|
public ConsumingComplete ( |
||
| consumed | ||
| examined | ||
| return | void | |
public static ValueTask <int> ReadAsync(this SocketInput input, byte[] buffer, int offset, int count)
{
while (true)
{
if (!input.IsCompleted)
{
return(input.ReadAsyncAwaited(buffer, offset, count));
}
var begin = input.ConsumingStart();
int actual;
var end = begin.CopyTo(buffer, offset, count, out actual);
input.ConsumingComplete(end, end);
if (actual != 0)
{
return(actual);
}
if (input.RemoteIntakeFin)
{
return(0);
}
}
}
public static async Task <int> ReadAsync(this SocketInput input, ArraySegment <byte> buffer)
{
while (true)
{
await input;
var begin = input.ConsumingStart();
int actual;
var end = begin.CopyTo(buffer.Array, buffer.Offset, buffer.Count, out actual);
input.ConsumingComplete(end, end);
if (actual != 0)
{
return(actual);
}
if (input.RemoteIntakeFin)
{
return(0);
}
}
}
private static bool TakeChunkedLine(SocketInput baton, ref int chunkSizeOut)
{
var scan = baton.ConsumingStart();
var consumed = scan;
try
{
var ch0 = scan.Take();
var chunkSize = 0;
var mode = 0;
while (ch0 != -1)
{
var ch1 = scan.Take();
if (ch1 == -1)
{
return(false);
}
if (mode == 0)
{
if (ch0 >= '0' && ch0 <= '9')
{
chunkSize = chunkSize * 0x10 + (ch0 - '0');
}
else if (ch0 >= 'A' && ch0 <= 'F')
{
chunkSize = chunkSize * 0x10 + (ch0 - ('A' - 10));
}
else if (ch0 >= 'a' && ch0 <= 'f')
{
chunkSize = chunkSize * 0x10 + (ch0 - ('a' - 10));
}
else
{
throw new NotImplementedException("INVALID REQUEST FORMAT");
}
mode = 1;
}
else if (mode == 1)
{
if (ch0 >= '0' && ch0 <= '9')
{
chunkSize = chunkSize * 0x10 + (ch0 - '0');
}
else if (ch0 >= 'A' && ch0 <= 'F')
{
chunkSize = chunkSize * 0x10 + (ch0 - ('A' - 10));
}
else if (ch0 >= 'a' && ch0 <= 'f')
{
chunkSize = chunkSize * 0x10 + (ch0 - ('a' - 10));
}
else if (ch0 == ';')
{
mode = 2;
}
else if (ch0 == '\r' && ch1 == '\n')
{
consumed = scan;
chunkSizeOut = chunkSize;
return(true);
}
else
{
throw new NotImplementedException("INVALID REQUEST FORMAT");
}
}
else if (mode == 2)
{
if (ch0 == '\r' && ch1 == '\n')
{
consumed = scan;
chunkSizeOut = chunkSize;
return(true);
}
else
{
// chunk-extensions not currently parsed
}
}
ch0 = ch1;
}
return(false);
}
finally
{
baton.ConsumingComplete(consumed, scan);
}
}
public static bool TakeMessageHeaders(SocketInput input, FrameRequestHeaders requestHeaders)
{
var scan = input.ConsumingStart();
var consumed = scan;
try
{
int chFirst;
int chSecond;
while (!scan.IsEnd)
{
var beginName = scan;
scan.Seek(ref _vectorColons, ref _vectorCRs);
var endName = scan;
chFirst = scan.Take();
var beginValue = scan;
chSecond = scan.Take();
if (chFirst == -1 || chSecond == -1)
{
return(false);
}
if (chFirst == '\r')
{
if (chSecond == '\n')
{
consumed = scan;
return(true);
}
throw new InvalidDataException("Malformed request");
}
while (
chSecond == ' ' ||
chSecond == '\t' ||
chSecond == '\r' ||
chSecond == '\n')
{
if (chSecond == '\r')
{
var scanAhead = scan;
var chAhead = scanAhead.Take();
if (chAhead == '\n')
{
chAhead = scanAhead.Take();
// If the "\r\n" isn't part of "linear whitespace",
// then this header has no value.
