如何在Xcode中获取当前计算机的IP地址

Question

在测试连接到本地计算机服务器的iPhone应用程序时，我需要输入计算机的本地IP地址而不是localhost，以便使用模拟器以外的设备进行测试。这会让动态IP地址和多个开发人员进行测试时变得烦人。是否有代码片段可以获取正在编译代码的计算机的IP地址，而不是IP运行应用程序的设备的地址（最好是C或Objective-C，而不是Swift）？

Answer 1

1）在Xcode项目的“Build Phases”选项卡中添加一个“Run Script”，其中包含：

export SERVER_IP=`ipconfig getifaddr en0`

注意：将“en0”更改为与您的机器匹配的任何接口。 en0是我机器上的wifi，我的硬线是en3。在终端中执行“ifconfig -a”以获取所有适配器的列表，并查看哪台适合您的计算机

2）转到您的项目文件。单击左侧菜单中的Project本身，然后单击右侧的Build Settings。转到“Apple LLVM 6.0 - 自定义编译器标志”。在“其他C标志”下 - ＆gt; “Debug”定义一个名为 -DSERVER_IP = $ {SERVER_IP}

的新值

这会将构建脚本的结果映射到项目中的#DEFINE

3）在您的代码中使用SERVER_IP就像使用任何其他#DEFINE一样，它将始终具有构建代码的计算机的值。

Answer 2

我通过运行脚本在应用程序的plist中设置计算机的IP地址，然后在代码中读取plist值来实现此功能。

1）在Info.plist文件中，添加一个包含计算机IP地址的键/值对。对于此示例，我们将添加“CompanyNameDevServerIP”键，类型“串”。请注意，此键/值对应该唯一地加上前缀，以便它不会与Apple的键冲突（有关详细信息，请参阅here）。

