libevent源码：libevent-2.1.8-stable
Android Studio版本：Android Studio Electric Eel | 2022.1.1 Patch 2
AVD虚拟机为x86.

https://developer.android.google.cn/studio/run/emulator-networking?hl=zh-cn#connecting

大体步骤：

1.在wsl中编译libevent-2.1.8-stable源码，
2.将编译后的libevent所有内容复制到JNI目录中，编译动态库的时候，有时需要.o文件
F:\AndroidStudioProjects\MyApplication2\JNI
3.在JNI中创建Android.mk， Application.mk两个文件,指定平台是x86。如果用到curl库，也需要用x86
4.在Window powershell中使用ndk-build指令编译动态库，包含libevent.so和jni用到的动态库。注意在编译的动态库的时候会出现大量未定义符合的错误，需要在Android.mk中增加一些.c文件。有时也需要将event-config.h一些不是目标机架构的功能给关掉。要根据编译的平台是x86还是armebi来确定。有些错误还需要修改libevent源码，中间搞得有些头大。哈哈
5.在android studio创建app工程，该工程包含app界面和java调用cpp代码的中间文件。最终在jni中调用cpp文件生成http server。
6.编译android studio工程文件，并运行虚拟机，从AVD的浏览器访问到libevent httpserver,最终可以看到AVD中的目录。

app界面只有一个button,点击后会运行app。
app运行log如下：

AVD浏览器：

下面是一些要注意的细节：

1. 在app同级的build.gradle文件中设置： abiFilters “x86”
2. 查找虚拟机ip地址，并设定服务器绑定ip为虚拟机的本地IP。
   PS F:\Android_Sdk\platform-tools> ./adb devices
   List of devices attached
   emulator-5554 device

PS F:\Android_Sdk\platform-tools> adb -s emulator-5554
Android Debug Bridge version 1.0.41
Version 34.0.1-9680074

PS F:\Android_Sdk\platform-tools> adb -s emulator-5554 shell
root@generic_x86:/ # getprop
[net.gprs.local-ip]: [10.0.2.15]

3. 设置目录为手机的根目录“/”
   evhttp_set_gencb(http, send_document_cb, (void *) “/”);
   在手机的浏览器输入：
   http://10.0.2.15:7777
   可以看到手机中的文件：

4. Android.mk文件如下：
   LOCAL_PATH := $(call my-dir)
   ################################for .a ################

include $(CLEAR_VARS)

#LOCAL_ARM_MODE := arm

LOCAL_MODULE := libevent

LIB_SRC := event.c
evthread.c
buffer.c
bufferevent.c
bufferevent_filter.c
bufferevent_pair.c
listener.c
bufferevent_ratelim.c
evmap.c
log.c
strlcpy.c
evutil.c
evutil_time.c
evutil_rand.c
select.c
poll.c
epoll.c
signal.c
event_tagging.c
http.c
evdns.c
evrpc.c
bufferevent_sock.c
evthread_pthread.c

LOCAL_SRC_FILES := $(LIB_SRC)

LOCAL_C_INCLUDES := $(LOCAL_PATH)
$(LOCAL_PATH)/include
$(LOCAL_PATH)/compat

LOCAL_CFLAGS += -static -fPIC

include $(BUILD_SHARED_LIBRARY)
##############################################################
include $(CLEAR_VARS)

libcurl.a

LOCAL_MODULE := libcurl
LOCAL_SRC_FILES := libcurl.a
include $(PREBUILT_STATIC_LIBRARY)

include $(CLEAR_VARS)

#libtestjni.so
LOCAL_MODULE := testjni

LOCAL_SRC_FILES := test.cpp cJSON.cpp login.cpp #$(LOCAL_PATH)/sample/http-server.c
LOCAL_SHARED_LIBRARIES := libevent
LOCAL_LDLIBS := -llog -lz
LOCAL_STATIC_LIBRARIES := libcurl
LOCAL_C_INCLUDES := $(LOCAL_PATH)/include/event2 $(LOCAL_PATH)/compat $(LOCAL_PATH)/include

include $(BUILD_SHARED_LIBRARY)

5. Application.mk
   APP_STL := c++_static
   APP_CPPFLAGS := -frtti -std=c++11
   APP_ABI := x86
   #APP_ABI := armeabi-v7a x86

6.event-config.h
/* event2/event-config.h
*

• This file was generated by autoconf when libevent was built, and post-
• processed by Libevent so that its macros would have a uniform prefix.
• DO NOT EDIT THIS FILE.
• Do not rely on macros in this file existing in later versions.
  */

