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v/vlib/picoev/picoev.v
2020-01-23 21:04:46 +01:00

235 lines
4.9 KiB
V

// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
module picoev
import picohttpparser
#include <errno.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <fcntl.h>
#include <signal.h>
#flag -I @VROOT/thirdparty/picoev
#flag -L @VROOT/thirdparty/picoev
#flag @VROOT/thirdparty/picoev/picoev.o
#include "src/picoev.h"
const (
MAX_FDS = 1024
TIMEOUT_SECS = 8
MAX_TIMEOUT = 10
MAX_READ = 4096
MAX_WRITE = 8192
)
struct C.in_addr {
mut:
s_addr int
}
struct C.sockaddr_in {
mut:
sin_family int
sin_port int
sin_addr C.in_addr
}
struct C.sockaddr_storage {}
fn C.socket() int
fn C.setsockopt() int
fn C.htonl() int
fn C.htons() int
fn C.bind() int
fn C.listen() int
fn C.accept() int
fn C.getaddrinfo() int
fn C.connect() int
fn C.send() int
fn C.recv() int
fn C.read() int
fn C.shutdown() int
fn C.close() int
fn C.ntohs() int
fn C.getsockname() int
fn C.fcntl() int
fn C.write() int
struct C.picoev_loop {}
struct Picoev {
loop *C.picoev_loop
cb fn(req picohttpparser.Request, res mut picohttpparser.Response)
mut:
date byteptr
buf byteptr
idx [1024]int
out byteptr
oidx [1024]int
}
fn picoev_del(*C.picoev_loop, int) int
fn picoev_set_timeout(*C.picoev_loop, int, int)
fn picoev_add(*C.picoev_loop, int, int, int, *C.picoev_handler, voidptr) int
fn picoev_init(int) int
fn picoev_create_loop(int) *C.picoev_loop
fn picoev_loop_once(*C.picoev_loop, int) int
fn picoev_destroy_loop(*C.picoev_loop) int
fn picoev_deinit() int
[inline]
fn setup_sock(fd int) {
on := 1
if C.setsockopt(fd, C.IPPROTO_TCP, C.TCP_NODELAY, &on, sizeof(int)) < 0 {
println('setup_sock.setup_sock failed')
}
if C.fcntl(fd, C.F_SETFL, C.O_NONBLOCK) != 0 {
println('fcntl failed')
}
}
[inline]
fn close_conn(loop *C.picoev_loop, fd int) {
C.picoev_del(loop, fd)
C.close(fd)
}
[inline]
fn myread(fd int, b byteptr, max_len, idx int) int {
return C.read(fd, b + idx, max_len - idx)
}
[inline]
fn mysubstr(s byteptr, from, len int) string {
return tos(s + from, len)
}
fn rw_callback(loop *C.picoev_loop, fd, events int, cb_arg voidptr) {
mut p := *Picoev(cb_arg)
if (events & C.PICOEV_TIMEOUT) != 0 {
close_conn(loop, fd)
p.idx[fd] = 0
return
}
else if (events & C.PICOEV_READ) != 0 {
C.picoev_set_timeout(loop, fd, TIMEOUT_SECS)
buf := (p.buf + fd * MAX_READ)
idx := p.idx[fd]
mut r := myread(fd, buf, MAX_READ, idx)
if (r == 0) {
close_conn(loop, fd)
p.idx[fd] = 0
return
} else if (r == -1) {
if errno == C.EAGAIN || errno == C.EWOULDBLOCK {
//
} else {
close_conn(loop, fd)
p.idx[fd] = 0
return
}
} else {
r += idx
mut s := tos(buf, r)
out := (p.out + fd * MAX_WRITE)
mut res := picohttpparser.Response{
fd: fd
date: p.date
buf_start: out
buf: out + p.oidx[fd]
}
mut req := picohttpparser.Request{}
for {
pret := req.parse_request_path_pipeline(s)
if pret <= 0 && s.len > 0 {
C.memmove(buf, s.str, s.len)
p.idx[fd] = s.len
p.oidx[fd] = int(res.buf - res.buf_start)
break
}
p.cb(req, mut res)
if pret >= s.len {
p.idx[fd] = 0
p.oidx[fd] = 0
if res.end() < 0 {
close_conn(loop, fd)
return
}
break
}
s = mysubstr(buf, pret, s.len - pret)
}
}
}
}
fn accept_callback(loop *C.picoev_loop, fd, events int, cb_arg voidptr) {
newfd := C.accept(fd, 0, 0)
if newfd != -1 {
setup_sock(newfd)
C.picoev_add(loop, newfd, C.PICOEV_READ, TIMEOUT_SECS, rw_callback, cb_arg)
}
}
pub fn new(port int, cb voidptr) &Picoev {
fd := C.socket(C.AF_INET, C.SOCK_STREAM, 0)
assert fd != -1
flag := 1
assert C.setsockopt(fd, C.SOL_SOCKET, C.SO_REUSEADDR, &flag, sizeof(int)) == 0
assert C.setsockopt(fd, C.SOL_SOCKET, C.SO_REUSEPORT, &flag, sizeof(int)) == 0
$if linux {
assert C.setsockopt(fd, C.IPPROTO_TCP, C.TCP_QUICKACK, &flag, sizeof(int)) == 0
timeout := 10
assert C.setsockopt(fd, C.IPPROTO_TCP, C.TCP_DEFER_ACCEPT, &timeout, sizeof(int)) == 0
queue_len := 4096
assert C.setsockopt(fd, C.IPPROTO_TCP, C.TCP_FASTOPEN, &queue_len, sizeof(int)) == 0
}
mut addr := C.sockaddr_in{}
addr.sin_family = C.AF_INET
addr.sin_port = C.htons(port)
addr.sin_addr.s_addr = C.htonl(C.INADDR_ANY)
size := 16 // sizeof(C.sockaddr_in)
bind_res := C.bind(fd, &addr, size)
assert bind_res == 0
listen_res := C.listen(fd, C.SOMAXCONN)
assert listen_res == 0
setup_sock(fd)
C.picoev_init(MAX_FDS)
loop := C.picoev_create_loop(MAX_TIMEOUT)
pv := &Picoev{
loop: loop
cb: cb
date: C.get_date()
buf: malloc(MAX_FDS * MAX_READ + 1)
out: malloc(MAX_FDS * MAX_WRITE + 1)
}
C.picoev_add(loop, fd, C.PICOEV_READ, 0, accept_callback, pv)
go update_date(pv)
return pv
}
pub fn (p Picoev) serve() {
for {
C.picoev_loop_once(p.loop, 1)
}
}
fn update_date(p mut Picoev) {
for {
p.date = C.get_date()
C.usleep(1000000)
}
}