diff --git a/.appveyor.yml b/.appveyor.yml
index fe4816688b43276a4a9ca7b911b39a43b8fc2141..ee1dc91767da710bbc508801d88474a20eba60df 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,30 +1,49 @@
 version: 1.0.{build}
-os: Visual Studio 2015
+image: 
+  - Visual Studio 2015
+  - macos
 environment:
   matrix:
     - ARCH: amd64
     - ARCH: x86
+matrix:
+  exclude:
+    - image: macos
+      ARCH: x86
+for:
+  - 
+    matrix:
+      only:
+        - image: Visual Studio 2015
+    clone_folder: c:\dev\TDengine
+    clone_depth: 1
 
-clone_folder: c:\dev\TDengine
-clone_depth: 1
+    init:
+      - call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" %ARCH%
 
-init:
-  - call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" %ARCH%
+    before_build:
+      - cd c:\dev\TDengine
+      - md build
 
-before_build:
-  - cd c:\dev\TDengine
-  - md build
-
-build_script:
-  - cd build
-  - cmake -G "NMake Makefiles" ..
-  - nmake install
+    build_script:
+      - cd build
+      - cmake -G "NMake Makefiles" ..
+      - nmake install
+  -
+    matrix:
+      only:
+        - image: macos
+    clone_depth: 1
 
+    build_script:
+      - mkdir debug
+      - cd debug
+      - cmake .. > /dev/null
+      - make > /dev/null
 notifications:
 - provider: Email
   to:
   - sangshuduo@gmail.com
-  
   on_build_success: true
   on_build_failure: true
   on_build_status_changed: true
diff --git a/.drone.yml b/.drone.yml
new file mode 100644
index 0000000000000000000000000000000000000000..e7ae6ebbdaed1b2446e99e3f0365907ff44754d0
--- /dev/null
+++ b/.drone.yml
@@ -0,0 +1,180 @@
+---
+kind: pipeline
+name: test_amd64
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: smoke_test
+  image: python:3.8
+  commands:
+  - apt-get update
+  - apt-get install -y cmake build-essential gcc 
+  - pip3 install psutil
+  - pip3 install guppy3
+  - pip3 install src/connector/python/linux/python3/
+  - mkdir debug
+  - cd debug
+  - cmake .. 
+  - make 
+  - cd ../tests
+  - ./test-all.sh smoke
+  when:
+    branch:
+    - develop
+    - master
+
+
+- name: crash_gen
+  image: python:3.8
+  commands:
+  - pip3 install requests
+  - pip3 install src/connector/python/linux/python3/
+  - pip3 install psutil
+  - pip3 install guppy3
+  - cd tests/pytest 
+  - ./crash_gen.sh -a -p -t 4 -s 2000
+  when:
+    branch:
+    - develop
+    - master
+
+
+---
+kind: pipeline
+name: test_arm64
+
+platform:
+  os: linux
+  arch: arm64
+
+steps:
+- name: build
+  image: gcc
+  commands:
+  - apt-get update
+  - apt-get install -y cmake build-essential
+  - mkdir debug
+  - cd debug
+  - cmake .. -DCPUTYPE=aarch64 > /dev/null
+  - make 
+  when:
+    branch:
+    - develop
+    - master
+---
+kind: pipeline
+name: test_arm
+
+platform:
+  os: linux
+  arch: arm
+
+steps:
+- name: build
+  image: arm32v7/ubuntu:bionic
+  commands:
+  - apt-get update
+  - apt-get install -y cmake build-essential
+  - mkdir debug
+  - cd debug
+  - cmake .. -DCPUTYPE=aarch32 > /dev/null
+  - make 
+  when:
+    branch:
+    - develop
+    - master
+
+---
+kind: pipeline
+name: build_trusty
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: build
+  image: ubuntu:trusty
+  commands:
+  - apt-get update
+  - apt-get install -y gcc cmake3 build-essential git binutils-2.26
+ 
+  - mkdir debug
+  - cd debug
+  - cmake .. 
+  - make 
+  when:
+    branch:
+    - develop
+    - master
+
+---
+kind: pipeline
+name: build_xenial
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: build
+  image: ubuntu:xenial
+  commands:
+  - apt-get update
+  - apt-get install -y gcc cmake build-essential
+  - mkdir debug
+  - cd debug
+  - cmake .. 
+  - make 
+  when:
+    branch:
+    - develop
+    - master
+
+---
+kind: pipeline
+name: build_bionic
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: build
+  image: ubuntu:bionic
+  commands:
+  - apt-get update
+  - apt-get install -y gcc cmake build-essential
+  - mkdir debug
+  - cd debug
+  - cmake .. 
+  - make 
+  when:
+    branch:
+    - develop
+    - master
+
+---
+kind: pipeline
+name: goodbye
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: 64-bit
+  image: alpine
+  commands:
+  - echo 64-bit is good.
