diff --git a/.appveyor.yml b/.appveyor.yml
index fe4816688b..ee1dc91767 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 0000000000..e7ae6ebbda
--- /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/src/plugins/http/inc/httpInt.h b/src/plugins/http/inc/httpInt.h
index 634468f3cc..0a5822b908 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;