main.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <uv.h>

Go to the source code of this file.

Classes
struct	write_req_t

Macros
#define	DEFAULT_PORT   7000
#define	DEFAULT_BACKLOG   128

Functions
void	free_write_req (uv_write_t *req)
void	alloc_buffer (uv_handle_t *handle, size_t suggested_size, uv_buf_t *buf)
void	on_close (uv_handle_t *handle)
void	echo_write (uv_write_t *req, int status)
void	echo_read (uv_stream_t *client, ssize_t nread, const uv_buf_t *buf)
void	on_new_connection (uv_stream_t *server, int status)
int	main ()

Variables
uv_loop_t *	loop
struct sockaddr_in	addr

Macro Definition Documentation

DEFAULT_BACKLOG

#define DEFAULT_BACKLOG   128

Definition at line 7 of file main.c.

DEFAULT_PORT

#define DEFAULT_PORT   7000

Definition at line 6 of file main.c.

Function Documentation

alloc_buffer()

void alloc_buffer	(	uv_handle_t *	handle,
		size_t	suggested_size,
		uv_buf_t *	buf
	)

Definition at line 23 of file main.c.

                                                                             {
    buf->base = (char*) malloc(suggested_size);
    buf->len = suggested_size;
}

References malloc().

echo_read()

void echo_read	(	uv_stream_t *	client,
		ssize_t	nread,
		const uv_buf_t *	buf
	)

Definition at line 39 of file main.c.

                                                                        {
    if (nread > 0) {
        write_req_t *req = (write_req_t*) malloc(sizeof(write_req_t));
        req->buf = uv_buf_init(buf->base, nread);
        uv_write((uv_write_t*) req, client, &req->buf, 1, echo_write);
        return;
    }
    if (nread < 0) {
        if (nread != UV_EOF)
            fprintf(stderr, "Read error %s\n", uv_err_name(nread));
        uv_close((uv_handle_t*) client, on_close);
    }
 
    free(buf->base);
}

References echo_write(), free(), malloc(), on_close(), req, uv_buf_init(), uv_close(), uv_err_name(), and uv_write().

echo_write()

void echo_write	(	uv_write_t *	req,
		int	status
	)

Definition at line 32 of file main.c.

                                             {
    if (status) {
        fprintf(stderr, "Write error %s\n", uv_strerror(status));
    }
    free_write_req(req);
}

References free_write_req(), req, status, and uv_strerror().

free_write_req()

void free_write_req

(

uv_write_t *

req

)

Definition at line 17 of file main.c.

                                     {
    write_req_t *wr = (write_req_t*) req;
    free(wr->buf.base);
    free(wr);
}

References uv_buf_t::base, write_req_t::buf, free(), and req.

main()

int main

(

void

)

Definition at line 72 of file main.c.

           {
    loop = uv_default_loop();
 
    uv_tcp_t server;
    uv_tcp_init(loop, &server);
 
    uv_ip4_addr("0.0.0.0", DEFAULT_PORT, &addr);
 
    uv_tcp_bind(&server, (const struct sockaddr*)&addr, 0);
    int r = uv_listen((uv_stream_t*) &server, DEFAULT_BACKLOG, on_new_connection);
    if (r) {
        fprintf(stderr, "Listen error %s\n", uv_strerror(r));
        return 1;
    }
    return uv_run(loop, UV_RUN_DEFAULT);
}

References addr, DEFAULT_BACKLOG, DEFAULT_PORT, loop, on_new_connection(), r, uv_default_loop(), uv_ip4_addr(), uv_listen(), uv_run(), UV_RUN_DEFAULT, uv_strerror(), uv_tcp_bind(), and uv_tcp_init().

on_close()

void on_close

(

uv_handle_t *

handle

)

Definition at line 28 of file main.c.

                                   {
    free(handle);
}

References free(), and handle.

Referenced by echo_read(), and on_new_connection().

on_new_connection()

void on_new_connection	(	uv_stream_t *	server,
		int	status
	)

Definition at line 55 of file main.c.

                                                        {
    if (status < 0) {
        fprintf(stderr, "New connection error %s\n", uv_strerror(status));
        // error!
        return;
    }
 
    uv_tcp_t *client = (uv_tcp_t*) malloc(sizeof(uv_tcp_t));
    uv_tcp_init(loop, client);
    if (uv_accept(server, (uv_stream_t*) client) == 0) {
        uv_read_start((uv_stream_t*) client, alloc_buffer, echo_read);
    }
    else {
        uv_close((uv_handle_t*) client, on_close);
    }
}

References alloc_buffer(), echo_read(), loop, malloc(), on_close(), status, uv_accept(), uv_close(), uv_read_start(), uv_strerror(), and uv_tcp_init().

Variable Documentation

addr

struct sockaddr_in addr

Definition at line 9 of file main.c.

Referenced by main(), on_read(), and on_resolved().

loop

uv_loop_t* loop

Definition at line 9 of file main.c.