\u6587\u4ef6<\/p>\n
\u804c\u8d23<\/p>\n<\/tr>\n
Mutex.hpp<\/p>\n<\/td>\n
\u5bf9 pthread \u4e92\u65a5\u9501\u7684 C++ \u5c01\u88c5，\u5916\u52a0 RAII \u9501\u5b88\u536b LockGuard<\/p>\n<\/td>\n<\/tr>\n
Log.hpp<\/p>\n<\/td>\n
\u65e5\u5fd7\u6a21\u5757：\u65e5\u5fd7\u7b49\u7ea7\u3001\u65f6\u95f4\u6233\u3001\u6d41\u5f0f\u8f93\u51fa\u3001\u5c4f\u5e55\/\u6587\u4ef6\u4e24\u79cd\u5237\u65b0\u7b56\u7565<\/p>\n<\/td>\n<\/tr>\n
UdpServer.hpp<\/p>\n<\/td>\n
UDP \u670d\u52a1\u5668\u4e3b\u4f53：\u521b\u5efa\u5957\u63a5\u5b57\u3001\u7ed1\u5b9a\u3001\u6536\u53d1\u5faa\u73af\u3001\u8c03\u7528\u56de\u8c03\u5904\u7406\u4e1a\u52a1<\/p>\n<\/td>\n<\/tr>\n
UdpServer.cc<\/p>\n<\/td>\n
\u670d\u52a1\u5668 main：\u89e3\u6790\u547d\u4ee4\u884c\u7aef\u53e3\u53f7\u3001\u6ce8\u5165\u4e1a\u52a1\u56de\u8c03\u51fd\u6570\u3001\u542f\u52a8\u670d\u52a1\u5668<\/p>\n<\/td>\n<\/tr>\n
UdpClient.cc<\/p>\n<\/td>\n
UDP \u5ba2\u6237\u7aef：\u4ece\u952e\u76d8\u8bfb\u6d88\u606f\u53d1\u7ed9\u670d\u52a1\u5668，\u963b\u585e\u7b49\u5f85\u5e76\u6253\u5370\u670d\u52a1\u5668\u7684\u56de\u590d<\/p>\n<\/td>\n<\/tr>\n
Makefile<\/p>\n<\/td>\n
\u4e00\u6761\u547d\u4ee4\u7f16\u8bd1\u4e24\u4e2a\u53ef\u6267\u884c\u7a0b\u5e8f<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u6700\u7ec8\u7a0b\u5e8f\u7684\u7ed3\u679c：<\/p>\n
- \n
- \n
\u670d\u52a1\u5668：.\/udpserver 8080，\u76d1\u542c\u672c\u673a\u6240\u6709\u7f51\u5361\u7684 8080 \u7aef\u53e3，\u6536\u5230\u6d88\u606f\u540e\u4ea4\u7ed9\u4e00\u4e2a\u53ef\u66ff\u6362\u7684\u56de\u8c03\u51fd\u6570\u5904\u7406，\u518d\u628a\u5904\u7406\u7ed3\u679c\u53d1\u56de\u5ba2\u6237\u7aef\u3002<\/p>\n<\/li>\n
- \n
\u5ba2\u6237\u7aef：.\/udpclient 127.0.0.1 8080，\u952e\u76d8\u8f93\u5165\u4e00\u884c\u5c31\u53d1\u4e00\u884c，\u6536\u5230\u56de\u590d\u540e\u6253\u5370\u3002<\/p>\n<\/li>\n
- \n
\u5f53\u5929\u7684\u6d4b\u8bd5\u56de\u8c03\u7ed9\u6bcf\u6761\u6d88\u606f\u52a0\u4e0a hello, \u524d\u7f00，\u4f8b\u5982\u53d1 world \u6536\u5230 hello, world\u3002<\/p>\n<\/li>\n<\/ul>\n
\n2. \u7b2c\u4e00\u90e8\u5206：\u4e92\u65a5\u9501\u6a21\u5757 Mutex.hpp<\/h3>\n
\u8fd9\u662f\u6574\u4e2a\u9879\u76ee\u6700\u5e95\u5c42\u7684\u5de5\u5177，\u65e5\u5fd7\u6a21\u5757\u4f9d\u8d56\u5b83\u4fdd\u8bc1\u591a\u7ebf\u7a0b\u4e0b\u8f93\u51fa\u4e0d\u4ea4\u53c9\u3002\u5b8c\u6574\u4ee3\u7801：<\/p>\n
#pragma once
\n#include <iostream>
\n#include <pthread.h><\/p>\nnamespace MutexModule
\n{
\n class Mutex
\n {
\n public:
\n Mutex()
\n {
\n pthread_mutex_init(&_mutex, nullptr);
\n }
\n void Lock()
\n {
\n int n = pthread_mutex_lock(&_mutex);
\n (void)n;
\n }
\n void Unlock()
\n {
\n int n = pthread_mutex_unlock(&_mutex);
\n (void)n;
\n }
\n ~Mutex()
\n {
\n pthread_mutex_destroy(&_mutex);
\n }
\n private:
\n pthread_mutex_t _mutex;
\n };<\/p>\nclass LockGuard
\n {
\n public:
\n LockGuard(Mutex &mutex) : _mutex(mutex)
\n {
\n _mutex.Lock();
\n }
\n ~LockGuard()
\n {
\n _mutex.Unlock();
\n }
\n private:
\n Mutex &_mutex;
\n };
\n}<\/p>\n2.1 \u4e3a\u4ec0\u4e48\u9700\u8981\u5b83<\/h4>\n
\u8bbe\u60f3\u4e24\u4e2a\u7ebf\u7a0b\u540c\u65f6\u6253\u65e5\u5fd7，\u5982\u679c\u6ca1\u6709\u9501，\u4e24\u6761\u65e5\u5fd7\u7684\u5b57\u7b26\u53ef\u80fd\u4ea4\u9519\u5728\u4e00\u8d77，\u8f93\u51fa\u4e71\u6210\u4e00\u56e2\u3002\u56e0\u6b64\u6bcf\u6761\u65e5\u5fd7\u7684"\u5199\u51fa\u52a8\u4f5c"\u5fc5\u987b\u662f\u4e92\u65a5\u7684：\u540c\u4e00\u65f6\u523b\u53ea\u5141\u8bb8\u4e00\u4e2a\u7ebf\u7a0b\u5199\u3002<\/p>\n
2.2 \u9010\u6bb5\u89e3\u91ca<\/h4>\n
Mutex \u7c7b：\u5bf9 POSIX \u7ebf\u7a0b\u5e93\u56db\u4e2a\u539f\u751f API \u7684\u9762\u5411\u5bf9\u8c61\u5305\u88c5：<\/p>\n
- \n
- \n
\u6784\u9020\u51fd\u6570\u8c03 pthread_mutex_init \u521d\u59cb\u5316\u9501；<\/p>\n<\/li>\n
- \n
Lock() \u8c03 pthread_mutex_lock \u52a0\u9501（\u62ff\u4e0d\u5230\u9501\u5c31\u963b\u585e）；<\/p>\n<\/li>\n
- \n
Unlock() \u8c03 pthread_mutex_unlock \u89e3\u9501；<\/p>\n<\/li>\n
- \n
\u6790\u6784\u51fd\u6570\u8c03 pthread_mutex_destroy \u9500\u6bc1\u9501，\u907f\u514d\u8d44\u6e90\u6cc4\u6f0f\u3002<\/p>\n<\/li>\n<\/ul>\n
(void)n; \u7684\u4f5c\u7528\u662f"\u663e\u5f0f\u5ffd\u7565\u8fd4\u56de\u503c"，\u9632\u6b62\u7f16\u8bd1\u5668\u56e0\u53d8\u91cf\u672a\u4f7f\u7528\u800c\u544a\u8b66\u3002<\/p>\n
\nLockGuard \u7c7b：\u8fd9\u662f\u5178\u578b\u7684 RAII（\u8d44\u6e90\u83b7\u53d6\u5373\u521d\u59cb\u5316） \u624b\u6cd5：<\/p>\n
- \n
- \n
\u521b\u5efa\u5bf9\u8c61\u65f6\u81ea\u52a8\u52a0\u9501；<\/p>\n<\/li>\n
- \n
\u79bb\u5f00\u4f5c\u7528\u57df\u65f6，\u5bf9\u8c61\u6790\u6784\u81ea\u52a8\u89e3\u9501\u3002<\/p>\n<\/li>\n<\/ul>\n
\u8fd9\u6837\u5373\u4f7f\u4e2d\u95f4\u4ee3\u7801\u629b\u5f02\u5e38\u6216\u63d0\u524d return，\u9501\u4e5f\u4e00\u5b9a\u4f1a\u88ab\u91ca\u653e，\u4ece\u6839\u4e0a\u675c\u7edd"\u52a0\u4e86\u9501\u5fd8\u8bb0\u89e3"\u7684\u95ee\u9898\u3002\u4f7f\u7528\u65f6\u53ea\u6709\u4e00\u884c：<\/p>\n
{
\n LockGuard lockguard(_mutex); \/\/ \u8fdb\u5165\u4f5c\u7528\u57df，\u52a0\u9501
\n \/\/ … \u4e34\u754c\u533a\u4ee3\u7801 …
\n} \/\/ \u79bb\u5f00\u4f5c\u7528\u57df，\u81ea\u52a8\u89e3\u9501<\/p>\n\u6ce8\u610f LockGuard \u7684\u6210\u5458\u662f Mutex &_mutex\u2014\u2014\u5f15\u7528\u7c7b\u578b<\/span>，\u5b83\u4e0d\u62e5\u6709\u9501，\u53ea\u662f\u7ed1\u5b9a\u5916\u90e8\u90a3\u628a\u9501，\u6240\u4ee5\u591a\u4e2a\u5b88\u536b\u53ef\u4ee5\u7ba1\u7406\u540c\u4e00\u628a\u9501\u3002<\/p>\n
\n3. \u7b2c\u4e8c\u90e8\u5206：\u65e5\u5fd7\u6a21\u5757 Log.hpp（\u7b56\u7565\u6a21\u5f0f + \u6d41\u5f0f\u8f93\u51fa）<\/h3>\n
\u8fd9\u662f\u6700\u6838\u5fc3\u3001\u8e29\u5751\u6700\u591a\u7684\u6587\u4ef6\u3002\u5b83\u8981\u5b9e\u73b0\u4e24\u4e2a\u80fd\u529b：<\/p>\n
- \n
\u4e00\u6761\u65e5\u5fd7\u5305\u542b\u65f6\u95f4\u3001\u7b49\u7ea7\u3001\u8fdb\u7a0b PID\u3001\u6e90\u6587\u4ef6\u540d\u3001\u884c\u53f7\u548c\u6b63\u6587；<\/p>\n<\/li>\n
- \n
\u65e5\u5fd7\u53ef\u4ee5\u9009\u62e9\u6253\u5370\u5230\u5c4f\u5e55，\u4e5f\u53ef\u4ee5\u5199\u5165\u6587\u4ef6，\u672a\u6765\u8fd8\u80fd\u6269\u5c55\u5176\u4ed6\u65b9\u5f0f\u3002<\/p>\n<\/li>\n