#ifndef EVENT2_EVENT_CONFIG_H_INCLUDED_
#define EVENT2_EVENT_CONFIG_H_INCLUDED_

/* config.h. Generated from config.h.in by configure. /
/ config.h.in. Generated from configure.ac by autoheader. */

/* Define if libevent should build without support for a debug mode /
/ #undef EVENT__DISABLE_DEBUG_MODE */

/* Define if libevent should not allow replacing the mm functions /
/ #undef EVENT__DISABLE_MM_REPLACEMENT */

/* Define if libevent should not be compiled with thread support /
/ #undef EVENT__DISABLE_THREAD_SUPPORT */

/* Define to 1 if you have the `accept4’ function. */
//#define EVENT__HAVE_ACCEPT4 1

/* Define to 1 if you have the arc4random' function. */ /* #undef EVENT__HAVE_ARC4RANDOM */ #define EVENT__HAVE_ARC4RANDOM /* Define to 1 if you have the arc4random_buf’ function. /
/ #undef EVENT__HAVE_ARC4RANDOM_BUF /
#define EVENT__HAVE_ARC4RANDOM_BUF
/ Define to 1 if you have the <arpa/inet.h> header file. */
#define EVENT__HAVE_ARPA_INET_H 1

/* Define to 1 if you have the `clock_gettime’ function. */
#define EVENT__HAVE_CLOCK_GETTIME 1

/* Define to 1 if you have the declaration of `CTL_KERN’, and to 0 if you
don’t. */
#define EVENT__HAVE_DECL_CTL_KERN 1

/* Define to 1 if you have the declaration of `KERN_ARND’, and to 0 if you
don’t. */
#define EVENT__HAVE_DECL_KERN_ARND 0

/* Define to 1 if you have the declaration of `KERN_RANDOM’, and to 0 if you
don’t. */
#define EVENT__HAVE_DECL_KERN_RANDOM 1

/* Define to 1 if you have the declaration of `RANDOM_UUID’, and to 0 if you
don’t. */
#define EVENT__HAVE_DECL_RANDOM_UUID 1

/* Define if /dev/poll is available /
/ #undef EVENT__HAVE_DEVPOLL */

/* Define to 1 if you have the <dlfcn.h> header file. */
#define EVENT__HAVE_DLFCN_H 1

/* Define if your system supports the epoll system calls */
//#define EVENT__HAVE_EPOLL 1

/* Define to 1 if you have the `epoll_create1’ function. */
//#define EVENT__HAVE_EPOLL_CREATE1 1

/* Define to 1 if you have the `epoll_ctl’ function. */
//#define EVENT__HAVE_EPOLL_CTL 1

/* Define to 1 if you have the <errno.h> header file. */
#define EVENT__HAVE_ERRNO_H 1

/* Define to 1 if you have ERR_remove_thread_stat(). */
#define EVENT__HAVE_ERR_REMOVE_THREAD_STATE 1

/* Define to 1 if you have the `eventfd’ function. */
#define EVENT__HAVE_EVENTFD 1

/* Define if your system supports event ports /
/ #undef EVENT__HAVE_EVENT_PORTS */

/* Define to 1 if you have the `fcntl’ function. */
#define EVENT__HAVE_FCNTL 1

/* Define to 1 if you have the <fcntl.h> header file. */
#define EVENT__HAVE_FCNTL_H 1

/* Define to 1 if the system has the type `fd_mask’. */
#define EVENT__HAVE_FD_MASK 1

/* Do we have getaddrinfo()? */
#define EVENT__HAVE_GETADDRINFO 1

/* Define to 1 if you have the `getegid’ function. */
#define EVENT__HAVE_GETEGID 1

/* Define to 1 if you have the `geteuid’ function. */
#define EVENT__HAVE_GETEUID 1

/* Define this if you have any gethostbyname_r() /
/ #undef EVENT__HAVE_GETHOSTBYNAME_R */

/* Define this if gethostbyname_r takes 3 arguments /
/ #undef EVENT__HAVE_GETHOSTBYNAME_R_3_ARG */

/* Define this if gethostbyname_r takes 5 arguments /
/ #undef EVENT__HAVE_GETHOSTBYNAME_R_5_ARG */

/* Define this if gethostbyname_r takes 6 arguments /
/ #undef EVENT__HAVE_GETHOSTBYNAME_R_6_ARG */

/* Define to 1 if you have the `getifaddrs’ function. */
//#define EVENT__HAVE_GETIFADDRS 1

