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https://github.com/tribufu/sdk-cpp
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Add libhv and test http client
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270
vendor/libhv/include/hv/HttpService.h
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270
vendor/libhv/include/hv/HttpService.h
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#ifndef HV_HTTP_SERVICE_H_
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#define HV_HTTP_SERVICE_H_
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#include <string>
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#include <map>
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#include <unordered_map>
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#include <vector>
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#include <list>
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#include <memory>
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#include <functional>
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#include "hexport.h"
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#include "HttpMessage.h"
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#include "HttpResponseWriter.h"
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#include "HttpContext.h"
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#define DEFAULT_BASE_URL "/api/v1"
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#define DEFAULT_DOCUMENT_ROOT "/var/www/html"
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#define DEFAULT_HOME_PAGE "index.html"
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#define DEFAULT_ERROR_PAGE "error.html"
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#define DEFAULT_INDEXOF_DIR "/downloads/"
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#define DEFAULT_KEEPALIVE_TIMEOUT 75000 // ms
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// for FileCache
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#define MAX_FILE_CACHE_SIZE (1 << 22) // 4M
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#define DEFAULT_FILE_CACHE_STAT_INTERVAL 10 // s
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#define DEFAULT_FILE_CACHE_EXPIRED_TIME 60 // s
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/*
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* @param[in] req: parsed structured http request
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* @param[out] resp: structured http response
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* @return 0: handle next
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* http_status_code: handle done
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*/
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#define HTTP_STATUS_NEXT 0
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#define HTTP_STATUS_UNFINISHED 0
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// NOTE: http_sync_handler run on IO thread
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typedef std::function<int(HttpRequest* req, HttpResponse* resp)> http_sync_handler;
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// NOTE: http_async_handler run on hv::async threadpool
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typedef std::function<void(const HttpRequestPtr& req, const HttpResponseWriterPtr& writer)> http_async_handler;
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// NOTE: http_ctx_handler run on IO thread, you can easily post HttpContextPtr to your consumer thread for processing.
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typedef std::function<int(const HttpContextPtr& ctx)> http_ctx_handler;
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// NOTE: http_state_handler run on IO thread
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typedef std::function<int(const HttpContextPtr& ctx, http_parser_state state, const char* data, size_t size)> http_state_handler;
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struct http_handler {
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http_sync_handler sync_handler;
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http_async_handler async_handler;
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http_ctx_handler ctx_handler;
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http_state_handler state_handler;
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http_handler() {}
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http_handler(http_sync_handler fn) : sync_handler(std::move(fn)) {}
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http_handler(http_async_handler fn) : async_handler(std::move(fn)) {}
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http_handler(http_ctx_handler fn) : ctx_handler(std::move(fn)) {}
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http_handler(http_state_handler fn) : state_handler(std::move(fn)) {}
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http_handler(const http_handler& rhs)
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: sync_handler(std::move(rhs.sync_handler))
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, async_handler(std::move(rhs.async_handler))
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, ctx_handler(std::move(rhs.ctx_handler))
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, state_handler(std::move(rhs.state_handler))
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{}
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const http_handler& operator=(http_sync_handler fn) {
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sync_handler = std::move(fn);
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return *this;
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}
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const http_handler& operator=(http_async_handler fn) {
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async_handler = std::move(fn);
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return *this;
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}
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const http_handler& operator=(http_ctx_handler fn) {
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ctx_handler = std::move(fn);
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return *this;
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}
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const http_handler& operator=(http_state_handler fn) {
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state_handler = std::move(fn);
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return *this;
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}
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bool isNull() {
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return sync_handler == NULL &&
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async_handler == NULL &&
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ctx_handler == NULL;
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}
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operator bool() {
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return !isNull();
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}
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};
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typedef std::vector<http_handler> http_handlers;
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struct http_method_handler {
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http_method method;
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http_handler handler;
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http_method_handler() {}
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http_method_handler(http_method m, const http_handler& h) : method(m), handler(h) {}
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};
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// method => http_method_handler
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typedef std::list<http_method_handler> http_method_handlers;
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// path => http_method_handlers
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typedef std::unordered_map<std::string, std::shared_ptr<http_method_handlers>> http_path_handlers;
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namespace hv {
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struct HV_EXPORT HttpService {
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// preprocessor -> middleware -> processor -> postprocessor
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http_handler preprocessor;
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http_handlers middleware;
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// processor: pathHandlers -> staticHandler -> errorHandler
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http_handler processor;
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http_handler postprocessor;
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// api service (that is http.ApiServer)
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std::string base_url;
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http_path_handlers pathHandlers;
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// file service (that is http.FileServer)
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http_handler staticHandler;
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http_handler largeFileHandler;
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std::string document_root;
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std::string home_page;
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std::string error_page;
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// nginx: location => root
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std::map<std::string, std::string, std::greater<std::string>> staticDirs;
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// indexof service (that is http.DirectoryServer)
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std::string index_of;
