初始提交

.gitignore

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+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+build/
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+.vscode/
+.cache/

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.10.0)
+project(unix_network_programming VERSION 0.1.0 LANGUAGES C CXX)
+
+add_executable(unix_network_programming main.cpp)
+

CMakePresets.json

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+{
+    "version": 8,
+    "configurePresets": [
+        {
+            "name": "clang",
+            "displayName": "Clang 17.0.0 arm64-apple-darwin24.3.0",
+            "description": "正在使用编译器: C = /usr/bin/clang, CXX = /usr/bin/clang++",
+            "binaryDir": "${sourceDir}/out/build/${presetName}",
+            "cacheVariables": {
+                "CMAKE_INSTALL_PREFIX": "${sourceDir}/out/install/${presetName}",
+                "CMAKE_C_COMPILER": "/usr/bin/clang",
+                "CMAKE_CXX_COMPILER": "/usr/bin/clang++",
+                "CMAKE_BUILD_TYPE": "Debug"
+            }
+        }
+    ]
+}

lib/sock_ntop.c

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+#include <cstdio>
+#include <cstring>
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+
+char *
+sock_ntop(const struct sockaddr *sa, socklen_t salen)
+{
+    char portstr[8];
+    static char str[128];       // Unix domain is largest
+
+    switch (sa -> sa_family) {
+    case AF_INET: {
+            struct sockaddr_in *sin = (struct sockaddr_in *) sa;
+            if (inet_ntop(AF_INET, &sin->sin_addr, str, sizeof(str)) == NULL)
+                return NULL;
+            if (ntohs(sin->sin_port) != 0) {
+                snprintf(portstr, sizeof(portstr), ":%d", ntohs(sin->sin_port));
+                strcat(str, portstr);
+            }
+            return str;
+        }
+
+    case AF_INET6: {
+            struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa;
+            str[0] = '[';
+            if (inet_ntop(AF_INET6, &sin6->sin6_addr, str+1, sizeof(str) - 1) == NULL)
+                return NULL;
+            if (ntohs(sin6->sin6_port) != 0) {
+                // 如果sin6中端口数字解释正常的话
+                snprintf(portstr, sizeof(portstr), "]:%d", ntohs(sin6->sin6_port));
+                strcat(str, portstr);
+                return str;
+            }
+
+            // 排除'['
+            return str + 1;
+        }
+    }
+
+    
+
+    return NULL;
+}

main.cpp

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+#include <iostream>
+
+int main(int, char**){
+    std::cout << "Hello, from unix_network_programming!\n";
+}