3.1 \u7b56\u7565\u6a21\u5f0f：\u62bd\u8c61\u57fa\u7c7b\u4e0e\u4e24\u4e2a\u5177\u4f53\u7b56\u7565<\/h4>\n
namespace LogModule
\n{
\n const std::string gsep = "\\\\r\\\\n";<\/p>\nclass LogStrategy
\n {
\n public:
\n ~LogStrategy() = default;
\n virtual void SyncLog(const std::string &message) = 0;
\n };<\/p>\nLogStrategy \u662f\u62bd\u8c61\u7b56\u7565：\u4e00\u4e2a\u7eaf\u865a\u51fd\u6570 SyncLog，\u542b\u4e49\u662f"\u628a\u4e00\u6761\u5b8c\u6574\u65e5\u5fd7\u540c\u6b65\u5237\u51fa\u53bb"\u3002\u57fa\u7c7b\u865a\u6790\u6784\u51fd\u6570\u7528 = default，\u4fdd\u8bc1\u901a\u8fc7\u57fa\u7c7b\u6307\u9488\u9500\u6bc1\u5b50\u7c7b\u5bf9\u8c61\u65f6\u80fd\u6b63\u786e\u8c03\u7528\u5b50\u7c7b\u6790\u6784\u3002<\/p>\n
\n\u5177\u4f53\u7b56\u7565\u4e00：\u6253\u5370\u5230\u5c4f\u5e55<\/p>\n
class ConsoleLogStrategy : public LogStrategy
\n {
\n public:
\n ConsoleLogStrategy()
\n {
\n }
\n void SyncLog(const std::string &message) override
\n {
\n LockGuard lockguard(_mutex);
\n std::cout << message << std::endl; \/\/ \u771f\u6b63\u8f93\u51fa\u5230\u663e\u793a\u5668
\n }
\n ~ConsoleLogStrategy()
\n {
\n }<\/p>\nprivate:
\n Mutex _mutex;
\n };<\/p>\n
\n\u5177\u4f53\u7b56\u7565\u4e8c：\u5199\u5165\u6587\u4ef6<\/p>\n
const std::string defaultpath = ".\/log";
\n const std::string defaultfile = "my.log";
\n class FileLogStrategy : public LogStrategy
\n {
\n public:
\n FileLogStrategy(const std::string &path = defaultpath, const std::string &file = defaultfile)
\n : _path(path),
\n _file(file)
\n {
\n LockGuard lockguard(_mutex);
\n if (std::filesystem::exists(_path))
\n {
\n return;
\n }
\n try
\n {
\n std::filesystem::create_directories(_path);
\n }
\n catch (const std::filesystem::filesystem_error &e)
\n {
\n std::cerr << e.what() << '\\\\n';
\n }
\n }
\n void SyncLog(const std::string &message) override
\n {
\n LockGuard lockguard(_mutex);<\/p>\nstd::string filename = _path + (_path.back() == '\/' ? "" : "\/") + _file;
\n std::ofstream out(filename, std::ios::app);
\n if (!out.is_open())
\n {
\n return;
\n }
\n out << message << gsep;
\n out.close();
\n }
\n ~FileLogStrategy()
\n {
\n }<\/p>\nprivate:
\n std::string _path;
\n std::string _file;
\n Mutex _mutex;
\n };<\/p>\n\u8fd9\u91cc\u4e3b\u8981\u662f\u8bb0\u4f4f\u4ee5\u4e0b\u51e0\u70b9：<\/p>\n
- \n
- \n
\u9ed8\u8ba4\u65e5\u5fd7\u8def\u5f84 .\/log\u3001\u6587\u4ef6\u540d my.log，\u90fd\u53ef\u4ee5\u901a\u8fc7\u6784\u9020\u53c2\u6570\u8986\u76d6；<\/p>\n<\/li>\n
- \n
\u6784\u9020\u65f6\u7528 C++17 \u7684 std::filesystem \u5224\u65ad\u76ee\u5f55\u662f\u5426\u5b58\u5728，\u4e0d\u5b58\u5728\u5c31 create_directories \u9012\u5f52\u521b\u5efa，\u5e76\u7528 try\/catch \u6355\u83b7\u6587\u4ef6\u7cfb\u7edf\u5f02\u5e38（\u6bd4\u5982\u6743\u9650\u4e0d\u8db3）；<\/p>\n<\/li>\n
- \n
\u5199\u6587\u4ef6\u7528 std::ios::app \u8ffd\u52a0\u6a21\u5f0f，\u6bcf\u6b21\u8fd0\u884c\u4e0d\u4f1a\u8986\u76d6\u65e7\u65e5\u5fd7；<\/p>\n<\/li>\n
- \n
\u62fc\u6587\u4ef6\u540d\u65f6\u7528\u4e09\u5143\u8868\u8fbe\u5f0f\u5904\u7406\u8def\u5f84\u672b\u5c3e\u6709\u6ca1\u6709 \/，\u6700\u7ec8\u62fc\u6210 .\/log\/my.log；<\/p>\n<\/li>\n
- \n
\u6587\u4ef6\u91cc\u6362\u884c\u4e0d\u7528 std::endl，\u800c\u7528\u5168\u5c40\u5e38\u91cf gsep = "\\\\r\\\\n"（CRLF）\u3002<\/p>\n<\/li>\n<\/ul>\n
\n3.2 \u65e5\u5fd7\u7b49\u7ea7\u4e0e\u65f6\u95f4\u6233<\/h4>\n
enum class LogLevel
\n {
\n DEBUG,
\n INFO,
\n WARNING,
\n ERROR,
\n FATAL
\n };<\/p>\nenum class \u662f C++11 \u7684\u5f3a\u7c7b\u578b\u679a\u4e3e，\u4e0d\u4f1a\u548c\u6574\u6570\u9690\u5f0f\u8f6c\u6362，\u4f7f\u7528\u65f6\u5fc5\u987b\u5199 LogLevel::INFO\u3002<\/p>\n
\nstd::string Level2Str(LogLevel level)
\n {
\n switch (level)
\n {
\n case LogLevel::DEBUG: return "DEBUG";
\n case LogLevel::INFO: return "INFO";
\n case LogLevel::WARNING: return "WARNING";
\n case LogLevel::ERROR: return "ERROR";
\n case LogLevel::FATAL: return "FATAL";
\n default: return "UNKNOWN";
\n }
\n }<\/p>\n\u679a\u4e3e\u503c\u65e0\u6cd5\u76f4\u63a5\u8f93\u51fa，\u7528 switch \u8f6c\u6210\u5b57\u7b26\u4e32\u3002<\/p>\n
\nstd::string GetTimeStamp()
\n {
\n time_t curr = time(nullptr);
\n struct tm curr_tm;
\n localtime_r(&curr, &curr_tm);
\n char timebuffer[128];
\n snprintf(timebuffer, sizeof(timebuffer),"%4d-%02d-%02d %02d:%02d:%02d",
\n curr_tm.tm_year+1900,
\n curr_tm.tm_mon+1,
\n curr_tm.tm_mday,
\n curr_tm.tm_hour,
\n curr_tm.tm_min,
\n curr_tm.tm_sec
\n );
\n return timebuffer;
\n }<\/p>\n\u4e3b\u8981\u8bb0\u4f4f：<\/p>\n
- \n
- \n
time(nullptr) \u62ff\u5230\u4ece 1970 \u5e74\u81f3\u4eca\u7684\u79d2\u6570；<\/p>\n<\/li>\n
- \n
localtime_r \u662f localtime \u7684\u7ebf\u7a0b\u5b89\u5168\u7248\u672c（\u5e26 _r \u540e\u7f00，\u7ed3\u679c\u5199\u5165\u8c03\u7528\u8005\u63d0\u4f9b\u7684 curr_tm），\u591a\u7ebf\u7a0b\u7a0b\u5e8f\u5fc5\u987b\u7528\u8fd9\u4e2a；<\/p>\n<\/li>\n
- \n
tm_year \u5b58\u7684\u662f"\u8ddd 1900 \u5e74\u7684\u5e74\u6570"，\u6240\u4ee5\u8981 +1900；tm_mon \u4ece 0 \u5f00\u59cb，\u6240\u4ee5\u8981 +1；<\/p>\n<\/li>\n
- \n
%02d \u8868\u793a\u81f3\u5c11\u4e24\u4f4d\u3001\u4e0d\u8db3\u8865\u96f6，\u5f97\u5230 2026-09-13 12:56:46 \u8fd9\u6837\u7684\u5b9a\u957f\u65f6\u95f4\u4e32\u3002<\/p>\n<\/li>\n<\/ul>\n
\n3.3 Logger \u7c7b\u4e0e\u6d41\u5f0f\u65e5\u5fd7\u7684\u6838\u5fc3\u6280\u5de7<\/h4>\n
class Logger
\n {
\n public:
\n Logger()
\n {
\n EnableConsoleLogStrategy();
\n }
\n void EnableFileLogStrategy()
\n {
\n _fflush_strategy = std::make_unique<FileLogStrategy>();
\n }
\n void EnableConsoleLogStrategy()
\n {
\n _fflush_strategy = std::make_unique<ConsoleLogStrategy>();
\n }<\/p>\nLogger \u6301\u6709\u4e00\u4e2a std::unique_ptr<LogStrategy>，\u8fd9\u5c31\u662f\u7b56\u7565\u6a21\u5f0f\u7684"\u6301\u6709\u4e00\u4e2a\u53ef\u66ff\u6362\u7684\u7b56\u7565"\u3002\u60f3\u628a\u65e5\u5fd7\u4ece\u5c4f\u5e55\u5207\u5230\u6587\u4ef6，\u53ea\u9700\u8ba9\u6307\u9488\u6307\u5411\u53e6\u4e00\u4e2a\u5177\u4f53\u7b56\u7565\u5bf9\u8c61\u3002\u6784\u9020\u65f6\u9ed8\u8ba4\u4f7f\u7528\u5c4f\u5e55\u7b56\u7565\u3002<\/p>\n