if (chAhead != ' ' && chAhead != '\t')
{
break;
}
}
}
beginValue = scan;
chSecond = scan.Take();
}
scan = beginValue;
var wrapping = false;
while (!scan.IsEnd)
{
if (scan.Seek(ref _vectorCRs) == -1)
{
// no "\r" in sight, burn used bytes and go back to await more data
return(false);
}
var endValue = scan;
chFirst = scan.Take(); // expecting: /r
chSecond = scan.Take(); // expecting: /n
if (chSecond != '\n')
{
// "\r" was all by itself, move just after it and try again
scan = endValue;
scan.Take();
continue;
}
var chThird = scan.Peek();
if (chThird == ' ' || chThird == '\t')
{
// special case, "\r\n " or "\r\n\t".
// this is considered wrapping"linear whitespace" and is actually part of the header value
// continue past this for the next
wrapping = true;
continue;
}
var name = beginName.GetArraySegment(endName);
var value = beginValue.GetAsciiString(endValue);
if (wrapping)
{
value = value.Replace("\r\n", " ");
}
consumed = scan;
requestHeaders.Append(name.Array, name.Offset, name.Count, value);
break;
}
}
return(false);
}
finally
{
input.ConsumingComplete(consumed, scan);
}
}
protected bool TakeStartLine(SocketInput input)
{
var scan = input.ConsumingStart();
var consumed = scan;
try
{
string method;
var begin = scan;
if (!begin.GetKnownMethod(ref scan, out method))
{
if (scan.Seek(ref _vectorSpaces) == -1)
{
return(false);
}
method = begin.GetAsciiString(scan);
scan.Take();
}
begin = scan;
var needDecode = false;
var chFound = scan.Seek(ref _vectorSpaces, ref _vectorQuestionMarks, ref _vectorPercentages);
if (chFound == '%')
{
needDecode = true;
chFound = scan.Seek(ref _vectorSpaces, ref _vectorQuestionMarks);
}
var pathBegin = begin;
var pathEnd = scan;
var queryString = "";
if (chFound == '?')
{
begin = scan;
if (scan.Seek(ref _vectorSpaces) != ' ')
{
return(false);
}
queryString = begin.GetAsciiString(scan);
}
scan.Take();
begin = scan;
string httpVersion;
if (!begin.GetKnownVersion(ref scan, out httpVersion))
{
scan = begin;
if (scan.Seek(ref _vectorCRs) == -1)
{
return(false);
}
httpVersion = begin.GetAsciiString(scan);
scan.Take();
}
if (scan.Take() != '\n')
{
return(false);
}
// URIs are always encoded/escaped to ASCII https://tools.ietf.org/html/rfc3986#page-11
// Multibyte Internationalized Resource Identifiers (IRIs) are first converted to utf8;
// then encoded/escaped to ASCII https://www.ietf.org/rfc/rfc3987.txt "Mapping of IRIs to URIs"
string requestUrlPath;
if (needDecode)
{
// URI was encoded, unescape and then parse as utf8
pathEnd = UrlPathDecoder.Unescape(pathBegin, pathEnd);
requestUrlPath = pathBegin.GetUtf8String(pathEnd);
}
else
{
// URI wasn't encoded, parse as ASCII
requestUrlPath = pathBegin.GetAsciiString(pathEnd);
}
consumed = scan;
Method = method;
RequestUri = requestUrlPath;
QueryString = queryString;
HttpVersion = httpVersion;
bool caseMatches;
if (!string.IsNullOrEmpty(_pathBase) &&
