[TD-6217]<fix>: fixed memory leak that caused by invalid http requests

src/plugins/http/inc/httpInt.h

@@ -147,6 +147,7 @@ typedef struct HttpContext {
   int32_t      state;
   uint8_t      reqType;
   uint8_t      parsed;
+  uint8_t      error;
   char         ipstr[22];
   char         user[TSDB_USER_LEN];  // parsed from auth token or login message
   char         pass[HTTP_PASSWORD_LEN];

src/plugins/http/src/httpContext.c

@@ -188,11 +188,12 @@ void httpCloseContextByApp(HttpContext *pContext) {
   pContext->parsed = false;
   bool keepAlive = true;
 
-  if (parser && parser->httpVersion == HTTP_VERSION_10 && parser->keepAlive != HTTP_KEEPALIVE_ENABLE) {
+  if (pContext->error == true) {
+    keepAlive = false;
+  } else if (parser && parser->httpVersion == HTTP_VERSION_10 && parser->keepAlive != HTTP_KEEPALIVE_ENABLE) {
     keepAlive = false;
   } else if (parser && parser->httpVersion != HTTP_VERSION_10 && parser->keepAlive == HTTP_KEEPALIVE_DISABLE) {
     keepAlive = false;
-  } else {
   }
 
   if (keepAlive) {

src/plugins/http/src/httpParser.c

@@ -663,7 +663,7 @@ static int32_t httpParserOnTarget(HttpParser *parser, HTTP_PARSER_STATE state, c
   HttpContext *pContext = parser->pContext;
   int32_t      ok = 0;
   do {
-    if (!isspace(c)) {
+    if (!isspace(c) && c != '\r' && c != '\n') {
       if (httpAppendString(&parser->str, &c, 1)) {
         httpError("context:%p, fd:%d, parser state:%d, char:[%c]%02x, oom", pContext, pContext->fd, state, c, c);
         ok = -1;
@@ -1157,6 +1157,10 @@ static int32_t httpParseChar(HttpParser *parser, const char c, int32_t *again) {
     httpOnError(parser, HTTP_CODE_INTERNAL_SERVER_ERROR, TSDB_CODE_HTTP_PARSE_ERROR_STATE);
   }
 
+  if (ok != 0) {
+    pContext->error = 1;
+  }
+
   return ok;
 }