\n\u5185\u90e8\u7c7b LogMessage：\u4e00\u6761"\u5c1a\u672a\u5199\u5b8c"\u7684\u65e5\u5fd7<\/p>\n
class LogMessage
\n {
\n public:
\n LogMessage(LogLevel &level, std::string &src_name, int line_number, Logger &logger)
\n : _curr_time(GetTimeStamp()),
\n _level(level),
\n _pid(getpid()),
\n _src_name(src_name),
\n _line_number(line_number),
\n _logger(logger)
\n {
\n std::stringstream ss;
\n ss << "[" << _curr_time << "] "
\n << "[" << Level2Str(_level) << "] "
\n << "[" << _pid << "] "
\n << "[" << _src_name << "] "
\n << "[" << _line_number << "] "
\n << "- ";
\n _loginfo = ss.str();
\n }<\/p>\n
\n\u6784\u9020\u51fd\u6570\u8d1f\u8d23\u62fc\u65e5\u5fd7\u7684\u5de6\u534a\u90e8\u5206（\u56fa\u5b9a\u524d\u7f00）：<\/p>\n
[2026-09-13 12:56:46] [INFO] [771141] [UdpServer.hpp] [40] –<\/p>\n
\u4f9d\u6b21\u662f\u65f6\u95f4\u3001\u7b49\u7ea7\u3001\u8fdb\u7a0b PID（getpid()）\u3001\u6e90\u6587\u4ef6\u540d\u3001\u884c\u53f7\u3002<\/p>\n
template <typename T>
\n LogMessage &operator<<(const T &info)
\n {
\n std::stringstream ss;
\n ss << info;
\n _loginfo += ss.str();
\n return *this;
\n }<\/p>\n
\n\u6a21\u677f\u7248 operator<< \u8d1f\u8d23\u65e5\u5fd7\u7684\u53f3\u534a\u90e8\u5206（\u53ef\u53d8\u6b63\u6587）：\u65e0\u8bba\u4f20\u5165\u5b57\u7b26\u4e32\u3001\u6574\u6570\u3001\u6587\u4ef6\u63cf\u8ff0\u7b26，\u90fd\u5148\u7528 stringstream \u8f6c\u6210\u5b57\u7b26\u4e32\u518d\u8ffd\u52a0\u3002\u8fd4\u56de\u81ea\u8eab\u5f15\u7528，\u6240\u4ee5\u53ef\u4ee5\u94fe\u5f0f\u8c03\u7528 << a << b << c\u3002<\/p>\n
\/\/ \u4e13\u95e8\u63a5\u6536 std::endl \/ std::flush \u7b49\u6d41\u64cd\u7eb5\u7b26(\u51fd\u6570\u6a21\u677f\u65e0\u6cd5\u88ab\u4e0a\u9762\u7684\u6a21\u677f operator<< \u63a8\u5bfc)
\n \/\/ \u6362\u884c\u7531 SyncLog \u7edf\u4e00\u8ffd\u52a0, \u8fd9\u91cc\u76f4\u63a5\u5ffd\u7565\u5373\u53ef
\n LogMessage &operator<<(std::ostream &(*manip)(std::ostream &))
\n {
\n (void)manip;
\n return *this;
\n }<\/p>\nstd::endl \u4e0d\u662f\u6570\u636e\u800c\u662f\u51fd\u6570，\u6a21\u677f operator<< \u63a8\u5bfc\u4e0d\u51fa\u5b83\u7684\u7c7b\u578b，\u5fc5\u987b\u7528\u4e00\u4e2a"\u51fd\u6570\u6307\u9488\u53c2\u6570"\u7684\u975e\u6a21\u677f\u91cd\u8f7d\u4e13\u95e8\u63a5\u4f4f\u5b83\u3002\u6362\u884c\u7531\u6700\u7ec8\u7684 SyncLog \u7edf\u4e00\u52a0\u3002<\/p>\n
\n~LogMessage()
\n {
\n if (_logger._fflush_strategy)
\n {
\n _logger._fflush_strategy->SyncLog(_loginfo);
\n }
\n }<\/p>\nprivate:
\n std::string _curr_time;
\n LogLevel _level;
\n pid_t _pid;
\n std::string _src_name;
\n int _line_number;
\n std::string _loginfo;
\n Logger &_logger;
\n };<\/p>\n\u6790\u6784\u51fd\u6570\u662f\u6574\u4e2a\u6d41\u5f0f\u65e5\u5fd7\u7684"\u6273\u673a"：\u4e00\u6761\u65e5\u5fd7\u8bed\u53e5\u5199\u5b8c\u3001\u4e34\u65f6\u5bf9\u8c61\u6790\u6784\u7684\u77ac\u95f4，\u624d\u628a\u62fc\u597d\u7684\u5b8c\u6574\u5b57\u7b26\u4e32\u771f\u6b63\u4ea4\u7ed9\u7b56\u7565\u8f93\u51fa\u3002\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u4e1a\u52a1\u4ee3\u7801\u91cc\u4e0d\u9700\u8981\u624b\u52a8\u8c03\u7528"\u6253\u5370"\u3002<\/p>\n
\n\u5916\u5c42\u5165\u53e3\u4e0e\u5b8f：<\/p>\n
\/\/ \u8fd9\u91cc\u6545\u610f\u5199\u6210\u8fd4\u56de\u4e34\u65f6\u5bf9\u8c61
\n LogMessage operator()(LogLevel level, std::string name, int line)
\n {
\n return LogMessage(level, name, line, *this);
\n }<\/p>\nprivate:
\n std::unique_ptr<LogStrategy> _fflush_strategy;
\n };<\/p>\nLogger logger; \/\/ \u5168\u5c40\u65e5\u5fd7\u5bf9\u8c61<\/p>\n
#define LOG(level) logger(level, __FILE__, __LINE__)
\n #define Enable_Console_Log_Strategy() logger.EnableConsoleLogStrategy()
\n #define Enable_File_Log_Strategy() logger.EnableFileLogStrategy()
\n}<\/p>\n\u4ee5\u4ee3\u7801\u91cc\u7684\u8fd9\u53e5\u4e3a\u4f8b，\u8d70\u4e00\u904d\u5b8c\u6574\u751f\u547d\u5468\u671f：<\/p>\n
LOG(LogLevel::INFO) << "bind success, sockfd : " << _sockfd;<\/p>\n
- \n
LOG(LogLevel::INFO) \u5b8f\u5c55\u5f00\u4e3a logger(INFO, __FILE__, __LINE__)；<\/p>\n<\/li>\n
- \n
logger.operator()(…) \u8fd4\u56de\u4e00\u4e2a\u4e34\u65f6 LogMessage \u5bf9\u8c61，\u6784\u9020\u65f6\u62fc\u597d\u524d\u7f00；<\/p>\n<\/li>\n
- \n
\u4e24\u4e2a << \u628a\u6b63\u6587\u8ffd\u52a0\u8fdb _loginfo；<\/p>\n<\/li>\n
- \n
\u6574\u6761\u8bed\u53e5\u7ed3\u675f，\u4e34\u65f6\u5bf9\u8c61\u6790\u6784，\u8c03\u7528\u5f53\u524d\u7b56\u7565\u7684 SyncLog \u8f93\u51fa\u3002<\/p>\n<\/li>\n
__FILE__ \u548c __LINE__ \u662f\u7f16\u8bd1\u5668\u5185\u7f6e\u5b8f，\u81ea\u52a8\u5c55\u5f00\u6210\u5f53\u524d\u6587\u4ef6\u540d\u548c\u884c\u53f7，\u6240\u4ee5\u6bcf\u6761\u65e5\u5fd7\u80fd\u7cbe\u786e\u5b9a\u4f4d\u5230\u4ee3\u7801\u884c\u3002<\/p>\n
\n4. \u7b2c\u4e09\u90e8\u5206：UDP \u670d\u52a1\u5668 UdpServer.hpp（\u56de\u8c03\u7248）<\/h3>\n
4.1 \u5934\u6587\u4ef6\u4e0e\u7c7b\u578b\u522b\u540d<\/h4>\n
#pragma once<\/p>\n
#include <iostream>
\n#include <string>
\n#include <functional>
\n#include <strings.h>
\n#include <sys\/types.h>
\n#include <sys\/socket.h>
\n#include <netinet\/in.h>
\n#include <arpa\/inet.h>
\n#include "Log.hpp"<\/p>\nusing namespace LogModule;<\/p>\n
using func_t = std::function<std::string(const std::string&)>;<\/p>\n
const int defaultfd = -1;<\/p>\n
- \n
- \n
<functional>：\u4e3a\u4e86\u7528 std::function；<\/p>\n<\/li>\n
- \n
<strings.h>：\u63d0\u4f9b bzero；<\/p>\n<\/li>\n
- \n
<sys\/socket.h>\u3001<netinet\/in.h>\u3001<arpa\/inet.h>：socket API\u3001\u5730\u5740\u7ed3\u6784\u4f53\u3001\u5b57\u8282\u5e8f\/IP \u8f6c\u6362\u51fd\u6570；<\/p>\n<\/li>\n
- \n
func_t \u662f\u56de\u8c03\u7c7b\u578b：\u5403\u4e00\u4e2a\u5b57\u7b26\u4e32（\u5ba2\u6237\u7aef\u6d88\u606f），\u5410\u4e00\u4e2a\u5b57\u7b26\u4e32（\u5904\u7406\u7ed3\u679c）\u3002\u4efb\u4f55\u7b7e\u540d\u5339\u914d\u7684\u666e\u901a\u51fd\u6570\u3001lambda\u3001\u4eff\u51fd\u6570\u90fd\u80fd\u4f20\u8fdb\u6765；<\/p>\n<\/li>\n
