != null)
{
if (content_encoding != null && content_type.IndexOf("charset=", StringComparison.Ordinal) == -1)
{
string enc_name = content_encoding.WebName;
headers.SetInternal("Content-Type", content_type + "; charset=" + enc_name);
}
else
{
headers.SetInternal("Content-Type", content_type);
}
}
if (headers ["Server"] == null)
{
headers.SetInternal("Server", "Mono-HTTPAPI/1.0");
}
CultureInfo inv = CultureInfo.InvariantCulture;
if (headers ["Date"] == null)
{
headers.SetInternal("Date", DateTime.UtcNow.ToString("r", inv));
}
if (!chunked)
{
if (!cl_set && closing)
{
cl_set = true;
content_length = 0;
}
if (cl_set)
{
headers.SetInternal("Content-Length", content_length.ToString(inv));
}
}
Version v = context.Request.ProtocolVersion;
if (!cl_set && !chunked && v >= HttpVersion.Version11)
{
chunked = true;
}
/* Apache forces closing the connection for these status codes:
* HttpStatusCode.BadRequest 400
* HttpStatusCode.RequestTimeout 408
* HttpStatusCode.LengthRequired 411
* HttpStatusCode.RequestEntityTooLarge 413
* HttpStatusCode.RequestUriTooLong 414
* HttpStatusCode.InternalServerError 500
* HttpStatusCode.ServiceUnavailable 503
*/
bool conn_close = (status_code == 400 || status_code == 408 || status_code == 411 ||
status_code == 413 || status_code == 414 || status_code == 500 ||
status_code == 503);
if (conn_close == false)
{
conn_close = !context.Request.KeepAlive;
}
// They sent both KeepAlive: true and Connection: close!?
if (!keep_alive || conn_close)
{
headers.SetInternal("Connection", "close");
conn_close = true;
}
if (chunked)
{
headers.SetInternal("Transfer-Encoding", "chunked");
}
int reuses = context.Connection.Reuses;
if (reuses >= 100)
{
force_close_chunked = true;
if (!conn_close)
{
headers.SetInternal("Connection", "close");
conn_close = true;
}
}
if (!conn_close)
{
headers.SetInternal("Keep-Alive", String.Format("timeout=15,max={0}", 100 - reuses));
if (context.Request.ProtocolVersion <= HttpVersion.Version10)
{
headers.SetInternal("Connection", "keep-alive");
}
}
if (location != null)
{
headers.SetInternal("Location", location);
}
if (cookies != null)
{
foreach (Cookie cookie in cookies)
{
headers.SetInternal("Set-Cookie", cookie.ToClientString());
}
}
StreamWriter writer = new StreamWriter(ms, encoding, 256);
writer.Write("HTTP/{0} {1} {2}\r\n", version, status_code, status_description);
string headers_str = headers.ToStringMultiValue();
writer.Write(headers_str);
writer.Flush();
int preamble = (encoding.CodePage == 65001) ? 3 : encoding.GetPreamble().Length;
if (output_stream == null)
{
output_stream = context.Connection.GetResponseStream();
}
/* Assumes that the ms was at position 0 */
ms.Position = preamble;
HeadersSent = true;
}
internal void AddHeader(string header)
{
int colon = header.IndexOf(':');
if (colon == -1 || colon == 0)
{
context.ErrorMessage = "Bad Request";
context.ErrorStatus = 400;
return;
}
string name = header.Substring(0, colon).Trim();
string val = header.Substring(colon + 1).Trim();
string lower = name.ToLower(CultureInfo.InvariantCulture);
headers.SetInternal(name, val);
switch (lower)
{
case "accept-language":
user_languages = val.Split(','); // yes, only split with a ','
break;
case "accept":
accept_types = val.Split(','); // yes, only split with a ','
break;
case "content-length":
try {
//TODO: max. content_length?
content_length = Int64.Parse(val.Trim());
if (content_length < 0)
{
context.ErrorMessage = "Invalid Content-Length.";
}
cl_set = true;
} catch {
context.ErrorMessage = "Invalid Content-Length.";
}
break;
case "referer":
try {
referrer = new Uri(val);
} catch {
referrer = new Uri("http://someone.is.screwing.with.the.headers.com/");
}
break;
case "cookie":
if (cookies == null)
{
cookies = new CookieCollection();
}
string[] cookieStrings = val.Split(new char[] { ',', ';' });
Cookie current = null;
int version = 0;
foreach (string cookieString in cookieStrings)
{
string str = cookieString.Trim();
if (str.Length == 0)
{
continue;
}
if (str.StartsWith("$Version"))
{
version = Int32.Parse(Unquote(str.Substring(str.IndexOf('=') + 1)));
}
else if (str.StartsWith("$Path"))
{
if (current != null)
{
current.Path = str.Substring(str.IndexOf('=') + 1).Trim();
}
}
else if (str.StartsWith("$Domain"))
{
if (current != null)
{
current.Domain = str.Substring(str.IndexOf('=') + 1).Trim();
}
}
else if (str.StartsWith("$Port"))
{
if (current != null)
{
current.Port = str.Substring(str.IndexOf('=') + 1).Trim();
}
}
else
{
if (current != null)
{
cookies.Add(current);
}
current = new Cookie();
int idx = str.IndexOf('=');
if (idx > 0)
{
current.Name = str.Substring(0, idx).Trim();
current.Value = str.Substring(idx + 1).Trim();
}
else
{
current.Name = str.Trim();
current.Value = String.Empty;
}
current.Version = version;
}
}
if (current != null)
{
cookies.Add(current);
}
break;
}
}