2）在“构建阶段”选项卡中，添加包含以下内容的运行脚本：

-- No build type selected, default to Debug
-- The C compiler identification is MSVC 18.0.40629.0
-- The CXX compiler identification is MSVC 18.0.40629.0
-- The ASM compiler identification is MSVC
-- Found assembler: C:/Program Files (x86)/Microsoft Visual Studio 12.0/VC/bin/cl.exe
-- Check for working C compiler using: Visual Studio 12 2013
-- Check for working C compiler using: Visual Studio 12 2013 -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler using: Visual Studio 12 2013
-- Check for working CXX compiler using: Visual Studio 12 2013 -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Warning: Did not find file Compiler/MSVC-ASM
-- Looking for dirent.h
-- Looking for dirent.h - not found
-- Looking for dlfcn.h
-- Looking for dlfcn.h - not found
-- Looking for errno.h
-- Looking for errno.h - found
-- Looking for execinfo.h
-- Looking for execinfo.h - not found
-- Looking for fcntl.h
-- Looking for fcntl.h - found
-- Looking for inttypes.h
-- Looking for inttypes.h - found
-- Looking for limits.h
-- Looking for limits.h - found
-- Looking for link.h
-- Looking for link.h - not found
-- Looking for malloc.h
-- Looking for malloc.h - found
-- Looking for malloc/malloc.h
-- Looking for malloc/malloc.h - not found
-- Looking for ndir.h
-- Looking for ndir.h - not found
-- Looking for signal.h
-- Looking for signal.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for sys/dir.h
-- Looking for sys/dir.h - not found
-- Looking for sys/ioctl.h
-- Looking for sys/ioctl.h - not found
-- Looking for sys/mman.h
-- Looking for sys/mman.h - not found
-- Looking for sys/ndir.h
-- Looking for sys/ndir.h - not found
-- Looking for sys/param.h
-- Looking for sys/param.h - not found
-- Looking for sys/resource.h
-- Looking for sys/resource.h - not found
-- Looking for sys/stat.h
-- Looking for sys/stat.h - found
-- Looking for sys/time.h
-- Looking for sys/time.h - not found
-- Looking for sys/uio.h
-- Looking for sys/uio.h - not found
-- Looking for termios.h
-- Looking for termios.h - not found
-- Looking for unistd.h
-- Looking for unistd.h - not found
-- Looking for utime.h
-- Looking for utime.h - not found
-- Looking for valgrind/valgrind.h
-- Looking for valgrind/valgrind.h - not found
-- Looking for zlib.h
-- Looking for zlib.h - not found
-- Looking for fenv.h
-- Looking for fenv.h - found
-- Looking for FE_ALL_EXCEPT
-- Looking for FE_ALL_EXCEPT - found
-- Looking for FE_INEXACT
-- Looking for FE_INEXACT - found
-- Looking for mach/mach.h
-- Looking for mach/mach.h - not found
-- Looking for mach-o/dyld.h
-- Looking for mach-o/dyld.h - not found
-- Looking for histedit.h
-- Looking for histedit.h - not found
-- Performing Test HAVE_CXXABI_H
-- Performing Test HAVE_CXXABI_H - Failed
-- Looking for arc4random
-- Looking for arc4random - not found
-- Looking for backtrace
-- Looking for backtrace - not found
-- Looking for getpagesize
-- Looking for getpagesize - not found
-- Looking for getrusage
-- Looking for getrusage - not found
-- Looking for setrlimit
-- Looking for setrlimit - not found
-- Looking for isatty
-- Looking for isatty - not found
-- Looking for futimens
-- Looking for futimens - not found
-- Looking for futimes
-- Looking for futimes - not found
-- Looking for mallctl
-- Looking for mallctl - not found
-- Looking for mallinfo
-- Looking for mallinfo - not found
-- Looking for malloc_zone_statistics
-- Looking for malloc_zone_statistics - not found
-- Looking for mkdtemp
-- Looking for mkdtemp - not found
-- Looking for mkstemp
-- Looking for mkstemp - not found
-- Looking for mktemp
-- Looking for mktemp - not found
-- Looking for closedir
-- Looking for closedir - not found
-- Looking for opendir
-- Looking for opendir - not found
-- Looking for readdir
-- Looking for readdir - not found
-- Looking for getcwd
-- Looking for getcwd - not found
-- Looking for gettimeofday
-- Looking for gettimeofday - not found
-- Looking for getrlimit
-- Looking for getrlimit - not found
-- Looking for posix_spawn
-- Looking for posix_spawn - not found
-- Looking for pread
-- Looking for pread - not found
-- Looking for realpath
-- Looking for realpath - not found
-- Looking for sbrk
-- Looking for sbrk - not found
-- Looking for srand48
-- Looking for srand48 - not found
-- Looking for strtoll
-- Looking for strtoll - found
-- Looking for strtoq
-- Looking for strtoq - not found
-- Looking for strerror
-- Looking for strerror - found
-- Looking for strerror_r
-- Looking for strerror_r - not found
-- Looking for strerror_s
-- Looking for strerror_s - found
-- Looking for setenv
-- Looking for setenv - not found
-- Looking for _chsize_s
-- Looking for _chsize_s - found
-- Looking for _alloca
-- Looking for _alloca - not found
-- Looking for __alloca
-- Looking for __alloca - not found
-- Looking for __chkstk
-- Looking for __chkstk - not found
-- Looking for __chkstk_ms
-- Looking for __chkstk_ms - not found
-- Looking for ___chkstk
-- Looking for ___chkstk - not found
-- Looking for ___chkstk_ms
-- Looking for ___chkstk_ms - not found
-- Looking for __ashldi3
-- Looking for __ashldi3 - not found
-- Looking for __ashrdi3
-- Looking for __ashrdi3 - not found
-- Looking for __divdi3
-- Looking for __divdi3 - not found
-- Looking for __fixdfdi
-- Looking for __fixdfdi - not found
-- Looking for __fixsfdi
-- Looking for __fixsfdi - not found
-- Looking for __floatdidf
-- Looking for __floatdidf - not found
-- Looking for __lshrdi3
-- Looking for __lshrdi3 - not found
-- Looking for __moddi3
-- Looking for __moddi3 - not found
-- Looking for __udivdi3
-- Looking for __udivdi3 - not found
-- Looking for __umoddi3
-- Looking for __umoddi3 - not found
-- Looking for __main
-- Looking for __main - not found
-- Looking for __cmpdi2
-- Looking for __cmpdi2 - not found
-- Looking for __GLIBC__
-- Looking for __GLIBC__ - not found
-- Performing Test HAVE_INT64_T
-- Performing Test HAVE_INT64_T - Success
-- Performing Test HAVE_UINT64_T
-- Performing Test HAVE_UINT64_T - Success
-- Performing Test HAVE_U_INT64_T
-- Performing Test HAVE_U_INT64_T - Failed
-- Performing Test LLVM_HAS_ATOMICS
-- Performing Test LLVM_HAS_ATOMICS - Success
-- Performing Test SUPPORTS_NO_VARIADIC_MACROS_FLAG
-- Performing Test SUPPORTS_NO_VARIADIC_MACROS_FLAG - Failed
-- Target triple: i686-pc-win32
-- Native target architecture is X86
-- Performing Test HAVE_ELMCB_PCSTR
-- Performing Test HAVE_ELMCB_PCSTR - Success
-- Threads enabled.
-- Doxygen disabled.
-- Sphinx disabled.
-- Go bindings disabled.
-- Could NOT find OCaml (missing:  OCAMLFIND OCAML_VERSION OCAML_STDLIB_PATH) 
-- OCaml bindings disabled.
-- Using Debug VC++ CRT: MDd
-- Using Release VC++ CRT: MD
-- Using MinSizeRel VC++ CRT: MD
-- Using RelWithDebInfo VC++ CRT: MD
-- Using Debug VC++ CRT: MDd
-- Performing Test SUPPORTS_SIZED_DEALLOC
-- Performing Test SUPPORTS_SIZED_DEALLOC - Failed
-- Found PythonInterp: E:/Python27/python.exe (found version "2.7.10") 
-- Constructing LLVMBuild project information
-- LLVMHello ignored -- Loadable modules not supported on this platform.
-- Targeting AArch64
-- Targeting AMDGPU
-- Targeting ARM
-- Targeting BPF
-- Targeting CppBackend
-- Targeting Hexagon
-- Targeting Mips
-- Targeting MSP430
-- Targeting NVPTX
-- Targeting PowerPC
-- Targeting Sparc
-- Targeting SystemZ
-- Targeting X86
-- Targeting XCore
-- Could NOT find LibXml2 (missing:  LIBXML2_LIBRARIES LIBXML2_INCLUDE_DIR) 
-- Clang version: 3.8.0
-- SampleAnalyzerPlugin ignored -- Loadable modules not supported on this platform.
-- PrintFunctionNames ignored -- Loadable modules not supported on this platform.
-- BugpointPasses ignored -- Loadable modules not supported on this platform.
-- Configuring done
-- Generating done
-- Build files have been written to: D:/Current/llvm_build