- \n
defaultfd = -1：\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u975e\u6cd5\u503c，\u6784\u9020\u65f6\u5148\u628a _sockfd \u7f6e\u4e3a -1\u3002<\/p>\n<\/li>\n<\/ul>\n
\n4.2 \u6784\u9020\u51fd\u6570<\/h4>\n
class UdpServer
\n{
\npublic:
\n UdpServer(uint16_t port, func_t func)
\n : _sockfd(defaultfd),
\n \/\/ _ip(ip),
\n _port(port),
\n _isrunning(false),
\n _func(func)
\n {
\n }<\/p>\n\u53ea\u63a5\u6536\u4e24\u4e2a\u53c2\u6570：\u7aef\u53e3\u53f7\u548c\u4e1a\u52a1\u56de\u8c03\u3002\u6ce8\u610f\u88ab\u6ce8\u91ca\u6389\u7684 _ip(ip)\u2014\u2014\u8fd9\u662f\u5f53\u5929\u6211\u8fed\u4ee3\u7684\u75d5\u8ff9：\u65e9\u671f\u7248\u672c\u6784\u9020\u51fd\u6570\u662f UdpServer(const std::string &ip, uint16_t port)，\u540e\u6765\u6539\u7528 INADDR_ANY \u540e\u4e0d\u518d\u9700\u8981\u6307\u5b9a IP\u3002<\/p>\n
\n\u6210\u5458\u53d8\u91cf：<\/p>\n
private:
\n int _sockfd;
\n uint16_t _port;
\n \/\/ std::string _ip;
\n bool _isrunning;<\/p>\nfunc_t _func; \/\/ \u670d\u52a1\u5668\u7684\u56de\u8c03\u51fd\u6570，\u7528\u6765\u8fdb\u884c\u5bf9\u6570\u636e\u8fdb\u884c\u5904\u7406<\/p>\n
\n4.3 Init()：\u521b\u5efa\u5957\u63a5\u5b57 + \u7ed1\u5b9a<\/h4>\n
void Init()
\n {
\n \/\/ 1. \u521b\u5efa\u5957\u63a5\u5b57
\n _sockfd = socket(AF_INET, SOCK_DGRAM, 0);
\n if (_sockfd < 0)
\n {
\n LOG(LogLevel::FATAL) << "socket error!";
\n exit(1);
\n }
\n LOG(LogLevel::INFO) << "socket success, sockfd : " << _sockfd;<\/p>\nsocket(AF_INET, SOCK_DGRAM, 0) \u4e09\u4e2a\u53c2\u6570：<\/p>\n
- \n
- \n
AF_INET：IPv4；<\/p>\n<\/li>\n
- \n
SOCK_DGRAM：\u6570\u636e\u62a5\u5957\u63a5\u5b57，\u5373 UDP（TCP \u5bf9\u5e94 SOCK_STREAM）；<\/p>\n<\/li>\n
- \n
\u7b2c\u4e09\u4e2a\u53c2\u6570 0：\u8ba9\u5185\u6838\u6309\u524d\u4e24\u4e2a\u53c2\u6570\u81ea\u52a8\u9009\u9ed8\u8ba4\u534f\u8bae\u3002<\/p>\n<\/li>\n<\/ul>\n
\u6210\u529f\u8fd4\u56de\u975e\u8d1f\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26（\u5b9e\u6d4b\u4ece 3 \u5f00\u59cb，\u56e0\u4e3a 0\/1\/2 \u5df2\u88ab\u6807\u51c6\u8f93\u5165\u8f93\u51fa\u9519\u8bef\u5360\u7528），\u5931\u8d25\u8fd4\u56de -1\u3002\u5931\u8d25\u5c5e\u81f4\u547d\u9519\u8bef，\u6253 FATAL \u65e5\u5fd7\u540e exit(1)\u3002<\/p>\n
\n\/\/ 2. \u7ed1\u5b9asocket\u4fe1\u606f，ip\u548c\u7aef\u53e3
\n struct sockaddr_in local;
\n bzero(&local, sizeof(local));
\n local.sin_family = AF_INET;
\n local.sin_port = htons(_port);
\n \/\/local.sin_addr.s_addr = inet_addr(_ip.c_str()); \/\/ TODO
\n local.sin_addr.s_addr = INADDR_ANY;<\/p>\nint n = bind(_sockfd, (struct sockaddr *)&local, sizeof(local));
\n if (n < 0)
\n {
\n LOG(LogLevel::FATAL) << "bind error";
\n exit(2);
\n }
\n LOG(LogLevel::INFO) << "bind success, sockfd : " << _sockfd;
\n }<\/p>\n\u5730\u5740\u7ed3\u6784\u4f53 sockaddr_in \u7684\u586b\u5145\u662f\u7f51\u7edc\u7f16\u7a0b\u7684\u57fa\u672c\u529f：<\/p>\n
\n\n
\n \u5b57\u6bb5<\/p>\n
\u586b\u4ec0\u4e48<\/p>\n
\u4e3a\u4ec0\u4e48<\/p>\n<\/tr>\n
\n \n sin_family<\/p>\n<\/td>\n
\n AF_INET<\/p>\n<\/td>\n
\n \u5730\u5740\u65cf，\u548c socket() \u4fdd\u6301\u4e00\u81f4<\/p>\n<\/td>\n<\/tr>\n
\n \n sin_port<\/p>\n<\/td>\n
\n htons(_port)<\/p>\n<\/td>\n
\n \u7aef\u53e3\u5fc5\u987b\u8f6c\u6210\u7f51\u7edc\u5b57\u8282\u5e8f（\u5927\u7aef）<\/p>\n<\/td>\n<\/tr>\n
\n \n sin_addr.s_addr<\/p>\n<\/td>\n
\n INADDR_ANY<\/p>\n<\/td>\n
\n \u76d1\u542c\u672c\u673a\u6240\u6709\u7f51\u5361<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
- \n
- \n
bzero \u5148\u628a\u6574\u4e2a\u7ed3\u6784\u4f53\u6e05\u96f6，\u907f\u514d\u672a\u8d4b\u503c\u5b57\u6bb5\u5e26\u7740\u5783\u573e\u503c；<\/p>\n<\/li>\n
- \n
htons = host to network short，\u628a\u7aef\u53e3\u4ece\u4e3b\u673a\u5b57\u8282\u5e8f\u8f6c\u7f51\u7edc\u5b57\u8282\u5e8f；<\/p>\n<\/li>\n
- \n
INADDR_ANY \u7684\u503c\u5c31\u662f 0（\u5373 0.0.0.0），htonl(0) \u4ecd\u662f 0，\u6240\u4ee5\u8fd9\u91cc\u4e0d\u7528\u518d\u5305\u4e00\u5c42\u8f6c\u6362；<\/p>\n<\/li>\n
- \n
bind \u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u7c7b\u578b\u662f\u901a\u7528\u7684 struct sockaddr*，\u5fc5\u987b\u5f3a\u8f6c；\u5931\u8d25\u65f6（\u6700\u5e38\u89c1\u662f\u7aef\u53e3\u88ab\u5360\u7528）exit(2)\u3002<\/p>\n<\/li>\n<\/ul>\n
\u4e3a\u4ec0\u4e48\u670d\u52a1\u5668\u5fc5\u987b\u663e\u5f0f bind，\u800c\u5ba2\u6237\u7aef\u4e0d\u7528？<\/span><\/p>\n
\u56e0\u4e3a\u670d\u52a1\u5668\u7684 IP + \u7aef\u53e3\u5fc5\u987b\u662f\u4f17\u6240\u5468\u77e5\u3001\u56fa\u5b9a\u4e0d\u53d8\u7684，\u5ba2\u6237\u7aef\u624d\u80fd\u627e\u5230\u5b83；\u5ba2\u6237\u7aef\u7aef\u53e3\u7531\u64cd\u4f5c\u7cfb\u7edf\u9996\u6b21\u53d1\u9001\u65f6\u968f\u673a\u5206\u914d\u5373\u53ef\u3002<\/p>\n
\n4.4 Start()：\u6536\u53d1\u5faa\u73af<\/h4>\n
void Start()
\n {
\n _isrunning = true;
\n while (_isrunning)
\n {
\n char buffer[1024];
\n struct sockaddr_in peer;
\n socklen_t len = sizeof(peer);
\n \/\/ 1. \u6536\u6d88\u606f
\n ssize_t s = recvfrom(_sockfd, buffer, sizeof(buffer) – 1, 0, (struct sockaddr *)&peer, &len);
\n if (s > 0)
\n {
\n int peer_port = ntohs(peer.sin_port);
\n std::string peer_ip = inet_ntoa(peer.sin_addr);<\/p>\nbuffer[s] = 0;<\/p>\n
std::string result = _func(buffer);<\/p>\n
\/\/ LOG(LogLevel::DEBUG) << "[" << peer_ip << ":" << peer_port<< "]# " << buffer;<\/p>\n
\/\/ 2. \u53d1\u6d88\u606f
\n sendto(_sockfd, result.c_str(), result.size(), 0, (struct sockaddr*)&peer, len);
\n }
\n }
\n }<\/p>\n\u9010\u6b65\u89e3\u91ca：<\/p>\n
- \n
recvfrom：UDP \u6536\u6570\u636e\u7684\u6838\u5fc3\u8c03\u7528\u3002\u5b83\u4e0d\u4ec5\u628a\u6570\u636e\u653e\u8fdb buffer，\u8fd8\u4f1a\u628a\u53d1\u9001\u65b9\u7684\u5b8c\u6574\u5730\u5740\u5199\u8fdb peer，\u628a\u5730\u5740\u957f\u5ea6\u5199\u8fdb len\u3002\u8fd4\u56de\u503c\u662f\u6536\u5230\u7684\u5b57\u8282\u6570\u3002<\/p>\n<\/li>\n
- \n
\u6536\u5305\u957f\u5ea6\u4e0a\u9650\u4f20 sizeof(buffer) – 1（1023），\u6545\u610f\u7559\u4e00\u4e2a\u5b57\u8282\u3002<\/p>\n<\/li>\n
- \n