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http_handler errorHandler;
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// proxy service (that is http.ProxyServer)
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// nginx: location => proxy_pass
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std::map<std::string, std::string, std::greater<std::string>> proxies;
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int proxy_connect_timeout;
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int proxy_read_timeout;
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int proxy_write_timeout;
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// options
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int keepalive_timeout;
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int max_file_cache_size; // cache small file
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int file_cache_stat_interval; // stat file is modified
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int file_cache_expired_time; // remove expired file cache
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/*
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* @test limit_rate
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* @build make examples
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* @server bin/httpd -c etc/httpd.conf -s restart -d
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* @client bin/wget http://127.0.0.1:8080/downloads/test.zip
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*/
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int limit_rate; // limit send rate, unit: KB/s
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unsigned enable_forward_proxy :1;
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HttpService() {
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// base_url = DEFAULT_BASE_URL;
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document_root = DEFAULT_DOCUMENT_ROOT;
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home_page = DEFAULT_HOME_PAGE;
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// error_page = DEFAULT_ERROR_PAGE;
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// index_of = DEFAULT_INDEXOF_DIR;
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proxy_connect_timeout = DEFAULT_CONNECT_TIMEOUT;
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proxy_read_timeout = 0;
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proxy_write_timeout = 0;
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keepalive_timeout = DEFAULT_KEEPALIVE_TIMEOUT;
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max_file_cache_size = MAX_FILE_CACHE_SIZE;
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file_cache_stat_interval = DEFAULT_FILE_CACHE_STAT_INTERVAL;
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file_cache_expired_time = DEFAULT_FILE_CACHE_EXPIRED_TIME;
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limit_rate = -1; // unlimited
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enable_forward_proxy = 0;
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}
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void AddRoute(const char* path, http_method method, const http_handler& handler);
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// @retval 0 OK, else HTTP_STATUS_NOT_FOUND, HTTP_STATUS_METHOD_NOT_ALLOWED
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int GetRoute(const char* url, http_method method, http_handler** handler);
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// RESTful API /:field/ => req->query_params["field"]
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int GetRoute(HttpRequest* req, http_handler** handler);
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// Static("/", "/var/www/html")
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void Static(const char* path, const char* dir);
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// @retval / => /var/www/html/index.html
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std::string GetStaticFilepath(const char* path);
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// https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS
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void AllowCORS();
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// forward proxy
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void EnableForwardProxy() { enable_forward_proxy = 1; }
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// reverse proxy
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// Proxy("/api/v1/", "http://www.httpbin.org/");
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void Proxy(const char* path, const char* url);
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// @retval /api/v1/test => http://www.httpbin.org/test
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std::string GetProxyUrl(const char* path);
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hv::StringList Paths() {
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hv::StringList paths;
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for (auto& pair : pathHandlers) {
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paths.emplace_back(pair.first);
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}
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return paths;
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}
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// Handler = [ http_sync_handler, http_ctx_handler ]
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template<typename Handler>
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void Use(Handler handlerFunc) {
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middleware.emplace_back(handlerFunc);
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}
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// Inspired by github.com/gin-gonic/gin
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// Handler = [ http_sync_handler, http_async_handler, http_ctx_handler, http_state_handler ]
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template<typename Handler>
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void Handle(const char* httpMethod, const char* relativePath, Handler handlerFunc) {
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AddRoute(relativePath, http_method_enum(httpMethod), http_handler(handlerFunc));
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}
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// HEAD
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template<typename Handler>
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void HEAD(const char* relativePath, Handler handlerFunc) {
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Handle("HEAD", relativePath, handlerFunc);
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}
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// GET
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template<typename Handler>
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void GET(const char* relativePath, Handler handlerFunc) {
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Handle("GET", relativePath, handlerFunc);
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}
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// POST
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template<typename Handler>
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void POST(const char* relativePath, Handler handlerFunc) {
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Handle("POST", relativePath, handlerFunc);
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}
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// PUT
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template<typename Handler>
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void PUT(const char* relativePath, Handler handlerFunc) {
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Handle("PUT", relativePath, handlerFunc);
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}
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// DELETE
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// NOTE: Windows <winnt.h> #define DELETE as a macro, we have to replace DELETE with Delete.
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template<typename Handler>
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void Delete(const char* relativePath, Handler handlerFunc) {
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Handle("DELETE", relativePath, handlerFunc);
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}
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// PATCH
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template<typename Handler>
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void PATCH(const char* relativePath, Handler handlerFunc) {
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Handle("PATCH", relativePath, handlerFunc);
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}
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// Any
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template<typename Handler>
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void Any(const char* relativePath, Handler handlerFunc) {
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Handle("HEAD", relativePath, handlerFunc);
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Handle("GET", relativePath, handlerFunc);
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Handle("POST", relativePath, handlerFunc);
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Handle("PUT", relativePath, handlerFunc);
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Handle("DELETE", relativePath, handlerFunc);
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Handle("PATCH", relativePath, handlerFunc);
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}
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};
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}
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#endif // HV_HTTP_SERVICE_H_
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