(requestUrlPath.Length == _pathBase.Length || (requestUrlPath.Length > _pathBase.Length && requestUrlPath[_pathBase.Length] == '/')) &&
RequestUrlStartsWithPathBase(requestUrlPath, out caseMatches))
{
PathBase = caseMatches ? _pathBase : requestUrlPath.Substring(0, _pathBase.Length);
Path = requestUrlPath.Substring(_pathBase.Length);
}
else
{
Path = requestUrlPath;
}
return(true);
}
finally
{
input.ConsumingComplete(consumed, scan);
}
}
private bool TakeMessageHeaders(SocketInput input)
{
var scan = input.ConsumingStart();
var consumed = scan;
try
{
int chFirst;
int chSecond;
while (!scan.IsEnd)
{
var beginName = scan;
scan.Seek(':', '\r');
var endName = scan;
chFirst = scan.Take();
var beginValue = scan;
chSecond = scan.Take();
if (chFirst == -1 || chSecond == -1)
{
return false;
}
if (chFirst == '\r')
{
if (chSecond == '\n')
{
consumed = scan;
return true;
}
throw new InvalidDataException("Malformed request");
}
while (
chSecond == ' ' ||
chSecond == '\t' ||
chSecond == '\r' ||
chSecond == '\n')
{
beginValue = scan;
chSecond = scan.Take();
}
scan = beginValue;
var wrapping = false;
while (!scan.IsEnd)
{
if (scan.Seek('\r') == -1)
{
// no "\r" in sight, burn used bytes and go back to await more data
return false;
}
var endValue = scan;
chFirst = scan.Take(); // expecting: /r
chSecond = scan.Take(); // expecting: /n
if (chSecond != '\n')
{
// "\r" was all by itself, move just after it and try again
scan = endValue;
scan.Take();
continue;
}
var chThird = scan.Peek();
if (chThird == ' ' || chThird == '\t')
{
// special case, "\r\n " or "\r\n\t".
// this is considered wrapping"linear whitespace" and is actually part of the header value
// continue past this for the next
wrapping = true;
continue;
}
var name = beginName.GetArraySegment(endName);
#if DEBUG
var nameString = beginName.GetString(endName);
#endif
var value = beginValue.GetString(endValue);
if (wrapping)
{
value = value.Replace("\r\n", " ");
}
consumed = scan;
_requestHeaders.Append(name.Array, name.Offset, name.Count, value);
break;
}
}
return false;
}
finally
{
input.ConsumingComplete(consumed, scan);
}
}
private bool TakeStartLine(SocketInput input)
{
var scan = input.ConsumingStart();
var consumed = scan;
try
{
var begin = scan;
if (scan.Seek(' ') == -1)
{
return false;
}
var method = begin.GetString(scan);
scan.Take();
begin = scan;
var chFound = scan.Seek(' ', '?');
if (chFound == -1)
{
return false;
}
var requestUri = begin.GetString(scan);
var queryString = "";
if (chFound == '?')
{
begin = scan;
if (scan.Seek(' ') != ' ')
{
return false;
}
queryString = begin.GetString(scan);
}
scan.Take();
begin = scan;
if (scan.Seek('\r') == -1)
{
return false;
}
var httpVersion = begin.GetString(scan);
scan.Take();
if (scan.Take() != '\n')
{
return false;
}
consumed = scan;
Method = method;
RequestUri = requestUri;
QueryString = queryString;
HttpVersion = httpVersion;
Path = RequestUri;
return true;
}
finally
{