if (s > 0)：\u53ea\u6709\u786e\u5b9e\u6536\u5230\u6570\u636e\u624d\u5904\u7406\u3002<\/p>\n<\/li>\n
- \n
\u8bc6\u522b\u53d1\u9001\u65b9：peer.sin_port \u662f\u7f51\u7edc\u5b57\u8282\u5e8f，\u7528 ntohs（network to host short）\u8f6c\u56de\u4e3b\u673a\u5b57\u8282\u5e8f；peer.sin_addr \u662f 4 \u5b57\u8282\u7f51\u7edc\u5e8f IP，\u7528 inet_ntoa \u8f6c\u6210 "127.0.0.1" \u8fd9\u6837\u7684\u70b9\u5206\u5341\u8fdb\u5236\u5b57\u7b26\u4e32\u3002<\/p>\n<\/li>\n
- \n
buffer[s] = 0：UDP \u5305\u4e0d\u662f C \u5b57\u7b26\u4e32，\u4e0d\u4f1a\u81ea\u52a8\u5e26 '\\\\0'\u3002\u624b\u52a8\u5728\u6709\u6548\u6570\u636e\u672b\u5c3e\u8865\u96f6，\u624d\u80fd\u5b89\u5168\u5730\u5f53\u5b57\u7b26\u4e32\u4f7f\u7528，\u5426\u5219\u4f1a\u8bfb\u51fa\u7f13\u51b2\u533a\u540e\u9762\u7684\u810f\u6570\u636e\u3002<\/p>\n<\/li>\n
- \n
std::string result = _func(buffer);：\u628a\u6d88\u606f\u4ea4\u7ed9\u6ce8\u5165\u8fdb\u6765\u7684\u56de\u8c03\u51fd\u6570\u5904\u7406\u3002\u670d\u52a1\u5668\u672c\u8eab\u5b8c\u5168\u4e0d\u5173\u5fc3\u4e1a\u52a1<\/p>\n<\/li>\n
- \n
sendto：\u628a\u56de\u8c03\u8fd4\u56de\u7684\u7ed3\u679c\u53d1\u56de peer\u3002\u56e0\u4e3a\u56de\u590d\u5730\u5740\u76f4\u63a5\u7528 recvfrom \u5e26\u56de\u7684 peer，\u670d\u52a1\u5668\u4e0d\u9700\u8981\u7ef4\u62a4\u4efb\u4f55\u5ba2\u6237\u7aef\u5217\u8868，\u5929\u7136\u652f\u6301\u591a\u4e2a\u5ba2\u6237\u7aef\u3002<\/p>\n<\/li>\n
UDP \u670d\u52a1\u5668\u6ca1\u6709 TCP \u7684 listen\u3001accept，\u6574\u4e2a\u751f\u547d\u5468\u671f\u5c31\u662f\u8fd9\u56db\u4e2a\u7cfb\u7edf\u8c03\u7528：socket –>\u00a0bind –>\u00a0recvfrom –>\u00a0sendto\u3002<\/p>\n
\n4.5 \u6790\u6784\u51fd\u6570<\/h4>\n
~UdpServer()
\n {
\n }<\/p>\n\u5f53\u524d\u4e3a\u7a7a\u3002\u6587\u4ef6\u63cf\u8ff0\u7b26\u5728\u8fdb\u7a0b\u9000\u51fa\u65f6\u7531\u64cd\u4f5c\u7cfb\u7edf\u56de\u6536；\u5982\u679c\u4ee5\u540e\u8981\u505a\u4f18\u96c5\u9000\u51fa，\u53ef\u4ee5\u5728\u8fd9\u91cc close(_sockfd)\u3002<\/p>\n
\n5. \u7b2c\u56db\u90e8\u5206：\u670d\u52a1\u5668\u5165\u53e3 UdpServer.cc<\/h3>\n
#include <iostream>
\n#include <memory>
\n#include "UdpServer.hpp"<\/p>\n\/\/ \u4ec5\u4ec5\u662f\u7528\u6765\u8fdb\u884c\u6d4b\u8bd5\u7684
\nstd::string defaulthandler(const std::string &message)
\n{
\n std::string hello = "hello, ";
\n hello += message;
\n return hello;
\n}<\/p>\n\/\/ .\/udpserver port
\nint main(int argc, char *argv[])
\n{
\n if(argc != 2)
\n {
\n std::cerr << "Usage: " << argv[0] << " port" << std::endl;
\n return 1;
\n }
\n uint16_t port = std::stoi(argv[1]);<\/p>\nEnable_Console_Log_Strategy();<\/p>\n
std::unique_ptr<UdpServer> usvr = std::make_unique<UdpServer>(port, defaulthandler);
\n usvr->Init();
\n usvr->Start();
\n return 0;
\n}<\/p>\n\u4e3b\u8981\u8bb0\u4f4f：<\/p>\n
- \n
- \n
defaulthandler \u5c31\u662f\u4e00\u4e2a\u7b26\u5408 func_t \u7b7e\u540d\u7684\u666e\u901a\u51fd\u6570：\u6536\u5230\u4ec0\u4e48\u90fd\u5728\u524d\u9762\u62fc hello, \u3002\u8fd9\u4e2a\u8bc1\u660e\u4e86\u56de\u8c03\u673a\u5236\u2014\u2014\u60f3\u6362\u6210"\u7ffb\u8bd1""\u5927\u5c0f\u5199\u8f6c\u6362""\u8ba1\u7b97\u5668"，\u53ea\u9700\u53e6\u5199\u4e00\u4e2a\u51fd\u6570\u4f20\u5165，UdpServer \u4e00\u884c\u90fd\u4e0d\u7528\u6539\u3002<\/p>\n<\/li>\n
- \n
\u547d\u4ee4\u884c\u53c2\u6570\u7ea6\u5b9a\u4e3a\u4e00\u4e2a\u7aef\u53e3\u53f7：argc != 2（\u7a0b\u5e8f\u540d\u672c\u8eab\u7b97 argv[0]）\u65f6\u6253\u5370\u7528\u6cd5\u5e76\u9000\u51fa\u3002<\/p>\n<\/li>\n
- \n
std::stoi \u628a\u5b57\u7b26\u4e32\u8f6c\u6210\u6574\u6570，\u518d\u9690\u5f0f\u6536\u7a84\u4e3a uint16_t\u3002<\/p>\n<\/li>\n
- \n
Enable_Console_Log_Strategy() \u662f\u5b8f，\u5c55\u5f00\u4e3a\u5bf9\u5168\u5c40 logger \u7684\u8c03\u7528，\u628a\u65e5\u5fd7\u8f93\u51fa\u5207\u5230\u5c4f\u5e55（\u5176\u5b9e\u6784\u9020\u65f6\u9ed8\u8ba4\u5c31\u662f\u5c4f\u5e55\u7b56\u7565，\u8fd9\u91cc\u5c5e\u4e8e\u663e\u5f0f\u58f0\u660e）\u3002<\/p>\n<\/li>\n
- \n
\u7528 std::make_unique<UdpServer>(port, defaulthandler) \u521b\u5efa\u5bf9\u8c61：\u51fd\u6570\u540d\u4f5c\u4e3a\u51fd\u6570\u6307\u9488\u4f20\u5165，\u80fd\u9690\u5f0f\u6784\u9020 std::function\u3002<\/p>\n<\/li>\n
- \n
\u542f\u52a8\u987a\u5e8f\u56fa\u5b9a：Init()（\u521b\u5efa+\u7ed1\u5b9a）\u2192 Start()（\u8fdb\u5165\u6b7b\u5faa\u73af，\u6b63\u5e38\u60c5\u51b5\u4e0b\u6c38\u4e0d\u8fd4\u56de）\u3002<\/p>\n<\/li>\n<\/ul>\n
\n6. \u7b2c\u4e94\u90e8\u5206：UDP \u5ba2\u6237\u7aef UdpClient.cc<\/h3>\n
#include<iostream>
\n#include<string>
\n#include<cstdint>
\n#include <sys\/types.h>
\n#include <sys\/socket.h>
\n#include <netinet\/in.h>
\n#include <arpa\/inet.h>
\n#include<cstring>
\n\/\/.\/udpclient serverip + severport
\nint main(int argc,char *argv[])
\n{
\n if(argc!=3)
\n {
\n std::cerr<<"Usage: "<<argv[0]<<" server_ip server_port"<<std::endl;
\n return 1;
\n }<\/p>\nstd::string server_ip = argv[1];
\n uint16_t server_port = std::stoi(argv[2]);
\n int sockfd = socket(AF_INET,SOCK_DGRAM,0);
\n if(sockfd<0)
\n {
\n std::cerr<<"socket error"<<std::endl;
\n return 1;
\n }<\/p>\n\u5ba2\u6237\u7aef\u540c\u6837\u5148\u521b\u5efa UDP \u5957\u63a5\u5b57，\u4f46\u53ea\u586b\u670d\u52a1\u5668\u5730\u5740<\/span>：<\/p>\n
\/\/ client\u8981\u4e0d\u8981bind？\u9700\u8981bind\u3002
\n \/\/ client\u8981\u4e0d\u8981\u663e\u793a\u7684bind？\u4e0d\u8981！！\u9996\u6b21\u53d1\u9001\u6d88\u606f，OS\u4f1a\u81ea\u52a8\u7ed9client\u8fdb\u884cbind，
\n \/\/ OS\u77e5\u9053IP，\u7aef\u53e3\u53f7\u91c7\u7528\u968f\u673a\u7aef\u53e3\u53f7\u7684\u65b9\u5f0f
\n \/\/ \u4e3a\u4ec0\u4e48？\u4e00\u4e2a\u7aef\u53e3\u53f7\u53ea\u80fd\u88ab\u4e00\u4e2a\u8fdb\u7a0bbind，\u4e3a\u4e86\u907f\u514dclient\u7aef\u53e3\u51b2\u7a81
\n struct sockaddr_in server;
\n server.sin_family = AF_INET;
\n server.sin_addr.s_addr = inet_addr(server_ip.c_str());