这将在与构建捆绑在一起的plist中设置计算机的IP地址，但仅限于调试版本中。 （它在发布版本中从plist文件中删除。）

• 提示此技术，请提示此blog post。
• 您可能需要使用if [ "$CONFIGURATION" == "Debug" ]; then echo -n ${TARGET_BUILD_DIR}/${INFOPLIST_PATH} | xargs -0 /usr/libexec/PlistBuddy -c "Set :CompanyNameDevServerIP `ipconfig getifaddr en0`" else echo -n ${TARGET_BUILD_DIR}/${INFOPLIST_PATH} | xargs -0 /usr/libexec/PlistBuddy -c "Delete :CompanyNameDevServerIP" fi 以外的其他界面（有关详情，请参阅here）。

3）在代码中，检索此plist值以获取计算机的IP地址：

en0

Answer 3

如果你在编译时需要这个，你可以添加一个＆＃34;运行脚本＆＃34;在＆＃34;构建阶段＆＃34;您的Xcode项目的选项卡。将它放入源代码中自然会返回代码运行位置的IP地址，而不是它的构建位置。

此脚本将返回主IP地址。您可以修改脚本以编辑Plist或您需要的任何内容。 PlistBuddy适用于在构建时修改plist文件。

ifconfig | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*' | grep -v '127.0.0.1'