OpenHarmony 使用httplib创建http-server失败

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【背景】

根据这份指引：
https://gitee.com/openharmony-si ... cs/hap_integrate.md

已编译好OpenHarmony版本httplib库

【1.尝试在devecostudio中调用httplib】

native 调用httplib主要代码如下：

#include "napi/native_api.h"
#include <hilog/log.h>
#include <stdio.h>
#include <iostream>
#include "httplib.h"
#define LOG_PRINT_DOMAIN 0xFF00
......
Server svr;
svr.Get("/hello", [](const Request &req, Response &res) {
res.set_content("Hello World!", "text/plain");
});
if (svr.listen("0.0.0.0", 8080)) {
OH_LOG_Print(LOG_APP, LOG_INFO, LOG_PRINT_DOMAIN, "OPENHARMONY-SERVER","Server is running at http://localhost:8080");
} else {
OH_LOG_Print(LOG_APP, LOG_INFO, LOG_PRINT_DOMAIN, "OPENHARMONY-SERVER","Failed to start server");
}
....

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报错内容：
E C015b0/NetsysNativeService: [HookSocket-(netsys_sock_client.cpp:46)]musl create socket failed, errno 1
I A0ff00/OPENHARMONY-SERVER: Failed to start server

【2.单独写一个测试文件】

server.cpp:

/* server.cpp*/
#include <stdio.h>
#include <iostream>
#include "httplib.h"
using namespace httplib;
void http_callback(const Request& req, Response& resp)
{
(void)req;
std::string body = "<html>linux so easy</html>";
resp.set_content(body.c_str(),body.size(),"text/html");
}
int main()
{
Server svr;
svr.Get("/aaa",http_callback);
svr.listen("0.0.0.0",19998);
return 0;
}

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CMakeLists.txt:

cmake_minimum_required(VERSION 3.1)
project(httplib)
add_executable(httplib server.cpp)
target_link_libraries(httplib PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/brotli/${OHOS_ARCH}/lib/libbrotlicommon-static.a)
target_link_libraries(httplib PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/brotli/${OHOS_ARCH}/lib/libbrotlidec-static.a)
target_link_libraries(httplib PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/brotli/${OHOS_ARCH}/lib/libbrotlienc-static.a)
target_link_libraries(httplib PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/cpp-httplib/${OHOS_ARCH}/lib/libhttplib.a)
target_link_libraries(httplib PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/googletest/${OHOS_ARCH}/lib/libgmock.a)
target_link_libraries(httplib PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/googletest/${OHOS_ARCH}/lib/libgmock_main.a)
target_link_libraries(httplib PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/googletest/${OHOS_ARCH}/lib/libgtest.a)
target_link_libraries(httplib PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/googletest/${OHOS_ARCH}/lib/libgtest_main.a)
target_link_libraries(httplib PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/openssl/${OHOS_ARCH}/lib/libcrypto.a)
target_link_libraries(httplib PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/openssl/${OHOS_ARCH}/lib/libssl.a)
target_link_libraries(httplib PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/zlib/${OHOS_ARCH}/lib/libz.a)
target_include_directories(httplib PRIVATE brotli/${OHOS_ARCH}/include)
target_include_directories(httplib PRIVATE cpp-httplib/${OHOS_ARCH}/include)
target_include_directories(httplib PRIVATE googletest/${OHOS_ARCH}/include)
target_include_directories(httplib PRIVATE openssl/${OHOS_ARCH}/include)
target_include_directories(httplib PRIVATE zlib/${OHOS_ARCH}/include)

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编译指令：/home/openharmony/ohos-sdk/linux/native/build-tools/cmake/bin/cmake -DCMAKE_TOOLCHAIN_FILE=/home/openharmony/ohos-sdk/linux/native/build/cmake/ohos.toolchain.cmake -stdlib=libc++ -DOHOS_ARCH=arm64-v8a .. -L //加不加-stdlib=libc++对生成的文件没什么影响
输出：