\n server.sin_port = htons(server_port);<\/p>\n\u8fd9\u91cc\u7684\u6ce8\u91ca\u8bb0\u5f55\u4e86\u4e00\u4e2a\u91cd\u8981\u77e5\u8bc6\u70b9：\u5ba2\u6237\u7aef\u4e0d\u663e\u5f0f bind\u3002\u9996\u6b21 sendto \u65f6\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u81ea\u52a8\u7ed1\u5b9a\u672c\u673a IP \u548c\u4e00\u4e2a\u968f\u673a\u7a7a\u95f2\u7aef\u53e3\u3002\u56e0\u4e3a\u5ba2\u6237\u7aef\u4e0d\u9700\u8981\u88ab\u522b\u4eba"\u4e3b\u52a8\u627e\u5230"，\u968f\u673a\u7aef\u53e3\u8fd8\u80fd\u907f\u514d\u591a\u5f00\u5ba2\u6237\u7aef\u65f6\u7684\u7aef\u53e3\u51b2\u7a81\u3002<\/p>\n
inet_addr \u628a "127.0.0.1" \u8fd9\u79cd\u70b9\u5206\u5341\u8fdb\u5236\u5b57\u7b26\u4e32\u76f4\u63a5\u8f6c\u6210\u7f51\u7edc\u5b57\u8282\u5e8f\u7684 4 \u5b57\u8282\u6574\u6570，\u6240\u4ee5\u4e0d\u9700\u8981\u518d\u5957 htonl\u3002<\/p>\n
\n\u6536\u53d1\u4e3b\u5faa\u73af：<\/p>\n
while(true)
\n {
\n std::string input;
\n std::cout<<"Please Enter# "<<std::flush;
\n if(!std::getline(std::cin,input)) break;
\n if(input.empty()) continue;<\/p>\nint n = sendto(sockfd,input.c_str(),input.size(),0,(struct sockaddr*)&server,sizeof(server));
\n (void) n;
\n char buffer[1024];
\n struct sockaddr_in peer;
\n socklen_t len = sizeof(peer);
\n int m = recvfrom(sockfd,buffer,sizeof(buffer)-1,0,(struct sockaddr*)&peer,&len);
\n if(m>0)
\n {
\n buffer[m] = 0;
\n std::cout<<buffer<<std::endl;
\n }
\n }<\/p>\nreturn 0;
\n}<\/p>\n\u9010\u884c\u8981\u70b9：<\/p>\n
- \n
- \n
std::cout << "Please Enter# " << std::flush;：\u7528 flush \u800c\u4e0d\u662f endl，\u56e0\u4e3a\u53ea\u9700\u8981\u63d0\u793a\u7acb\u5373\u663e\u793a\u3001\u4e0d\u9700\u8981\u6362\u884c（\u5149\u6807\u505c\u5728\u63d0\u793a\u540e\u9762\u65b9\u4fbf\u8f93\u5165）\u3002<\/p>\n<\/li>\n
- \n
if(!std::getline(std::cin,input)) break;：\u8bfb\u53d6\u4e00\u6574\u884c\u3002\u5fc5\u987b\u68c0\u67e5\u8fd4\u56de\u503c\u2014\u2014\u5f53\u8f93\u5165\u7ed3\u675f（Ctrl+D \u89e6\u53d1 EOF）\u65f6 getline \u5931\u8d25，\u82e5\u4e0d\u9000\u51fa\u4f1a\u9677\u5165\u6b7b\u5faa\u73af\u75af\u72c2\u6253\u5370\u63d0\u793a<\/p>\n<\/li>\n
- \n
if(input.empty()) continue;：\u76f4\u63a5\u6309\u56de\u8f66\u4ea7\u751f\u7a7a\u884c\u65f6\u8df3\u8fc7\u53d1\u9001\u3002\u7a7a UDP \u5305\u53d1\u51fa\u540e\u670d\u52a1\u5668 s > 0 \u4e0d\u6210\u7acb\u3001\u4e0d\u56de\u590d，\u5ba2\u6237\u7aef\u4f1a\u6c38\u8fdc\u963b\u585e\u5728 recvfrom\u3002<\/p>\n<\/li>\n
- \n
sendto：\u628a\u6574\u884c\u5b57\u7b26\u4e32\u53d1\u7ed9 server，\u957f\u5ea6\u7528 input.size()（\u4e0d\u542b C \u5b57\u7b26\u4e32\u7ed3\u5c3e\u7684 '\\\\0'，\u7f51\u7edc\u4e0a\u672c\u6765\u4e5f\u4e0d\u8be5\u53d1\u5b83）\u3002<\/p>\n<\/li>\n
- \n
\u968f\u540e\u963b\u585e\u5728 recvfrom \u7b49\u670d\u52a1\u5668\u56de\u590d，\u6536\u5230\u540e\u8865 '\\\\0' \u5e76\u6253\u5370\u3002\u8fd9\u5c31\u662f"\u53d1\u4e00\u53e5\u3001\u7b49\u4e00\u53e5"\u7684\u95ee\u7b54\u6a21\u5f0f\u3002<\/p>\n<\/li>\n<\/ul>\n
\n7. \u7b2c\u516d\u90e8\u5206：Makefile \u4e0e\u7f16\u8bd1\u65b9\u5f0f<\/h3>\n
.PHONY:all
\nall:udpclient udpserver<\/p>\nudpclient:UdpClient.cc
\ng++ -o $@ $^ -std=c++17 -pthread
\nudpserver:UdpServer.cc
\ng++ -o $@ $^ -std=c++17 -pthread<\/p>\n.PHONY:clean
\nclean:
\nrm -f udpclient udpserver<\/p>\n- \n
- \n
$@ \u4ee3\u8868\u76ee\u6807\u540d，$^ \u4ee3\u8868\u6240\u6709\u4f9d\u8d56，\u6240\u4ee5\u4e24\u6761\u89c4\u5219\u5206\u522b\u7b49\u4ef7\u4e8e g++ -o udpclient UdpClient.cc …；<\/p>\n<\/li>\n
- \n
-std=c++17：\u4ee3\u7801\u7528\u4e86 std::filesystem，\u5fc5\u987b C++17；<\/p>\n<\/li>\n
- \n
-pthread：\u4ee3\u7801\u7528\u4e86 pthread \u4e92\u65a5\u9501\u3002\u8fd9\u662f\u5f53\u5929\u8865\u4e0a\u7684\u9009\u9879，\u5b83\u540c\u65f6\u5904\u7406\u9884\u5904\u7406\u5b8f\u548c\u94fe\u63a5\u5e93，\u6bd4\u624b\u5199 -lpthread \u66f4\u89c4\u8303；<\/p>\n<\/li>\n
- \n
.PHONY \u58f0\u660e all \u548c clean \u662f\u4f2a\u76ee\u6807，\u907f\u514d\u76ee\u5f55\u91cc\u6070\u597d\u6709\u540c\u540d\u6587\u4ef6\u65f6\u89c4\u5219\u5931\u6548\u3002<\/p>\n<\/li>\n<\/ul>\n
\u7f16\u8bd1\u4e0e\u6e05\u7406：<\/p>\n
make # \u7f16\u8bd1\u4e24\u4e2a\u7a0b\u5e8f
\nmake clean # \u5220\u9664\u4e24\u4e2a\u53ef\u6267\u884c\u6587\u4ef6<\/p>\n\u8fd0\u884c（\u4e24\u4e2a\u7ec8\u7aef）：<\/p>\n
# \u7ec8\u7aef A：\u670d\u52a1\u5668
\n.\/udpserver 8080<\/p>\n# \u7ec8\u7aef B：\u5ba2\u6237\u7aef
\n.\/udpclient 127.0.0.1 8080<\/p>\n
\n8. \u7b2c\u4e03\u90e8\u5206：\u8fed\u4ee3\u8fc7\u7a0b<\/h3>\n
\u9636\u6bb5\u4e00：\u4ece\u7ed1\u5b9a\u6307\u5b9a IP \u6539\u4e3a INADDR_ANY<\/h4>\n
\u65e9\u671f\u670d\u52a1\u5668\u6784\u9020\u51fd\u6570\u63a5\u6536 (ip, port)，bind \u65f6\u5199：<\/p>\n
local.sin_addr.s_addr = inet_addr(_ip.c_str());<\/p>\n
\u8fd9\u4f1a\u5bfc\u81f4\u670d\u52a1\u5668\u53ea\u63a5\u6536\u53d1\u7ed9\u67d0\u4e00\u4e2a\u5177\u4f53 IP \u7684\u5305\u3002\u540e\u6765\u6539\u4e3a：<\/p>\n
- \n
- \n
\u6784\u9020\u51fd\u6570\u53ea\u6536 port；<\/p>\n<\/li>\n
- \n
local.sin_addr.s_addr = INADDR_ANY;<\/p>\n<\/li>\n
- \n
\u6210\u5458 _ip \u6ce8\u91ca\u4fdd\u7559；<\/p>\n<\/li>\n
- \n
main \u7684\u53c2\u6570\u6821\u9a8c\u4ece argc != 3 \u6539\u4e3a argc != 2，\u542f\u52a8\u65b9\u5f0f\u4ece .\/udpserver 127.0.0.1 8080 \u53d8\u4e3a .\/udpserver 8080\u3002<\/p>\n<\/li>\n<\/ul>\n
\n\u9636\u6bb5\u4e8c：\u5b9e\u6d4b INADDR_ANY \u7684\u542b\u4e49<\/h4>\n
\u6539\u5b8c\u540e\u7528\u7cfb\u7edf\u5de5\u5177\u548c\u4e24\u79cd\u5730\u5740\u5b9e\u6d4b：<\/p>\n
UNCONN 0 0 0.0.0.0:8080 0.0.0.0:*<\/p>\n
ss -uln \u663e\u793a\u76d1\u542c\u5728 0.0.0.0:8080（-u UDP\u3001-l listening\u3001-n \u6570\u5b57\u683c\u5f0f），\u5373\u6240\u6709\u7f51\u5361\u3002\u5ba2\u6237\u7aef\u5206\u522b\u7528\u56de\u73af\u5730\u5740\u548c\u771f\u5b9e\u7f51\u5361 IP \u90fd\u80fd\u901a：<\/p>\n
=== \u7528\u56de\u73af\u5730\u5740 127.0.0.1 \u8bbf\u95ee ===
\nPlease Enter# server echo@via loopback
\n=== \u7528\u771f\u5b9e\u7f51\u5361IP 10.0.0.2 \u8bbf\u95ee ===
\nPlease Enter# server echo@via lan ip<\/p>\n\u8fd9\u6f84\u6e05\u4e86"\u4efb\u610f IP"\u7684\u4e24\u5c42\u542b\u4e49：\u670d\u52a1\u5668\u7ed1\u5b9a\u672c\u673a\u6240\u6709\u7f51\u5361（INADDR_ANY \u7684\u4f5c\u7528）；UDP \u672c\u8eab\u4e0d\u6821\u9a8c\u5ba2\u6237\u7aef\u6765\u6e90，\u4efb\u4f55\u5730\u5740\u53d1\u6765\u7684\u5305\u90fd\u63a5\u6536\u3002\u4f46\u8de8\u673a\u5668\u80fd\u5426\u8fde\u901a\u8fd8\u53d6\u51b3\u4e8e\u8def\u7531\u53ef\u8fbe\u6027\u548c\u9632\u706b\u5899\/\u5b89\u5168\u7ec4\u662f\u5426\u653e\u884c UDP \u7aef\u53e3\u3002<\/p>\n