input.ConsumingComplete(consumed, scan);
}
}
private static bool TakeChunkedLine(SocketInput baton, ref int chunkSizeOut)
{
var scan = baton.ConsumingStart();
var consumed = scan;
try
{
var ch0 = scan.Take();
var chunkSize = 0;
var mode = 0;
while (ch0 != -1)
{
var ch1 = scan.Take();
if (ch1 == -1)
{
return false;
}
if (mode == 0)
{
if (ch0 >= '0' && ch0 <= '9')
{
chunkSize = chunkSize * 0x10 + (ch0 - '0');
}
else if (ch0 >= 'A' && ch0 <= 'F')
{
chunkSize = chunkSize * 0x10 + (ch0 - ('A' - 10));
}
else if (ch0 >= 'a' && ch0 <= 'f')
{
chunkSize = chunkSize * 0x10 + (ch0 - ('a' - 10));
}
else
{
throw new NotImplementedException("INVALID REQUEST FORMAT");
}
mode = 1;
}
else if (mode == 1)
{
if (ch0 >= '0' && ch0 <= '9')
{
chunkSize = chunkSize * 0x10 + (ch0 - '0');
}
else if (ch0 >= 'A' && ch0 <= 'F')
{
chunkSize = chunkSize * 0x10 + (ch0 - ('A' - 10));
}
else if (ch0 >= 'a' && ch0 <= 'f')
{
chunkSize = chunkSize * 0x10 + (ch0 - ('a' - 10));
}
else if (ch0 == ';')
{
mode = 2;
}
else if (ch0 == '\r' && ch1 == '\n')
{
consumed = scan;
chunkSizeOut = chunkSize;
return true;
}
else
{
throw new NotImplementedException("INVALID REQUEST FORMAT");
}
}
else if (mode == 2)
{
if (ch0 == '\r' && ch1 == '\n')
{
consumed = scan;
chunkSizeOut = chunkSize;
return true;
}
else
{
// chunk-extensions not currently parsed
}
}
ch0 = ch1;
}
return false;
}
finally
{
baton.ConsumingComplete(consumed, scan);
}
}
private bool TakeStartLine(SocketInput input)
{
var scan = input.ConsumingStart();
var consumed = scan;
try
{
var begin = scan;
if (scan.Seek(' ') == -1)
{
return(false);
}
var method = begin.GetString(scan);
scan.Take();
begin = scan;
var chFound = scan.Seek(' ', '?');
if (chFound == -1)
{
return(false);
}
var requestUri = begin.GetString(scan);
var queryString = "";
if (chFound == '?')
{
begin = scan;
if (scan.Seek(' ') != ' ')
{
return(false);
}
queryString = begin.GetString(scan);
}
scan.Take();
begin = scan;
if (scan.Seek('\r') == -1)
{
return(false);
}
var httpVersion = begin.GetString(scan);
scan.Take();
if (scan.Take() != '\n')
{
return(false);
}
consumed = scan;
Method = method;
RequestUri = requestUri;
QueryString = queryString;
HttpVersion = httpVersion;
Path = RequestUri;
return(true);
}
finally
{
input.ConsumingComplete(consumed, scan);
}
}
protected bool TakeStartLine(SocketInput input)
{
var scan = input.ConsumingStart();
var consumed = scan;
try
{
string method;
var begin = scan;
if (!begin.GetKnownMethod(ref scan,out method))
{
if (scan.Seek(ref _vectorSpaces) == -1)
{
return false;
}
method = begin.GetAsciiString(scan);
scan.Take();
}
begin = scan;
var needDecode = false;
var chFound = scan.Seek(ref _vectorSpaces, ref _vectorQuestionMarks, ref _vectorPercentages);
if (chFound == '%')
{
needDecode = true;
chFound = scan.Seek(ref _vectorSpaces, ref _vectorQuestionMarks);
}
var pathBegin = begin;
var pathEnd = scan;
var queryString = "";
if (chFound == '?')