+  when:
+    branch:
+    - develop
+    - master
+
+
+depends_on:
+- test_arm64
+- test_amd64
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index efe79171058c1c22d84a3792628ddcefd32f1bad..0000000000000000000000000000000000000000
--- a/.travis.yml
+++ /dev/null
@@ -1,298 +0,0 @@
-#
-# Configuration
-#
-#
-# Build Matrix
-#
-branches:
-  only:
-    - master
-    - develop
-    - coverity_scan
-    - /^.*ci-.*$/
-
-matrix:
-  - os: linux
-    dist: bionic
-    language: c
-
-    git:
-      - depth: 1
-
-    compiler: gcc
-    env: DESC="linux/gcc build and test"
-
-    addons:
-      apt:
-        packages:
-          - build-essential
-          - cmake
-          - net-tools
-          - python3.8
-          - libc6-dbg
-          - valgrind
-          - psmisc
-          - unixodbc
-          - unixodbc-dev
-          - mono-complete
-
-    before_script:
-      - export TZ=Asia/Harbin
-      - date
-      - curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py && python3.8 get-pip.py
-      - python3.8 -m pip install --upgrade pip setuptools
-      - cd ${TRAVIS_BUILD_DIR}
-      - mkdir debug
-      - cd debug
-
-    script:
-      - cmake .. > /dev/null
-      - make > /dev/null
-
-    after_success:
-      - travis_wait 20
-      - |-
-        case $TRAVIS_OS_NAME in
-          linux)
-          cd ${TRAVIS_BUILD_DIR}/debug
-          make install > /dev/null || travis_terminate $?
-
-          py3ver=`python3 --version|awk '{print $2}'|cut -d "." -f 1,2` && apt install python$py3ver-dev
-          pip3 install psutil
-          pip3 install guppy3
-          pip3 install --user ${TRAVIS_BUILD_DIR}/src/connector/python/linux/python3/
-
-          cd ${TRAVIS_BUILD_DIR}/tests/examples/C#/taosdemo
-          mcs -out:taosdemo *.cs || travis_terminate $?
-          pkill -TERM -x taosd
-          fuser -k -n tcp 6030
-          sleep 1
-          ${TRAVIS_BUILD_DIR}/debug/build/bin/taosd -c ${TRAVIS_BUILD_DIR}/debug/test/cfg > /dev/null &
-          sleep 5
-          mono taosdemo -Q DEFAULT -y || travis_terminate $?
-          pkill -KILL -x taosd
-          fuser -k -n tcp 6030
-          sleep 1
-
-          cd ${TRAVIS_BUILD_DIR}/tests
-          ./test-all.sh smoke || travis_terminate $?
-          sleep 1
-
-          cd ${TRAVIS_BUILD_DIR}/tests/pytest
-          pkill -TERM -x taosd
-          fuser -k -n tcp 6030
-          sleep 1
-          ./crash_gen.sh -a -p -t 4 -s 2000|| travis_terminate $?
-          sleep 1
-
-          cd ${TRAVIS_BUILD_DIR}/tests/pytest
-          ./valgrind-test.sh 2>&1 > mem-error-out.log
-          sleep 1
-
-
-          # Color setting
-          RED='\033[0;31m'
-          GREEN='\033[1;32m'
-          GREEN_DARK='\033[0;32m'
-          GREEN_UNDERLINE='\033[4;32m'
-          NC='\033[0m'
-
-          grep 'start to execute\|ERROR SUMMARY' mem-error-out.log|grep -v 'grep'|uniq|tee uniq-mem-error-out.log
-
-          for memError in `grep 'ERROR SUMMARY' uniq-mem-error-out.log | awk '{print $4}'`
-          do
-            if [ -n "$memError" ]; then
-              if [ "$memError" -gt 12 ]; then
-                echo -e "${RED} ## Memory errors number valgrind reports is $memError.\
-                         More than our threshold! ## ${NC}"
-                travis_terminate $memError
-              fi
-            fi
-          done
-
-          grep 'start to execute\|definitely lost:' mem-error-out.log|grep -v 'grep'|uniq|tee uniq-definitely-lost-out.log
-          for defiMemError in `grep 'definitely lost:' uniq-definitely-lost-out.log | awk '{print $7}'`
-          do
-            if [ -n "$defiMemError" ]; then
-              if [ "$defiMemError" -gt 13 ]; then
-                echo -e "${RED} ## Memory errors number valgrind reports \
-                         Definitely lost is $defiMemError. More than our threshold! ## ${NC}"
-                travis_terminate $defiMemError
-              fi
-            fi
-          done
-
-          ;;
-        esac
-
-  - os: linux
-    dist: bionic
-    language: c
-    compiler: gcc
-    env: COVERITY_SCAN=true
-    git:
-      - depth: 1
-
-    script:
-      - echo "this job is for coverity scan"
-
-    addons:
-      coverity_scan:
-        # GitHub project metadata
-        # ** specific to your project **
-        project:
-          name: TDengine
-          version: 2.x
-          description: TDengine
-
-        # Where email notification of build analysis results will be sent
-        notification_email: sdsang@taosdata.com, slguan@taosdata.com
-
-        # Commands to prepare for build_command
-        # ** likely specific to your build **
-        build_command_prepend: cmake . > /dev/null
-
-        # The command that will be added as an argument to "cov-build" to compile your project for analysis,
-        # ** likely specific to your build **
-        build_command: make
-
-        # Pattern to match selecting branches that will run analysis. We recommend leaving this set to 'coverity_scan'.