/* Define to 1 if you have the `getnameinfo’ function. */
#define EVENT__HAVE_GETNAMEINFO 1

/* Define to 1 if you have the `getprotobynumber’ function. */
#define EVENT__HAVE_GETPROTOBYNUMBER 1

/* Define to 1 if you have the `getservbyname’ function. */
#define EVENT__HAVE_GETSERVBYNAME 1

/* Define to 1 if you have the `gettimeofday’ function. */
#define EVENT__HAVE_GETTIMEOFDAY 1

/* Define to 1 if you have the <ifaddrs.h> header file. */
#define EVENT__HAVE_IFADDRS_H 1

/* Define to 1 if you have the `inet_ntop’ function. */
#define EVENT__HAVE_INET_NTOP 1

/* Define to 1 if you have the `inet_pton’ function. */
#define EVENT__HAVE_INET_PTON 1

/* Define to 1 if you have the <inttypes.h> header file. */
#define EVENT__HAVE_INTTYPES_H 1

/* Define to 1 if you have the `issetugid’ function. /
/ #undef EVENT__HAVE_ISSETUGID */

/* Define to 1 if you have the `kqueue’ function. /
/ #undef EVENT__HAVE_KQUEUE */

/* Define if the system has zlib /
/ #undef EVENT__HAVE_LIBZ */

/* Define to 1 if you have the `mach_absolute_time’ function. /
/ #undef EVENT__HAVE_MACH_ABSOLUTE_TIME */

/* Define to 1 if you have the <mach/mach_time.h> header file. /
/ #undef EVENT__HAVE_MACH_MACH_TIME_H */

/* Define to 1 if you have the <memory.h> header file. */
#define EVENT__HAVE_MEMORY_H 1

/* Define to 1 if you have the `mmap’ function. */
#define EVENT__HAVE_MMAP 1

/* Define to 1 if you have the `nanosleep’ function. */
#define EVENT__HAVE_NANOSLEEP 1

/* Define to 1 if you have the <netdb.h> header file. */
#define EVENT__HAVE_NETDB_H 1

/* Define to 1 if you have the <netinet/in6.h> header file. /
/ #undef EVENT__HAVE_NETINET_IN6_H */

/* Define to 1 if you have the <netinet/in.h> header file. */
#define EVENT__HAVE_NETINET_IN_H 1

/* Define to 1 if you have the <netinet/tcp.h> header file. */
#define EVENT__HAVE_NETINET_TCP_H 1

/* Define if the system has openssl */
#define EVENT__HAVE_OPENSSL 1

/* Define to 1 if you have the `pipe’ function. */
#define EVENT__HAVE_PIPE 1

/* Define to 1 if you have the `pipe2’ function. */
#define EVENT__HAVE_PIPE2 1

/* Define to 1 if you have the `poll’ function. */
#define EVENT__HAVE_POLL 1

/* Define to 1 if you have the <poll.h> header file. */
#define EVENT__HAVE_POLL_H 1

/* Define to 1 if you have the `port_create’ function. /
/ #undef EVENT__HAVE_PORT_CREATE */

/* Define to 1 if you have the <port.h> header file. /
/ #undef EVENT__HAVE_PORT_H */

/* Define if you have POSIX threads libraries and header files. /
/ #undef EVENT__HAVE_PTHREAD */

/* Define if we have pthreads on this system */
#define EVENT__HAVE_PTHREADS 1

/* Define to 1 if you have the `putenv’ function. */
#define EVENT__HAVE_PUTENV 1

/* Define to 1 if the system has the type `sa_family_t’. */
#define EVENT__HAVE_SA_FAMILY_T 1

/* Define to 1 if you have the `select’ function. */
#define EVENT__HAVE_SELECT 1

/* Define to 1 if you have the `sendfile’ function. */
#define EVENT__HAVE_SENDFILE 1

/* Define to 1 if you have the `setenv’ function. */
#define EVENT__HAVE_SETENV 1

/* Define if F_SETFD is defined in <fcntl.h> */
#define EVENT__HAVE_SETFD 1

/* Define to 1 if you have the `setrlimit’ function. */
#define EVENT__HAVE_SETRLIMIT 1

/* Define to 1 if you have the `sigaction’ function. */
#define EVENT__HAVE_SIGACTION 1

/* Define to 1 if you have the `signal’ function. */
#define EVENT__HAVE_SIGNAL 1

/* Define to 1 if you have the `splice’ function. */
#define EVENT__HAVE_SPLICE 1