\n\u9636\u6bb5\u4e09：\u8bc6\u522b\u53d1\u9001\u65b9 IP \u548c\u7aef\u53e3<\/h4>\n
\u5728 recvfrom \u4e4b\u540e\u65b0\u589e：<\/p>\n
int peer_port = ntohs(peer.sin_port);
\nstd::string peer_ip = inet_ntoa(peer.sin_addr);<\/p>\n\u5e76\u6253\u5370 DEBUG \u65e5\u5fd7<\/p>\n
[127.0.0.1:37509]# hello world
\n[127.0.0.1:56592]# \u6211\u662f\u5ba2\u6237\u7aefB
\n[127.0.0.1:33066]# \u6211\u662f\u5ba2\u6237\u7aefA
\n[10.0.0.2:57611]# via lan ip<\/p>\n\u65e5\u5fd7\u6e05\u695a\u663e\u793a：\u6bcf\u4e2a\u5ba2\u6237\u7aef\u7684\u6e90\u7aef\u53e3\u7531\u64cd\u4f5c\u7cfb\u7edf\u968f\u673a\u5206\u914d（37509\u300156592\u300133066\u2026\u2026），\u670d\u52a1\u5668\u6b63\u662f\u9760 peer \u91cc\u7684\u8fd9\u4e2a\u5730\u5740\u628a\u56de\u590d\u51c6\u786e\u53d1\u56de\u5bf9\u5e94\u5ba2\u6237\u7aef\u3002<\/p>\n
\n\u9636\u6bb5\u56db：\u91cd\u6784\u4e3a\u56de\u8c03\u6a21\u5f0f<\/h4>\n
\u6700\u540e\u4e00\u6b21\u91cd\u6784\u628a"\u4e1a\u52a1\u5904\u7406"\u4ece\u670d\u52a1\u5668\u91cc\u5265\u79bb：<\/p>\n
- \n
- \n
\u65b0\u589e using func_t = std::function<std::string(const std::string&)>;<\/p>\n<\/li>\n
- \n
\u6784\u9020\u51fd\u6570\u589e\u52a0 func_t func \u53c2\u6570，\u4fdd\u5b58\u4e3a\u6210\u5458 _func；<\/p>\n<\/li>\n
- \n
\u6536\u53d1\u5faa\u73af\u4e2d\u5199\u6b7b\u7684 "server echo@" \u62fc\u63a5\u88ab\u5220\u9664，\u6539\u4e3a std::string result = _func(buffer); \u540e\u53d1\u56de result；<\/p>\n<\/li>\n
- \n
main \u91cc\u5b9a\u4e49\u6d4b\u8bd5\u51fd\u6570 defaulthandler（\u52a0 hello, \u524d\u7f00）\u5e76\u6ce8\u5165\u3002<\/p>\n<\/li>\n<\/ul>\n
\u6700\u7ec8\u5b9e\u6d4b（\u90e8\u5206\u8f93\u51fa）：<\/p>\n
hello, world
\nhello, UDP\u670d\u52a1\u5668
\nhello, 3.14
\nhello, !@#$%<\/p>\n\u81f3\u6b64，\u6211\u4eec\u7684\u7f51\u7edc\u6846\u67b6（UdpServer）\u4e0e\u4e1a\u52a1\u903b\u8f91（handler）\u5f7b\u5e95\u89e3\u8026\u3002<\/p>\n
\n9. \u7b2c\u516b\u90e8\u5206：\u5b9e\u6d4b\u6c47\u603b<\/h3>\n
\u7f16\u8bd1：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916233310-6aab27363c7db.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916233310-6aab27369e284.png\")
<\/p>\n\u670d\u52a1\u5668\u542f\u52a8\u65e5\u5fd7，\u591a\u7ec4\u6d4b\u8bd5\u7ed3\u679c：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916233310-6aab2736af3e8.png\")
<\/p>\n
\n10. \u7b2c\u4e5d\u90e8\u5206：\u77e5\u8bc6\u70b9\u56de\u987e<\/h3>\n
\u7f51\u7edc\u7f16\u7a0b<\/p>\n
- \n
UDP \u56db\u4ef6\u5957：socket(AF_INET, SOCK_DGRAM, 0) \u2192 bind \u2192 recvfrom \u2192 sendto，\u65e0\u8fde\u63a5\u3001\u65e0 listen\/accept\u3002<\/p>\n<\/li>\n
- \n
sockaddr_in \u4e09\u4e2a\u5fc5\u586b\u5b57\u6bb5：sin_family\u3001sin_port（htons）\u3001sin_addr.s_addr\u3002<\/p>\n<\/li>\n
- \n
\u7f51\u7edc\u5b57\u8282\u5e8f\u662f\u5927\u7aef：\u7aef\u53e3\u7528 htons\/ntohs；inet_addr \u548c inet_ntoa \u5185\u90e8\u5df2\u5904\u7406\u5b57\u8282\u5e8f\u3002<\/p>\n<\/li>\n
- \n
INADDR_ANY（0.0.0.0）\u76d1\u542c\u6240\u6709\u7f51\u5361；\u670d\u52a1\u5668\u5fc5\u987b\u663e\u5f0f bind，\u5ba2\u6237\u7aef\u7531 OS \u5728\u9996\u6b21\u53d1\u9001\u65f6\u81ea\u52a8 bind \u968f\u673a\u7aef\u53e3\u3002<\/p>\n<\/li>\n
- \n
recvfrom \u540c\u65f6\u5e26\u56de\u5bf9\u7aef\u5730\u5740，UDP \u9760\u5b83\u652f\u6301\u591a\u5ba2\u6237\u7aef\u3001\u56de\u590d\u62a5\u6587\u3002<\/p>\n<\/li>\n
- \n
UDP \u6570\u636e\u62a5\u4e0d\u5e26 '\\\\0'，\u6536\u5230\u540e\u5fc5\u987b\u624b\u52a8 buffer[s] = 0 \u624d\u80fd\u5f53 C \u5b57\u7b26\u4e32\u7528\u3002<\/p>\n<\/li>\n
C++ \u4e0e\u5de5\u7a0b\u5316<\/p>\n
- \n
RAII：LockGuard \u6784\u9020\u52a0\u9501\u3001\u6790\u6784\u89e3\u9501；unique_ptr \u7ba1\u7406\u7b56\u7565\u5bf9\u8c61\u548c\u670d\u52a1\u5668\u5bf9\u8c61\u3002<\/p>\n<\/li>\n
- \n
\u7b56\u7565\u6a21\u5f0f：\u62bd\u8c61\u57fa\u7c7b + \u4e24\u4e2a\u5177\u4f53\u7b56\u7565，\u8fd0\u884c\u671f\u66ff\u6362 _fflush_strategy\u3002<\/p>\n<\/li>\n
- \n
\u6d41\u5f0f\u65e5\u5fd7\u539f\u7406：\u4e34\u65f6\u5bf9\u8c61\u7528 operator<< \u7d2f\u79ef\u5b57\u7b26\u4e32，\u6790\u6784\u65f6\u7edf\u4e00\u5237\u51fa；__FILE__\/__LINE__ \u9760\u5b8f\u6ce8\u5165\u3002<\/p>\n<\/li>\n
- \n
std::endl \u662f\u51fd\u6570\u6a21\u677f，\u81ea\u5b9a\u4e49\u6d41\u5f0f\u7c7b\u5fc5\u987b\u4e3a\u6d41\u64cd\u7eb5\u7b26\u5355\u72ec\u5199\u91cd\u8f7d\u3002<\/p>\n<\/li>\n
- \n
std::function \u56de\u8c03\u5b9e\u73b0\u7f51\u7edc\u6846\u67b6\u4e0e\u4e1a\u52a1\u89e3\u8026\u3002<\/p>\n<\/li>\n
- \n
std::filesystem::create_directories（C++17）\u5efa\u76ee\u5f55；localtime_r \u662f\u7ebf\u7a0b\u5b89\u5168\u65f6\u95f4\u8f6c\u6362\u3002<\/p>\n<\/li>\n
- \n
\u7f16\u8bd1\u9009\u9879：C++17 \u914d -std=c++17，pthread \u914d -pthread\u3002<\/p>\n<\/li>\n
\n11.\u6700\u7ec8\u4ee3\u7801\u5982\u4e0b：<\/h3>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916233311-6aab27372a381.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916233311-6aab273756d27.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916233313-6aab27391ab70.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916233315-6aab273b5307f.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916233316-6aab273c1f506.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916233316-6aab273c8d09f.png\")
