A C++ header-only HTTP/HTTPS server and client library
https://github.com/yhirose/cpp-httplib
Windows下Qt Http Server例子
pro文件 SOURCES += main.cpp HEADERS += httplib.h LIBS += -lWs2_32
main.cpp #include <httplib.h> using namespace httplib; void wuhan(const Request &req, Response &res) { printf("httplib server recv a req: %s ", req.path.c_str() ); res.set_content("<html> <meta http-equiv="Content-Type" content="text/html;charset=utf-8"> <h1> 武汉, 加油！</h1></html>", "text/html"); res.status = 200; } int main(void) { using namespace httplib; Server svr; svr.set_base_dir("./"); /// Get svr.Get("/wuhan", wuhan); svr.Get("/hi", [](const Request& req, Response& res) { res.set_content("Hello World!", "text/plain"); }); svr.Get(R"(/numbers/(d+))", [&](const Request& req, Response& res) { auto numbers = req.matches[1]; res.set_content(numbers, "text/plain"); }); svr.Get("/body-header-param", [](const Request& req, Response& res) { if (req.has_header("Content-Length")) { auto val = req.get_header_value("Content-Length"); } if (req.has_param("key")) { auto val = req.get_param_value("key"); } res.set_content(req.body, "text/plain"); }); svr.Get("/stop", [&](const Request& req, Response& res) { svr.stop(); }); /// listen svr.listen("localhost", 1234); }
浏览器输入：localhost:1234
默认打开当前目录下的index.html页面。
VS Https Server例子
首先需要下载安装OpenSSL，请自行百度
openssl 生成公钥、密钥及.pem文件
使用openssl 生成免费证书
使用openssl生成https证书
用Node.js创建自签名的HTTPS服务器
PEM转CRT文件：
openssl x509 -outform der -in your-cert.pem -out your-cert.crt
https服务端：
#include <chrono> #include <cstdio> #include <httplib.h> #define SERVER_CERT_FILE "./cert.pem" #define SERVER_PRIVATE_KEY_FILE "./key.pem" using namespace httplib; std::string dump_headers(const Headers &headers) { std::string s; char buf[BUFSIZ]; for (auto it = headers.begin(); it != headers.end(); ++it) { const auto &x = *it; snprintf(buf, sizeof(buf), "%s: %s ", x.first.c_str(), x.second.c_str()); s += buf; } return s; } std::string log(const Request &req, const Response &res) { std::string s; char buf[BUFSIZ]; s += "================================ "; snprintf(buf, sizeof(buf), "%s %s %s", req.method.c_str(), req.version.c_str(), req.path.c_str()); s += buf; std::string query; for (auto it = req.params.begin(); it != req.params.end(); ++it) { const auto &x = *it; snprintf(buf, sizeof(buf), "%c%s=%s", (it == req.params.begin()) ? '?' : '&', x.first.c_str(), x.second.c_str()); query += buf; } snprintf(buf, sizeof(buf), "%s ", query.c_str()); s += buf; s += dump_headers(req.headers); s += "-------------------------------- "; snprintf(buf, sizeof(buf), "%d %s ", res.status, res.version.c_str()); s += buf; s += dump_headers(res.headers); s += " "; if (!res.body.empty()) { s += res.body; } s += " "; return s; } int main(void) { #ifdef CPPHTTPLIB_OPENSSL_SUPPORT SSLServer svr(SERVER_CERT_FILE, SERVER_PRIVATE_KEY_FILE); #else Server svr; #endif if (!svr.is_valid()) { printf("server has an error... "); return -1; } svr.Get("/", [=](const Request & /*req*/, Response &res) { res.set_redirect("/hi"); }); svr.Get("/hi", [](const Request & /*req*/, Response &res) { res.set_content("Hello World! ", "text/plain"); }); svr.Get("/slow", [](const Request & /*req*/, Response &res) { std::this_thread::sleep_for(std::chrono::seconds(2)); res.set_content("Slow... ", "text/plain"); }); svr.Get("/dump", [](const Request &req, Response &res) { res.set_content(dump_headers(req.headers), "text/plain"); }); svr.Get("/stop", [&](const Request & /*req*/, Response & /*res*/) { svr.stop(); }); svr.set_error_handler([](const Request & /*req*/, Response &res) { const char *fmt = "<p>Error Status: <span style='color:red;'>%d</span></p>"; char buf[BUFSIZ]; snprintf(buf, sizeof(buf), fmt, res.status); res.set_content(buf, "text/html"); }); svr.set_logger([](const Request &req, const Response &res) { printf("%s", log(req, res).c_str()); }); svr.listen("localhost", 8080); return 0; }
Https客户端：
#include <httplib.h> #include <iostream> //#define CA_CERT_FILE "./ca-bundle.crt" #define CA_CERT_FILE "./cacert.crt" using namespace std; int main(void) { #ifdef CPPHTTPLIB_OPENSSL_SUPPORT httplib::SSLClient cli("localhost", 8080); // httplib::SSLClient cli("google.com"); // httplib::SSLClient cli("www.youtube.com"); cli.set_ca_cert_path(CA_CERT_FILE); cli.enable_server_certificate_verification(true); #else httplib::Client cli("localhost", 8080); #endif auto res = cli.Get("/hi"); if (res) { cout << res->status << endl; cout << res->get_header_value("Content-Type") << endl; cout << res->body << endl; } else { #ifdef CPPHTTPLIB_OPENSSL_SUPPORT auto result = cli.get_openssl_verify_result(); if (result) { cout << "verify error: " << X509_verify_cert_error_string(result) << endl; } #endif } return 0; }
关于使用SSL的工程配置说明：
1、通过宏开关CPPHTTPLIB_OPENSSL_SUPPORT控制是否使用Https
2、若使用Https，加入openssl包含路径：C:OpenSSL-Win64include，加入openssl的导入库路径C:OpenSSL-Win64lib，并链接libcrypto.lib、libssl.lib、openssl.lib。
浏览器访问：
由于自己测试，所以没有CA证书，而构造一个自签名的证书。
CA签名的证书兼具身份证明和加密双重功能，而由于自证身份不可信，自签名证书就只有加密功能，用于无需身份证明的场合。
所以cli.enable_server_certificate_verification(true);这句调用可以注释掉，不要服务端身份证明，只数据加密即可。
简单学习，进攻参考！