{
begin = scan;
if (scan.Seek(ref _vectorSpaces) != ' ')
{
return false;
}
queryString = begin.GetAsciiString(scan);
}
scan.Take();
begin = scan;
string httpVersion;
if (!begin.GetKnownVersion(ref scan, out httpVersion))
{
scan = begin;
if (scan.Seek(ref _vectorCRs) == -1)
{
return false;
}
httpVersion = begin.GetAsciiString(scan);
scan.Take();
}
if (scan.Take() != '\n')
{
return false;
}
// URIs are always encoded/escaped to ASCII https://tools.ietf.org/html/rfc3986#page-11
// Multibyte Internationalized Resource Identifiers (IRIs) are first converted to utf8;
// then encoded/escaped to ASCII https://www.ietf.org/rfc/rfc3987.txt "Mapping of IRIs to URIs"
string requestUrlPath;
if (needDecode)
{
// URI was encoded, unescape and then parse as utf8
pathEnd = UrlPathDecoder.Unescape(pathBegin, pathEnd);
requestUrlPath = pathBegin.GetUtf8String(pathEnd);
}
else
{
// URI wasn't encoded, parse as ASCII
requestUrlPath = pathBegin.GetAsciiString(pathEnd);
}
consumed = scan;
Method = method;
RequestUri = requestUrlPath;
QueryString = queryString;
HttpVersion = httpVersion;
bool caseMatches;
if (!string.IsNullOrEmpty(_pathBase) &&
(requestUrlPath.Length == _pathBase.Length || (requestUrlPath.Length > _pathBase.Length && requestUrlPath[_pathBase.Length] == '/')) &&
RequestUrlStartsWithPathBase(requestUrlPath, out caseMatches))
{
PathBase = caseMatches ? _pathBase : requestUrlPath.Substring(0, _pathBase.Length);
Path = requestUrlPath.Substring(_pathBase.Length);
}
else
{
Path = requestUrlPath;
}
return true;
}
finally
{
input.ConsumingComplete(consumed, scan);
}
}
private bool TakeStartLine(SocketInput input)
{
var scan = input.ConsumingStart();
var consumed = scan;
try
{
var begin = scan;
if (scan.Seek(' ') == -1)
{
return false;
}
var method = begin.GetString(scan);
scan.Take();
begin = scan;
var needDecode = false;
var chFound = scan.Seek(' ', '?', '%');
if (chFound == '%')
{
needDecode = true;
chFound = scan.Seek(' ', '?');
}
var pathBegin = begin;
var pathEnd = scan;
var queryString = "";
if (chFound == '?')
{
begin = scan;
if (scan.Seek(' ') != ' ')
{
return false;
}
queryString = begin.GetString(scan);
}
scan.Take();
begin = scan;
if (scan.Seek('\r') == -1)
{
return false;
}
var httpVersion = begin.GetString(scan);
scan.Take();
if (scan.Take() != '\n')
{
return false;
}
if (needDecode)
{
pathEnd = UrlPathDecoder.Unescape(pathBegin, pathEnd);
}
var requestUrlPath = pathBegin.GetString(pathEnd);
consumed = scan;
Method = method;
RequestUri = requestUrlPath;
QueryString = queryString;
HttpVersion = httpVersion;
Path = RequestUri;
return true;
}
finally
{
input.ConsumingComplete(consumed, scan);
}
}
private bool TakeStartLine(SocketInput input)
{
var scan = input.ConsumingStart();
var consumed = scan;
try
{
var begin = scan;
if (scan.Seek(' ') == -1)
{
return(false);
}
var method = begin.GetString(scan);
scan.Take();
begin = scan;
var needDecode = false;
var chFound = scan.Seek(' ', '?', '%');
if (chFound == '%')
{
needDecode = true;
chFound = scan.Seek(' ', '?');
}
var pathBegin = begin;
var pathEnd = scan;
var queryString = "";
if (chFound == '?')
{
begin = scan;
if (scan.Seek(' ') != ' ')
{
return(false);
}
queryString = begin.GetString(scan);
}
scan.Take();
begin = scan;
if (scan.Seek('\r') == -1)
{
return(false);
}
var httpVersion = begin.GetString(scan);
scan.Take();
if (scan.Take() != '\n')
{
return(false);
}
if (needDecode)
{
pathEnd = UrlPathDecoder.Unescape(pathBegin, pathEnd);
}
var requestUrlPath = pathBegin.GetString(pathEnd);
consumed = scan;
Method = method;
RequestUri = requestUrlPath;
QueryString = queryString;
HttpVersion = httpVersion;
Path = RequestUri;
return(true);
}
finally
{
input.ConsumingComplete(consumed, scan);
}
}
