bogart.c

#include <event.h>
#include <evhttp.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/time.h>

typedef struct {
    const char * uri;
    struct evhttp_request * ev_req;
} Request;

typedef struct {
    int code;
    char * body;
    size_t body_len;
} Response;

#define Bogart \
    Response bogart_dispatch(Request * req)

#define Get(path) \
    if(strcmp(path, req->uri) == 0)

#define respond(code, body) \
    return (Response) { code, body, strlen(body) }




Bogart {
    Get("/hello") {
        respond(200, "Goodbye World!");
    }

    Get("/") {
        respond(200, "Hello World!");
    }
}




void request_handler(struct evhttp_request * req, void * nothing) {
    struct timeval t0, t1, tr;

    gettimeofday(&t0, NULL);

    struct evbuffer * buffer = evbuffer_new();

    const char * uri = evhttp_request_get_uri(req);
    
    Request * request = (Request *) malloc(sizeof(Request));
    request->ev_req = req;
    request->uri = uri;

    Response response = bogart_dispatch(request);

    evbuffer_add(buffer, response.body, response.body_len);
    evhttp_send_reply(req, response.code, "OK", buffer);
    evbuffer_free(buffer);

    gettimeofday(&t1, NULL);
    
    timersub(&t1, &t0, &tr);

    printf("Request processed in: %u secs, %u usecs\n", tr.tv_sec, tr.tv_usec);
}

int main() {
    struct event_base * base = event_init();
    struct evhttp * http = evhttp_new(base);
    evhttp_bind_socket(http, "127.0.0.1", 11000);
    evhttp_set_gencb(http, request_handler, NULL);
    
    event_loop(0);

    evhttp_free(http);
    return 0;
}