public bool TryReadRequest(out HttpRequestData r)
{
r = new HttpRequestData();
// wait for some request bytes
if (WaitForRequestBytes() == 0)
{
return(false);
}
// reader header bytes until \r\n\r\n
const int MaxHeaderBytes = 32000;
const byte CR = ((byte)'\r');
const byte LF = ((byte)'\n');
byte[] hb = null;
int hbLen = -1;
byte[] body = null;
int bodyLen = 0;
do
{
byte[] newBytes = ReadRequestBytes(MaxHeaderBytes);
if (newBytes == null)
{
return(false);
}
if (hb == null)
{
hb = newBytes;
}
else
{
int len = hb.Length + newBytes.Length;
if (len > MaxHeaderBytes)
{
return(false);
}
byte[] bytes = new byte[len];
Buffer.BlockCopy(hb, 0, bytes, 0, hb.Length);
Buffer.BlockCopy(newBytes, 0, bytes, hb.Length, newBytes.Length);
hb = bytes;
}
// look for \r\n\r\n in hb
int l = hb.Length;
for (int i = 0; i < l - 1; i++)
{
if (i < l - 3 && hb[i] == CR && hb[i + 1] == LF && hb[i + 2] == CR && hb[i + 3] == LF)
{
hbLen = i + 3;
break;
}
else if (hb[i] == LF && hb[i + 1] == LF)
{
hbLen = i + 1;
break;
}
}
}while (hbLen < 0);
// store the initial body chunk
if (hbLen < hb.Length)
{
bodyLen = hb.Length - hbLen;
body = new byte[bodyLen];
Buffer.BlockCopy(hb, hbLen, body, 0, bodyLen);
}
// convert headers to strings
string[] headers = Encoding.UTF8.GetString(hb, 0, hbLen).Replace("\r\n", "\n").Split('\n');
// parse request line
string[] firstLine = headers[0].Split(' ');
if (firstLine.Length < 2)
{
return(false);
}
r.Method = firstLine[0].Trim();
r.Uri = firstLine[1].Trim();
// parse headers
int contentLength = -1;
for (int i = 1; i < headers.Length; i++)
{
string h = headers[i];
int j = h.IndexOf(':');
if (j > 0)
{
string k = h.Substring(0, j).Trim();
string v = h.Substring(j + 1).Trim();
r.Headers.Add(new KeyValuePair <string, string>(k, v));
if (string.Compare(k, "content-length", StringComparison.OrdinalIgnoreCase) == 0)
{
if (!int.TryParse(v, out contentLength))
{
contentLength = -1;
}
}
}
}
// store the body from the first chunk
if (bodyLen > 0)
{
r.Body.Add(body);
}
// read remaining body, if any
if (contentLength > 0 && bodyLen < contentLength)
{
// 100 response to POST
if (r.Method == "POST")
{
WriteResponse(100, null, null, true);
}
while (bodyLen < contentLength)
{
byte[] bytes = ReadRequestBytes(contentLength - bodyLen);
if (bytes == null || bytes.Length == 0)
{
return(false);
}
bodyLen += bytes.Length;
r.Body.Add(bytes);
}
}
return(true);
}
public bool TryReadRequest(out HttpRequestData r) {
r = new HttpRequestData();
// wait for some request bytes
if (WaitForRequestBytes() == 0) return false;
// reader header bytes until \r\n\r\n
const int MaxHeaderBytes = 32000;
const byte CR = ((byte)'\r');
const byte LF = ((byte)'\n');
byte[] hb = null;
int hbLen = -1;
byte[] body = null;
int bodyLen = 0;
do {
byte[] newBytes = ReadRequestBytes(MaxHeaderBytes);
if (newBytes == null) return false;
if (hb == null) {
hb = newBytes;
}
else {
int len = hb.Length + newBytes.Length;
if (len > MaxHeaderBytes) return false;
byte[] bytes = new byte[len];
Buffer.BlockCopy(hb, 0, bytes, 0, hb.Length);
Buffer.BlockCopy(newBytes, 0, bytes, hb.Length, newBytes.Length);
hb = bytes;
}
// look for \r\n\r\n in hb
int l = hb.Length;
for (int i = 0; i < l - 1; i++) {
if (i < l - 3 && hb[i] == CR && hb[i + 1] == LF && hb[i + 2] == CR && hb[i + 3] == LF) {
hbLen = i + 3;
break;
}
else if (hb[i] == LF && hb[i + 1] == LF) {
hbLen = i + 1;
break;
}
}
}
while (hbLen < 0);
// store the initial body chunk
if (hbLen < hb.Length) {
bodyLen = hb.Length - hbLen;
body = new byte[bodyLen];
Buffer.BlockCopy(hb, hbLen, body, 0, bodyLen);
}
// convert headers to strings
string[] headers = Encoding.UTF8.GetString(hb, 0, hbLen).Replace("\r\n", "\n").Split('\n');
// parse request line
string[] firstLine = headers[0].Split(' ');
if (firstLine.Length < 2) return false;
r.Method = firstLine[0].Trim();
r.Uri = firstLine[1].Trim();
// parse headers
int contentLength = -1;
for (int i = 1; i < headers.Length; i++) {
string h = headers[i];
int j = h.IndexOf(':');
if (j > 0) {
string k = h.Substring(0, j).Trim();
string v = h.Substring(j + 1).Trim();
r.Headers.Add(new KeyValuePair<string, string>(k, v));
if (string.Compare(k, "content-length", StringComparison.OrdinalIgnoreCase) == 0) {
if (!int.TryParse(v, out contentLength)) contentLength = -1;
}
}
}
// store the body from the first chunk
if (bodyLen > 0) r.Body.Add(body);
// read remaining body, if any
if (contentLength > 0 && bodyLen < contentLength) {
// 100 response to POST
if (r.Method == "POST") WriteResponse(100, null, null, true);
while (bodyLen < contentLength) {
byte[] bytes = ReadRequestBytes(contentLength - bodyLen);
if (bytes == null || bytes.Length == 0) {
return false;
}
bodyLen += bytes.Length;
r.Body.Add(bytes);
}
}
return true;
}
void ProcessRequest(HttpSocket s)
{
HttpRequestData r = null;
string path = null;
// reply to unreadable requests
if (!s.TryReadRequest(out r))
{
s.WriteErrorResponse(400, "Unparsable bad request");
}
// deny non-GET requests
else if (r.Method != "GET")
{
s.WriteErrorResponse(405, "Method other than GET");
}
// process special commands
else if (TryProcessSpecialCommand(s, r.Uri))
{
// done
}
// deny requests that cannot be mapped to disk
else if (!TryMapUri(r.Uri, out path))
{
s.WriteErrorResponse(404, "URI cannot be mapped to disk");
}
// process file requests
else if (TryProcessFileRequest(s, r.Uri, path))
{
// done
}
// process directory requests
else if (TryProcessDirectoryRequest(s, r.Uri, path))
{
// done
}
// process XAP requests
else if (TryProcessXapRequest(s, path))
{
// done
}
// process XAP listing requests
else if (TryProcessXapListingRequest(s, r.Uri, path))
{
// done
}
// process requests for assemblies contained in Chiron's localAssemblyPath
else if (TryProcessAssemblyRequest(s, r.Uri))
{
// done
}
// process requests for .slvx files contained in Chiron's localAssemblyPath
else if (TryProcessExternalRequest(s, r.Uri))
{
//done
}
else
{
// not found
s.WriteErrorResponse(404, "Resource not found");
}
Chiron.Log(s.StatusCode, (r != null && r.Uri != null ? r.Uri : "[unknown]"), s.BytesSent, s.Message);
}