/* Define to 1 if you have the <stdarg.h> header file. */
#define EVENT__HAVE_STDARG_H 1

/* Define to 1 if you have the <stddef.h> header file. */
#define EVENT__HAVE_STDDEF_H 1

/* Define to 1 if you have the <stdint.h> header file. */
#define EVENT__HAVE_STDINT_H 1

/* Define to 1 if you have the <stdlib.h> header file. */
#define EVENT__HAVE_STDLIB_H 1

/* Define to 1 if you have the <strings.h> header file. */
#define EVENT__HAVE_STRINGS_H 1

/* Define to 1 if you have the <string.h> header file. */
#define EVENT__HAVE_STRING_H 1

/* Define to 1 if you have the `strlcpy’ function. /
/ #undef EVENT__HAVE_STRLCPY */

/* Define to 1 if you have the `strsep’ function. */
#define EVENT__HAVE_STRSEP 1

/* Define to 1 if you have the `strtok_r’ function. */
#define EVENT__HAVE_STRTOK_R 1

/* Define to 1 if you have the `strtoll’ function. */
#define EVENT__HAVE_STRTOLL 1

/* Define to 1 if the system has the type `struct addrinfo’. */
#define EVENT__HAVE_STRUCT_ADDRINFO 1

/* Define to 1 if the system has the type `struct in6_addr’. */
#define EVENT__HAVE_STRUCT_IN6_ADDR 1

/* Define to 1 if s6_addr16' is a member of struct in6_addr’. */
#define EVENT__HAVE_STRUCT_IN6_ADDR_S6_ADDR16 1

/* Define to 1 if s6_addr32' is a member of struct in6_addr’. */
#define EVENT__HAVE_STRUCT_IN6_ADDR_S6_ADDR32 1

/* Define to 1 if the system has the type `struct sockaddr_in6’. */
#define EVENT__HAVE_STRUCT_SOCKADDR_IN6 1

/* Define to 1 if sin6_len' is a member of struct sockaddr_in6’. /
/ #undef EVENT__HAVE_STRUCT_SOCKADDR_IN6_SIN6_LEN */

/* Define to 1 if sin_len' is a member of struct sockaddr_in’. /
/ #undef EVENT__HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */

/* Define to 1 if the system has the type `struct sockaddr_storage’. */
#define EVENT__HAVE_STRUCT_SOCKADDR_STORAGE 1

/* Define to 1 if ss_family' is a member of struct sockaddr_storage’. */
#define EVENT__HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY 1

/* Define to 1 if __ss_family' is a member of struct sockaddr_storage’. /
/ #undef EVENT__HAVE_STRUCT_SOCKADDR_STORAGE___SS_FAMILY */

/* Define to 1 if the system has the type `struct so_linger’. /
/ #undef EVENT__HAVE_STRUCT_SO_LINGER */

/* Define to 1 if you have the `sysctl’ function. */
#define EVENT__HAVE_SYSCTL 1

/* Define to 1 if you have the <sys/devpoll.h> header file. /
/ #undef EVENT__HAVE_SYS_DEVPOLL_H */

/* Define to 1 if you have the <sys/epoll.h> header file. */
#define EVENT__HAVE_SYS_EPOLL_H 1

/* Define to 1 if you have the <sys/eventfd.h> header file. */
#define EVENT__HAVE_SYS_EVENTFD_H 1

/* Define to 1 if you have the <sys/event.h> header file. /
/ #undef EVENT__HAVE_SYS_EVENT_H */

/* Define to 1 if you have the <sys/ioctl.h> header file. */
#define EVENT__HAVE_SYS_IOCTL_H 1

/* Define to 1 if you have the <sys/mman.h> header file. */
#define EVENT__HAVE_SYS_MMAN_H 1

/* Define to 1 if you have the <sys/param.h> header file. */
#define EVENT__HAVE_SYS_PARAM_H 1

/* Define to 1 if you have the <sys/queue.h> header file. */
#define EVENT__HAVE_SYS_QUEUE_H 1

/* Define to 1 if you have the <sys/resource.h> header file. */
#define EVENT__HAVE_SYS_RESOURCE_H 1

/* Define to 1 if you have the <sys/select.h> header file. */
#define EVENT__HAVE_SYS_SELECT_H 1

/* Define to 1 if you have the <sys/sendfile.h> header file. */
#define EVENT__HAVE_SYS_SENDFILE_H 1

