80 lines
2.0 KiB
C
80 lines
2.0 KiB
C
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdint.h>
|
|
|
|
#include <uv.h>
|
|
|
|
static int connection_count = 0;
|
|
|
|
static uv_buf_t alloc_buffer(uv_handle_t *handle, size_t suggested_size) {
|
|
return uv_buf_init(calloc(1, suggested_size), suggested_size);
|
|
}
|
|
|
|
static void on_write_complete(uv_write_t *req, int status) {
|
|
/* we could check status here, but we don't care; just free, and be done */
|
|
free(req->data);
|
|
free(req);
|
|
}
|
|
|
|
static void on_input(uv_stream_t *conn, ssize_t nread, uv_buf_t buf) {
|
|
if (nread == -1) {
|
|
/* here we could check uv_last_error(conn->loop).code to see whether it's UV_EOF or not */
|
|
/* but we don't care; just close, and be done */
|
|
connection_count--;
|
|
if (connection_count == 0) {
|
|
uv_stop(conn->loop);
|
|
}
|
|
uv_close((uv_handle_t *) conn, NULL);
|
|
} else {
|
|
uv_write_t *req = calloc(1, sizeof(uv_write_t));
|
|
/* we just echo what came in. */
|
|
req->data = buf.base;
|
|
buf.len = nread;
|
|
uv_write(req, conn, &buf, 1, on_write_complete);
|
|
}
|
|
}
|
|
|
|
static void on_connection(uv_stream_t *serversock, int status) {
|
|
uv_tcp_t *conn;
|
|
|
|
if (status == -1) {
|
|
/* error? */
|
|
return;
|
|
}
|
|
|
|
conn = calloc(1, sizeof(uv_tcp_t));
|
|
uv_tcp_init(serversock->loop, conn);
|
|
if (uv_accept(serversock, (uv_stream_t *) conn) == 0) {
|
|
connection_count++;
|
|
uv_read_start((uv_stream_t *) conn, alloc_buffer, on_input);
|
|
} else {
|
|
uv_close((uv_handle_t *) conn, NULL);
|
|
}
|
|
}
|
|
|
|
static int const PORTNUMBER = 5999;
|
|
|
|
int main(int argc, char const *argv[]) {
|
|
uv_loop_t *uv = uv_default_loop();
|
|
uv_tcp_t serversock;
|
|
struct sockaddr_in bind_addr;
|
|
|
|
printf("uvserver; libuv version %s\n", uv_version_string());
|
|
|
|
if (argc > 1) {
|
|
return 0;
|
|
}
|
|
|
|
printf("Accepting connections on port %d.\n", PORTNUMBER);
|
|
uv_tcp_init(uv, &serversock);
|
|
bind_addr = uv_ip4_addr("0.0.0.0", PORTNUMBER);
|
|
uv_tcp_bind(&serversock, bind_addr);
|
|
uv_listen((uv_stream_t *) &serversock, 4, on_connection);
|
|
|
|
uv_run(uv, UV_RUN_DEFAULT);
|
|
|
|
uv_loop_delete(uv);
|
|
return 0;
|
|
}
|