<\/p>\n","protected":false},"excerpt":{"rendered":"UDP socket \u7f16\u7a0b\u3001sockaddr_in \u4e0e\u7f51\u7edc\u5b57\u8282\u5e8f\u3001INADDR_ANY\u3001pthread \u4e92\u65a5\u9501\u4e0e RAII\u3001\u7b56\u7565\u6a21\u5f0f\u3001std::function \u56de\u8c03\u3001\u6d41\u5f0f\u65e5\u5fd7\u7684\u5b9e\u73b0\u539f\u7406\u30021. \u9879\u76ee\u91cc\u6709\u4ec0\u4e48\u5305\u542b 6 \u4e2a\u6e90\u6587\u4ef6：\u6587\u4ef6\u804c\u8d23Mutex.hpp\u5bf9 pthread \u4e92\u65a5\u9501\u7684 C \u5c01\u88c5，\u5916\u52a0 RAII \u9501\u5b88\u536b LockGuardLog.hpp\u65e5\u5fd7\u6a21\u5757：\u65e5\u5fd7\u7b49\u7ea7\u3001\u65f6\u95f4\u6233\u3001\u6d41\u5f0f\u8f93\u51fa\u3001\u5c4f\u5e55\/\u6587\u4ef6\u4e24\u79cd\u5237\u65b0\u7b56\u7565UdpServer.hppUD<\/p>\n","protected":false},"author":2,"featured_media":106322,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[12070,11653,193,43,3063,44],"topic":[],"class_list":["post-106331","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-udp","tag-11653","tag-43","tag-3063","tag-44"],"yoast_head":"\n
\u3010Linux\u7f51\u7edc\u52a0\u9910\uff08\u4e09\uff09\u3011\u5b66\u4e60\u5168\u8bb0\u5f55\uff1aUDP \u56de\u58f0\u670d\u52a1\u5668 + \u7b56\u7565\u6a21\u5f0f\u65e5\u5fd7\u6a21\u5757 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/106331.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010Linux\u7f51\u7edc\u52a0\u9910\uff08\u4e09\uff09\u3011\u5b66\u4e60\u5168\u8bb0\u5f55\uff1aUDP \u56de\u58f0\u670d\u52a1\u5668 + \u7b56\u7565\u6a21\u5f0f\u65e5\u5fd7\u6a21\u5757 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"UDP socket \u7f16\u7a0b\u3001sockaddr_in \u4e0e\u7f51\u7edc\u5b57\u8282\u5e8f\u3001INADDR_ANY\u3001pthread \u4e92\u65a5\u9501\u4e0e RAII\u3001\u7b56\u7565\u6a21\u5f0f\u3001std::function \u56de\u8c03\u3001\u6d41\u5f0f\u65e5\u5fd7\u7684\u5b9e\u73b0\u539f\u7406\u30021. \u9879\u76ee\u91cc\u6709\u4ec0\u4e48\u5305\u542b 6 \u4e2a\u6e90\u6587\u4ef6：\u6587\u4ef6\u804c\u8d23Mutex.hpp\u5bf9 pthread \u4e92\u65a5\u9501\u7684 C \u5c01\u88c5，\u5916\u52a0 RAII \u9501\u5b88\u536b LockGuardLog.hpp\u65e5\u5fd7\u6a21\u5757：\u65e5\u5fd7\u7b49\u7ea7\u3001\u65f6\u95f4\u6233\u3001\u6d41\u5f0f\u8f93\u51fa\u3001\u5c4f\u5e55\/\u6587\u4ef6\u4e24\u79cd\u5237\u65b0\u7b56\u7565UdpServer.hppUD\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/106331.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-16T23:33:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916233310-6aab27363c7db.png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"12 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/106331.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/106331.html\",\"name\":\"\u3010Linux\u7f51\u7edc\u52a0\u9910\uff08\u4e09\uff09\u3011\u5b66\u4e60\u5168\u8bb0\u5f55\uff1aUDP \u56de\u58f0\u670d\u52a1\u5668 + \u7b56\u7565\u6a21\u5f0f\u65e5\u5fd7\u6a21\u5757 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-09-16T23:33:18+00:00\",\"dateModified\":\"2026-09-16T23:33:18+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/106331.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/106331.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/106331.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u3010Linux\u7f51\u7edc\u52a0\u9910\uff08\u4e09\uff09\u3011\u5b66\u4e60\u5168\u8bb0\u5f55\uff1aUDP \u56de\u58f0\u670d\u52a1\u5668 + \u7b56\u7565\u6a21\u5f0f\u65e5\u5fd7\u6a21\u5757\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\u3010Linux\u7f51\u7edc\u52a0\u9910\uff08\u4e09\uff09\u3011\u5b66\u4e60\u5168\u8bb0\u5f55\uff1aUDP \u56de\u58f0\u670d\u52a1\u5668 + \u7b56\u7565\u6a21\u5f0f\u65e5\u5fd7\u6a21\u5757 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/106331.html","og_locale":"zh_CN","og_type":"article","og_title":"\u3010Linux\u7f51\u7edc\u52a0\u9910\uff08\u4e09\uff09\u3011\u5b66\u4e60\u5168\u8bb0\u5f55\uff1aUDP \u56de\u58f0\u670d\u52a1\u5668 + \u7b56\u7565\u6a21\u5f0f\u65e5\u5fd7\u6a21\u5757 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"UDP socket \u7f16\u7a0b\u3001sockaddr_in \u4e0e\u7f51\u7edc\u5b57\u8282\u5e8f\u3001INADDR_ANY\u3001pthread \u4e92\u65a5\u9501\u4e0e RAII\u3001\u7b56\u7565\u6a21\u5f0f\u3001std::function \u56de\u8c03\u3001\u6d41\u5f0f\u65e5\u5fd7\u7684\u5b9e\u73b0\u539f\u7406\u30021. \u9879\u76ee\u91cc\u6709\u4ec0\u4e48\u5305\u542b 6 \u4e2a\u6e90\u6587\u4ef6：\u6587\u4ef6\u804c\u8d23Mutex.hpp\u5bf9 pthread \u4e92\u65a5\u9501\u7684 C \u5c01\u88c5，\u5916\u52a0 RAII \u9501\u5b88\u536b LockGuardLog.hpp\u65e5\u5fd7\u6a21\u5757：\u65e5\u5fd7\u7b49\u7ea7\u3001\u65f6\u95f4\u6233\u3001\u6d41\u5f0f\u8f93\u51fa\u3001\u5c4f\u5e55\/\u6587\u4ef6\u4e24\u79cd\u5237\u65b0\u7b56\u7565UdpServer.hppUD","og_url":"https:\/\/www.wsisp.com\/helps\/106331.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-09-16T23:33:18+00:00","og_image":[{"url":"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916233310-6aab27363c7db.png"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"12 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/106331.html","url":"https:\/\/www.wsisp.com\/helps\/106331.html","name":"\u3010Linux\u7f51\u7edc\u52a0\u9910\uff08\u4e09\uff09\u3011\u5b66\u4e60\u5168\u8bb0\u5f55\uff1aUDP \u56de\u58f0\u670d\u52a1\u5668 + \u7b56\u7565\u6a21\u5f0f\u65e5\u5fd7\u6a21\u5757 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2026-09-16T23:33:18+00:00","dateModified":"2026-09-16T23:33:18+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/106331.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/106331.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/106331.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"\u3010Linux\u7f51\u7edc\u52a0\u9910\uff08\u4e09\uff09\u3011\u5b66\u4e60\u5168\u8bb0\u5f55\uff1aUDP \u56de\u58f0\u670d\u52a1\u5668 + \u7b56\u7565\u6a21\u5f0f\u65e5\u5fd7\u6a21\u5757"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/106331","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=106331"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/106331\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media\/106322"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=106331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=106331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=106331"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=106331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- \n
- \n
- \n
- \n
- \n
- \n
- \n
- \n
- \n
- \n
- \n
- \n