fix bug #570

src/client/src/tscSql.c

@@ -134,10 +134,12 @@ TAOS *taos_connect(char *ip, char *user, char *pass, char *db, int port) {
 
   void *taos = taos_connect_imp(ip, user, pass, db, port, NULL, NULL, NULL);
   if (taos != NULL) {
+    STscObj* pObj = (STscObj*) taos;
+
     int clientVersionNumber[4] = {0};
     if (!taosGetVersionNumber(version, clientVersionNumber)) {
       tscError("taos:%p, invalid client version:%s", taos, version);
-      globalCode = TSDB_CODE_INVALID_CLIENT_VERSION;
+      pObj->pSql->res.code = TSDB_CODE_INVALID_CLIENT_VERSION;
       taos_close(taos);
       return NULL;
     }
@@ -146,33 +148,22 @@ TAOS *taos_connect(char *ip, char *user, char *pass, char *db, int port) {
     int serverVersionNumber[4] = {0};
     if (!taosGetVersionNumber(server_version, serverVersionNumber)) {
       tscError("taos:%p, invalid server version:%s", taos, server_version);
-      globalCode = TSDB_CODE_INVALID_CLIENT_VERSION;
+      pObj->pSql->res.code = TSDB_CODE_INVALID_CLIENT_VERSION;
       taos_close(taos);
       return NULL;
     }
 
-    if (clientVersionNumber[0] != serverVersionNumber[0]) {
-      tscError("taos:%p, the 1st number of server version:%s not matched with client version:%s, close connection",
-               taos, server_version, version);
-      globalCode = TSDB_CODE_INVALID_CLIENT_VERSION;
-      taos_close(taos);
-      return NULL;
-    }
+    // version compare only requires the first 3 segments of the version string
+    int32_t comparedSegments = 3;
 
-    if (clientVersionNumber[1] != serverVersionNumber[1]) {
-      tscError("taos:%p, the 2nd number of server version:%s not matched with client version:%s, close connection",
-               taos, server_version, version);
-      globalCode = TSDB_CODE_INVALID_CLIENT_VERSION;
+    for(int32_t i = 0; i < comparedSegments; ++i) {
+      if (clientVersionNumber[i] != serverVersionNumber[i]) {
+        tscError("taos:%p, the %d-th number of server version:%s not matched with client version:%s, close connection",
+                 taos, i, server_version, version);
+        pObj->pSql->res.code = TSDB_CODE_INVALID_CLIENT_VERSION;
         taos_close(taos);
         return NULL;
       }
-
-    if (clientVersionNumber[2] != serverVersionNumber[2]) {
-      tscError("taos:%p, the 3rd number of server version:%s not matched with client version:%s, close connection",
-               taos, server_version, version);
-      globalCode = TSDB_CODE_INVALID_CLIENT_VERSION;
-      taos_close(taos);
-      return NULL;
     }
   }