root@LAPTOP-U9BLNV2M:/home/hahman/httplib/tpc_c_cplusplus/lycium/usr/build# /home/openharmony/ohos-sdk/linux/native/build-tools/cmake/bin/cmake -DCMAKE_TOOLCHAIN_FILE=/home/openharmony/ohos-sdk/linux/native/build/cmake/ohos.toolchain.cmake -stdlib=libc++ -DOHOS_ARCH=arm64-v8a .. -L
-- The C compiler identification is Clang 15.0.4
-- The CXX compiler identification is Clang 15.0.4
-- Check for working C compiler: /home/openharmony/ohos-sdk/linux/native/llvm/bin/clang
-- Check for working C compiler: /home/openharmony/ohos-sdk/linux/native/llvm/bin/clang -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /home/openharmony/ohos-sdk/linux/native/llvm/bin/clang++
-- Check for working CXX compiler: /home/openharmony/ohos-sdk/linux/native/llvm/bin/clang++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /home/hahman/httplib/tpc_c_cplusplus/lycium/usr/build
-- Cache values
CMAKE_ASM_FLAGS:STRING=
CMAKE_ASM_FLAGS_DEBUG:STRING=
CMAKE_ASM_FLAGS_RELEASE:STRING=
CMAKE_BUILD_TYPE:STRING=
CMAKE_INSTALL_PREFIX:PATH=/usr/local
CMAKE_TOOLCHAIN_FILE:FILEPATH=/home/openharmony/ohos-sdk/linux/native/build/cmake/ohos.toolchain.cmake
root@LAPTOP-U9BLNV2M:/home/hahman/httplib/tpc_c_cplusplus/lycium/usr/build# make
make[1]: Entering directory '/home/hahman/httplib/tpc_c_cplusplus/lycium/usr/build'
make[2]: Entering directory '/home/hahman/httplib/tpc_c_cplusplus/lycium/usr/build'
Scanning dependencies of target httplib
make[2]: Leaving directory '/home/hahman/httplib/tpc_c_cplusplus/lycium/usr/build'
make[2]: Entering directory '/home/hahman/httplib/tpc_c_cplusplus/lycium/usr/build'
[ 50%] Building CXX object CMakeFiles/httplib.dir/server.cpp.o
clang++: warning: argument unused during compilation: '--gcc-toolchain=/home/openharmony/ohos-sdk/linux/native/llvm' [-Wunused-command-line-argument]
[100%] Linking CXX executable httplib
make[2]: Leaving directory '/home/hahman/httplib/tpc_c_cplusplus/lycium/usr/build'
[100%] Built target httplib
make[1]: Leaving directory '/home/hahman/httplib/tpc_c_cplusplus/lycium/usr/build

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将httplib推到openharmony开发板上运行，出现以下报错：

# ./httplib
Error loading shared library libc++_shared.so: No such file or directory (needed by ./httplib)
Error relocating ./httplib: _ZNSt4__n112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEED1Ev: symbol not found
Error relocating ./httplib: _ZNSt4__n112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6__initEPKcm: symbol not found
Error relocating ./httplib: _ZdlPv: symbol not found
Error relocating ./httplib: __cxa_allocate_exception: symbol not found
Error relocating ./httplib: _ZNSt20bad_array_new_lengthC1Ev: symbol not found
Error relocating ./httplib: __cxa_throw: symbol not found
Error relocating ./httplib: _Znwm: symbol not found
Error relocating ./httplib: __cxa_begin_catch: symbol not found
Error relocating ./httplib: _ZSt9terminatev: symbol not found
Error relocating ./httplib: _ZNSt4__n112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE9push_backEc: symbol not found
Error relocating ./httplib: _ZNKSt4__n112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7compareEmmPKc: symbol not found
Error relocating ./httplib: _ZNSt4__n18ios_base4initEPv: symbol not found
Error relocating ./httplib: _ZNSt4__n115basic_streambufIcNS_11char_traitsIcEEEC2Ev: symbol not found
Error relocating ./httplib: _ZNKSt4__n18ios_base6getlocEv: symbol not found
Error relocating ./httplib: _ZNKSt4__n16locale9use_facetERNS0_2idE: symbol not found
Error relocating ./httplib: _ZNSt4__n16localeD1Ev: symbol not found
Error relocating ./httplib: _ZNSt4__n115basic_streambufIcNS_11char_traitsIcEEED2Ev: symbol not found
Error relocating ./httplib: _ZNSt4__n113basic_ostreamIcNS_11char_traitsIcEEED2Ev: symbol not found
Error relocating ./httplib: _ZNSt4__n19basic_iosIcNS_11char_traitsIcEEED2Ev: symbol not found
Error relocating ./httplib: _ZNSt4__n112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6appendEPKc: symbol not foun
...

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【3.使用websocket】

目前也在尝试使用websocket创建http server，不知行不行。
https://docs.openharmony.cn/page ... ketserverinstance10

【运行环境】
硬件：RK3588
ROM版本：Openharmony 4.0 Release
DevEvoStudio版本：DevEco Studio 3.1.1 Release
SDK版本：API10 (4.0.10.5)

深开鸿_王石

symbol not found 就是库没找到，你库放哪了，是不是系统默认地方，若不是，自己设置下library path

hocker

我也遇到一样的问题，报 _ZNSt4__n112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEED1Ev 符号库没找到，关键是我在其他库里也没搜索到这个符号的位置，我再找找

OpenHarmony 使用httplib创建http-server失败

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