/* Define to 1 if you have the <sys/socket.h> header file. */
#define EVENT__HAVE_SYS_SOCKET_H 1

/* Define to 1 if you have the <sys/stat.h> header file. */
#define EVENT__HAVE_SYS_STAT_H 1

/* Define to 1 if you have the <sys/sysctl.h> header file. */
//#define EVENT__HAVE_SYS_SYSCTL_H 1

/* Define to 1 if you have the <sys/timerfd.h> header file. */
#define EVENT__HAVE_SYS_TIMERFD_H 1

/* Define to 1 if you have the <sys/time.h> header file. */
#define EVENT__HAVE_SYS_TIME_H 1

/* Define to 1 if you have the <sys/types.h> header file. */
#define EVENT__HAVE_SYS_TYPES_H 1

/* Define to 1 if you have the <sys/uio.h> header file. */
#define EVENT__HAVE_SYS_UIO_H 1

/* Define to 1 if you have the <sys/wait.h> header file. */
#define EVENT__HAVE_SYS_WAIT_H 1

/* Define if TAILQ_FOREACH is defined in <sys/queue.h> */
#define EVENT__HAVE_TAILQFOREACH 1

/* Define if timeradd is defined in <sys/time.h> */
#define EVENT__HAVE_TIMERADD 1

/* Define if timerclear is defined in <sys/time.h> */
#define EVENT__HAVE_TIMERCLEAR 1

/* Define if timercmp is defined in <sys/time.h> */
#define EVENT__HAVE_TIMERCMP 1

/* Define to 1 if you have the `timerfd_create’ function. */
#define EVENT__HAVE_TIMERFD_CREATE 1

/* Define if timerisset is defined in <sys/time.h> */
#define EVENT__HAVE_TIMERISSET 1

/* Define to 1 if the system has the type `uint16_t’. */
#define EVENT__HAVE_UINT16_T 1

/* Define to 1 if the system has the type `uint32_t’. */
#define EVENT__HAVE_UINT32_T 1

/* Define to 1 if the system has the type `uint64_t’. */
#define EVENT__HAVE_UINT64_T 1

/* Define to 1 if the system has the type `uint8_t’. */
#define EVENT__HAVE_UINT8_T 1

/* Define to 1 if the system has the type `uintptr_t’. */
#define EVENT__HAVE_UINTPTR_T 1

/* Define to 1 if you have the `umask’ function. */
#define EVENT__HAVE_UMASK 1

/* Define to 1 if you have the <unistd.h> header file. */
#define EVENT__HAVE_UNISTD_H 1

/* Define to 1 if you have the `unsetenv’ function. */
#define EVENT__HAVE_UNSETENV 1

/* Define to 1 if you have the `usleep’ function. */
#define EVENT__HAVE_USLEEP 1

/* Define to 1 if you have the `vasprintf’ function. */
#define EVENT__HAVE_VASPRINTF 1

/* Define if waitpid() supports WNOWAIT /
/ #undef EVENT__HAVE_WAITPID_WITH_WNOWAIT */

/* Define if kqueue works correctly with pipes /
/ #undef EVENT__HAVE_WORKING_KQUEUE */

/* Define to 1 if you have the <zlib.h> header file. /
/ #undef EVENT__HAVE_ZLIB_H */

/* Define to the sub-directory where libtool stores uninstalled libraries. */
#define EVENT__LT_OBJDIR “.libs/”

/* Numeric representation of the version */
#define EVENT__NUMERIC_VERSION 0x02010800

/* Name of package */
#define EVENT__PACKAGE “libevent”

/* Define to the address where bug reports for this package should be sent. */
#define EVENT__PACKAGE_BUGREPORT “”

/* Define to the full name of this package. */
#define EVENT__PACKAGE_NAME “libevent”

/* Define to the full name and version of this package. */
#define EVENT__PACKAGE_STRING “libevent 2.1.8-stable”

/* Define to the one symbol short name of this package. */
#define EVENT__PACKAGE_TARNAME “libevent”

/* Define to the home page for this package. */
#define EVENT__PACKAGE_URL “”

/* Define to the version of this package. */
#define EVENT__PACKAGE_VERSION “2.1.8-stable”

/* Define to necessary symbol if this constant uses a non-standard name on
your system. /
/ #undef EVENT__PTHREAD_CREATE_JOINABLE */

/* The size of `int’, as computed by sizeof. */
#define EVENT__SIZEOF_INT 4

/* The size of `long’, as computed by sizeof. */
#define EVENT__SIZEOF_LONG 8

/* The size of `long long’, as computed by sizeof. */
#define EVENT__SIZEOF_LONG_LONG 8

