C ++ http service

1. The need to use c ++ http provide services, I had wanted to use libevent, but after some searching, found only two references mongoose library file.

The official document: https://cesanta.com/docs/overview/intro.html

Official Code: https://github.com/cesanta/mongoose

 

2. The relevant code

#include "HttpService.h"

struct mg_serve_http_opts HttpService::s_http_server_opts;

//请求事件处理
void HttpService::mgEvHandler(struct mg_connection *nc, int ev, void *p) {
    //处理request
    if (ev == MG_EV_HTTP_REQUEST) {
        struct http_message *msg = (struct http_message *)p;

        //body内容
        char* body = new char[msg->body.len + 1];
        memset(body, 0, Msg-> + body.len . 1 ); 
        the memcpy (body, MSG -> body.p, msg-> body.len); 

        // URI content 
        char * URI = new new  char [msg-> uri.len + . 1 ] ; 
        Memset (URI, 0 , msg-> + uri.len . 1 ); 
        the memcpy (URI, MSG -> uri.p, msg-> uri.len); 

        // return body information 
        mgSendBody (NC, " body Content " ) ; 

        // returns download file
         // mgSendFile ( "path relative to the s_http_server_opts.document_root"); 

        Delete URI;
         Delete  body;
    }
} 

// Send message body 
void the HttpService :: mgSendBody ( struct mg_connection NC *, const  char * Content) { 
    mg_send_head (NC, 200 is , strlen (Content), " the Content-the Type: text / Plain \ R & lt \ nConnection: Close " ) ; 
    mg_send (NC, Content, strlen (Content)); 
    NC -> the flags | = MG_F_SEND_AND_CLOSE; 
} 

// send the file, the file location is relative to the path of s_http_server_opts.document_root 
void the HttpService :: mgSendFile ( struct mg_connection NC *, struct * HM http_message, const  char * filePath) {
    mg_http_serve_file(nc, hm, filePath, mg_mk_str("text/plain"), mg_mk_str(""));
}

//初始化并启动
bool HttpService::start(const char *port) {
    struct mg_mgr mgr;
    struct mg_connection *nc;

    mg_mgr_init(&mgr, NULL);
    printf("Starting web server on port %s\n", port);
    nc = mg_bind(&mgr, port, mgEvHandler);
    if (nc == NULL) {
        printf("Failed to create listener\n");
        return false;
    }

    // Set up HTTP server parameters
    mg_set_protocol_http_websocket(nc);
    s_http_server_opts.document_root = ".";  //文件相对路径 Serve current directory
    s_http_server_opts.enable_directory_listing = "yes";

    for (;;) {
        mg_mgr_poll(&mgr, 1000); //1s轮训一次
    }
    mg_mgr_free(&mgr);

    return true;
}

 

3.vs2019 project file to download: vs2019_HttpSvr.zip

 

the above.

 

Reproduced in: https: //www.cnblogs.com/chevin/p/11051867.html