Merge pull request #5232 from taosdata/fix/TD-2996

[TD-2996]<fix>: reset pContext->singleCmd to zeroes when httpReleaseContext(pContext, true)

src/plugins/http/src/httpContext.c

@@ -155,6 +155,7 @@ void httpReleaseContext(HttpContext *pContext, bool clearRes) {
 
   if (clearRes) {
     httpClearParser(pContext->parser);
+    memset(&pContext->singleCmd, 0, sizeof(HttpSqlCmd));
   }
 
   HttpContext **ppContext = pContext->ppContext;

src/plugins/http/src/httpParser.c

@@ -229,7 +229,7 @@ static int32_t httpOnParseHeaderField(HttpParser *parser, const char *key, const
     return 0;
   }
 
-  else if (strncasecmp(key, "Connection: ", 12) == 0) {
+  else if (strncasecmp(key, "Connection", 10) == 0) {
     if (strncasecmp(val, "Keep-Alive", 10) == 0) {
       parser->keepAlive = HTTP_KEEPALIVE_ENABLE;
     } else {