/* The size of `off_t’, as computed by sizeof. */
#define EVENT__SIZEOF_OFF_T 8

/* The size of `pthread_t’, as computed by sizeof. */
#define EVENT__SIZEOF_PTHREAD_T 8

/* The size of `short’, as computed by sizeof. */
#define EVENT__SIZEOF_SHORT 2

/* The size of `size_t’, as computed by sizeof. */
#define EVENT__SIZEOF_SIZE_T 8

/* The size of `void *', as computed by sizeof. */
#define EVENT__SIZEOF_VOID_P 8

/* Define to 1 if you have the ANSI C header files. */
#define EVENT__STDC_HEADERS 1

/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
#define EVENT__TIME_WITH_SYS_TIME 1

/* Enable extensions on AIX 3, Interix. */
#ifndef EVENT___ALL_SOURCE

define EVENT___ALL_SOURCE 1

#endif
/* Enable GNU extensions on systems that have them. */
#ifndef EVENT___GNU_SOURCE

define EVENT___GNU_SOURCE 1

#endif
/* Enable threading extensions on Solaris. */
#ifndef EVENT___POSIX_PTHREAD_SEMANTICS

define EVENT___POSIX_PTHREAD_SEMANTICS 1

#endif
/* Enable extensions on HP NonStop. */
#ifndef EVENT___TANDEM_SOURCE

define EVENT___TANDEM_SOURCE 1

#endif
/* Enable general extensions on Solaris. */
#ifndef EVENT____EXTENSIONS__

define EVENT____EXTENSIONS__ 1

#endif

/* Version number of package */
#define EVENT__VERSION “2.1.8-stable”

/* Enable large inode numbers on Mac OS X 10.5. */
#ifndef EVENT___DARWIN_USE_64_BIT_INODE

define EVENT___DARWIN_USE_64_BIT_INODE 1

#endif

/* Number of bits in a file offset, on hosts where this is settable. /
/ #undef EVENT___FILE_OFFSET_BITS */

/* Define for large files, on AIX-style hosts. /
/ #undef EVENT___LARGE_FILES */

/* Define to 1 if on MINIX. /
/ #undef EVENT___MINIX */

/* Define to 2 if the system does not provide POSIX.1 features except with
this defined. /
/ #undef EVENT___POSIX_1_SOURCE */

/* Define to 1 if you need to in order for `stat’ and other things to work. /
/ #undef EVENT___POSIX_SOURCE */

/* Define to appropriate substitue if compiler doesnt have func /
/ #undef EVENT____func__ */

/* Define to empty if `const’ does not conform to ANSI C. /
/ #undef EVENT__const */

/* Define to __inline__' or __inline’ if that’s what the C compiler
calls it, or to nothing if ‘inline’ is not supported under any name. /
#ifndef EVENT____cplusplus
/ #undef EVENT__inline */
#endif

/* Define to `int’ if <sys/types.h> does not define. /
/ #undef EVENT__pid_t */

/* Define to `unsigned int’ if <sys/types.h> does not define. /
/ #undef EVENT__size_t */

/* Define to unsigned int if you dont have it /
/ #undef EVENT__socklen_t */

/* Define to `int’ if <sys/types.h> does not define. /
/ #undef EVENT__ssize_t */

#endif /* event2/event-config.h */

下面是虚拟机网络重定向设置，想从电脑端看到手机中的内容，还没有成功，要继续实验。

https://developer.android.google.cn/studio/run/emulator-networking?hl=zh-cn

PS F:\Android_Sdk\platform-tools> adb -s emulator-5554 forward tcp:6665 tcp:6666
6665

https://blog.csdn.net/weixin_27038261/article/details/117726241?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522168119961316800180638618%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fall.%2522%257D&request_id=168119961316800180638618&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2_allfirst_rank_ecpm_v1~rank_v31_ecpm-2-117726241-null-null.142^v82insert_down38,201^v4add_ask,239^v2insert_chatgpt&utm_term=%E4%B8%BB%E6%9C%BA%E5%90%8Candroid%E8%99%9A%E6%8B%9F%E6%9C%BA%E9%80%9A%E4%BF%A1&spm=1018.2226.3001.4187
1)PC作为客户端，模拟器1为主机

本机端：
michael@SD-20220518ZLPG:~$ curl http://127.0.0.1:6665/dump
curl: (52) Empty reply from server

虚拟机端：