-        # Take care in resource usage, and consider the build frequency allowances per
-        #   https://scan.coverity.com/faq#frequency
-        branch_pattern: coverity_scan
-
-  - os: linux
-    dist: trusty
-    language: c
-    git:
-      - depth: 1
-
-    addons:
-      apt:
-        packages:
-          - build-essential
-          - cmake
-          - binutils-2.26
-          - unixodbc
-          - unixodbc-dev
-    env: 
-      - DESC="trusty/gcc-4.8/bintuils-2.26 build"
-
-    before_script:
-      - export TZ=Asia/Harbin
-      - date
-      - cd ${TRAVIS_BUILD_DIR}
-      - mkdir debug
-      - cd debug
-
-    script:
-      - cmake .. > /dev/null
-      - export PATH=/usr/lib/binutils-2.26/bin:$PATH && make
-
-  - os: linux
-    dist: bionic
-    language: c
-    compiler: clang
-    env: DESC="linux/clang build"
-    git:
-      - depth: 1
-
-    addons:
-      apt:
-        packages:
-          - build-essential
-          - cmake
-          - unixodbc
-          - unixodbc-dev
-
-    before_script:
-      - export TZ=Asia/Harbin
-      - date
-      - cd ${TRAVIS_BUILD_DIR}
-      - mkdir debug
-      - cd debug
-
-    script:
-      - cmake .. > /dev/null
-      - make  > /dev/null
-
-  - os: linux
-    arch: arm64
-    dist: bionic
-    language: c
-    compiler: clang
-    env: DESC="arm64 linux/clang build"
-    git:
-      - depth: 1
-
-    addons:
-      apt:
-        packages:
-          - build-essential
-          - cmake
-
-    before_script:
-      - export TZ=Asia/Harbin
-      - date
-      - cd ${TRAVIS_BUILD_DIR}
-      - mkdir debug
-      - cd debug
-
-    script:
-      - if [ "${TRAVIS_CPU_ARCH}" == "arm64" ]; then
-         cmake .. -DCPUTYPE=aarch64 > /dev/null;
-        else
-         cmake .. > /dev/null;
-        fi
-      - make > /dev/null
-
-  - os: linux
-    arch: arm64
-    dist: xenial
-    language: c
-    git:
-      - depth: 1
-
-    addons:
-      apt:
-        packages:
-          - build-essential
-          - cmake
-          - unixodbc
-          - unixodbc-dev
-    env:
-      - DESC="arm64 xenial build"
-
-    before_script:
-      - export TZ=Asia/Harbin
-      - date
-      - cd ${TRAVIS_BUILD_DIR}
-      - mkdir debug
-      - cd debug
-
-    script:
-      - if [ "${TRAVIS_CPU_ARCH}" == "arm64" ]; then
-         cmake .. -DCPUTYPE=aarch64 > /dev/null;
-        else
-         cmake .. > /dev/null;
-        fi
-      - make > /dev/null
-
-  - os: osx
-    osx_image: xcode11.4
-    language: c
-    compiler: clang
-    env: DESC="mac/clang build"
-    git:
-      - depth: 1
-    addons:
-      homebrew:
-        - cmake
-        - unixodbc
-
-    script:
-      - cd ${TRAVIS_BUILD_DIR}
-      - mkdir debug
-      - cd debug
-      - cmake .. > /dev/null
-      - make > /dev/null
diff --git a/src/plugins/http/inc/httpInt.h b/src/plugins/http/inc/httpInt.h
index 634468f3ccfd041300e0b99c728a8fb6a9b8fbae..0a5822b90893861eb12aea756bf877bc81730413 100644
--- a/src/plugins/http/inc/httpInt.h
+++ b/src/plugins/http/inc/httpInt.h
@@ -171,7 +171,7 @@ typedef struct HttpThread {
   EpollFd         pollFd;
   int32_t         numOfContexts;
   int32_t         threadId;
-  char            label[HTTP_LABEL_SIZE];
+  char            label[HTTP_LABEL_SIZE << 1];
   bool (*processData)(HttpContext *pContext);
 } HttpThread;