now incomplete requests should no longer block the complete server. Tested with …

…\'echo -en "GET / HTTP\r\nConn" | nc -w 600 localhost 11212\' and then doing requests from my browser. @TODO: cleanup those stuff, check if a not correctly response reading would block the server.

+2012-02-19 20:12:40 +0100 Georg Hopp 
+
+	* now incomplete requests should no longer block the complete server. Tested with \'echo -en "GET / HTTP\r\nConn" | nc -w 600 localhost 11212\' and then doing requests from my browser. @TODO: cleanup those stuff, check if a not correctly response reading would block the server. (HEAD, master)
+
 2012-02-19 18:28:30 +0100 Georg Hopp 
 
-	* increase writebuffer size a lot. (HEAD, master)
+	* increase writebuffer size a lot. (origin/master, origin/HEAD)
 
 2012-02-19 18:15:55 +0100 Georg Hopp 
 
-	* fixed the non keep-alive performance issue as well as i lower memory usage by using a single read and write circular buffer for every connection. @TODO: i noticed a server hang while getting large data (my image) with non keep-alive connections. Additionally an incomplete keep-alive request might stop the server now as the lock on the read buffer will not be released. (origin/master, origin/HEAD)
+	* fixed the non keep-alive performance issue as well as i lower memory usage by using a single read and write circular buffer for every connection. @TODO: i noticed a server hang while getting large data (my image) with non keep-alive connections. Additionally an incomplete keep-alive request might stop the server now as the lock on the read buffer will not be released.
 
 2012-02-19 15:41:48 +0100 Georg Hopp 
 

@@ -28,6 +28,9 @@ CLASS(HttpRequestParser) {
 	Cbuf             buffer;
 	void *           ourLock;
 
+	char *           incomplete;
+	size_t           isize;
+
 	HttpMessageQueue request_queue;
 	HttpRequest      cur_request;
 

@@ -34,6 +34,9 @@ dtor(void * _this)
 	if (TRUE == this->ourLock)
 		cbufRelease(this->buffer);
 
+	if (NULL != this->incomplete)
+		free(this->incomplete);
+
 	if (NULL != this->cur_request)
 		delete(&(this->cur_request));
 } 

@@ -25,7 +25,30 @@ httpRequestParserParse(HttpRequestParser this, int fd)
 		this->ourLock = TRUE;
 	}
 
-	if(0 > (read = cbufRead(this->buffer, fd))) {
+	if (NULL != this->incomplete) {
+		/**
+		 * i need a way to stop incomplete requests
+		 * from locking the buffer forever. 
+		 * Maybe this is the position for this...
+		 * but i must carefully think about the
+		 * conditions...maybe a rewrite of the
+		 * parser is neccessary to detect a
+		 * stale request.
+		 * The problem here seems to be that i can't
+		 * say for sure if the request is stale.
+		 * This is mostly because i work linewise.
+		 * This MUST be accomplished within
+		 * request line and header reads.
+		 * As far as i see the only way it to
+		 * always empty the buffer completely after
+		 * every read and release the buffer then.
+		 */
+		cbufSetData(this->buffer, this->incomplete, this->isize);
+		free(this->incomplete);
+		this->incomplete = NULL;
+	}
+
+	if (0 > (read = cbufRead(this->buffer, fd))) {
 		return read;
 	}
 
@@ -47,6 +70,15 @@ httpRequestParserParse(HttpRequestParser this, int fd)
 
 			case HTTP_REQUEST_START:
 				if (NULL == (line = cbufGetLine(this->buffer))) {
+					if (! cbufIsEmpty(this->buffer)) {
+						this->isize = this->buffer->bused;
+						this->incomplete = malloc(this->isize);
+						memcpy(this->incomplete,
+								cbufGetData(this->buffer, this->isize),
+								this->isize);
+					}
+					cbufRelease(this->buffer);
+					this->ourLock = FALSE;
 					cont = 0;
 					break;
 				}
@@ -69,6 +101,15 @@ httpRequestParserParse(HttpRequestParser this, int fd)
 
 			case HTTP_REQUEST_REQUEST_LINE_DONE:
 				if (NULL == (line = cbufGetLine(this->buffer))) {
+					if (! cbufIsEmpty(this->buffer)) {
+						this->isize = this->buffer->bused;
+						this->incomplete = malloc(this->isize);
+						memcpy(this->incomplete,
+								cbufGetData(this->buffer, this->isize),
+								this->isize);
+					}
+					cbufRelease(this->buffer);
+					this->ourLock = FALSE;
 					cont = 0;
 					break;
 				}
@@ -100,6 +141,10 @@ httpRequestParserParse(HttpRequestParser this, int fd)
 					HttpMessage message = (HttpMessage)this->cur_request;
 
 					httpRequestParserGetBody(this);
+					if (cbufIsEmpty(this->buffer)) {
+						cbufRelease(this->buffer);
+						this->ourLock = FALSE;
+					}
 
 					if (message->dbody == message->nbody) {
 						this->state = HTTP_REQUEST_DONE;