88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <uv.h>
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#define DEFAULT_PORT 7000
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#define DEFAULT_BACKLOG 128
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uv_loop_t *loop;
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struct sockaddr_in addr;
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typedef struct {
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uv_write_t req;
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uv_buf_t buf;
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} write_req_t;
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void free_write_req(uv_write_t *req) {
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write_req_t *wr = (write_req_t*) req;
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free(wr->buf.base);
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free(wr);
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}
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void alloc_buffer(uv_handle_t *handle, size_t suggested_size, uv_buf_t *buf) {
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buf->base = (char*) malloc(suggested_size);
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buf->len = suggested_size;
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}
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void on_close(uv_handle_t* handle) {
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free(handle);
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}
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void echo_write(uv_write_t *req, int status) {
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if (status) {
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fprintf(stderr, "Write error %s\n", uv_strerror(status));
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}
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free_write_req(req);
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}
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void echo_read(uv_stream_t *client, ssize_t nread, const uv_buf_t *buf) {
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if (nread > 0) {
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write_req_t *req = (write_req_t*) malloc(sizeof(write_req_t));
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req->buf = uv_buf_init(buf->base, nread);
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uv_write((uv_write_t*) req, client, &req->buf, 1, echo_write);
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return;
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}
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if (nread < 0) {
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if (nread != UV_EOF)
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fprintf(stderr, "Read error %s\n", uv_err_name(nread));
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uv_close((uv_handle_t*) client, on_close);
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}
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free(buf->base);
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}
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void on_new_connection(uv_stream_t *server, int status) {
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if (status < 0) {
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fprintf(stderr, "New connection error %s\n", uv_strerror(status));
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// error!
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return;
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}
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uv_tcp_t *client = (uv_tcp_t*) malloc(sizeof(uv_tcp_t));
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uv_tcp_init(loop, client);
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if (uv_accept(server, (uv_stream_t*) client) == 0) {
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uv_read_start((uv_stream_t*) client, alloc_buffer, echo_read);
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}
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else {
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uv_close((uv_handle_t*) client, on_close);
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}
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}
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int main() {
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loop = uv_default_loop();
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uv_tcp_t server;
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uv_tcp_init(loop, &server);
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uv_ip4_addr("0.0.0.0", DEFAULT_PORT, &addr);
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uv_tcp_bind(&server, (const struct sockaddr*)&addr, 0);
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int r = uv_listen((uv_stream_t*) &server, DEFAULT_BACKLOG, on_new_connection);
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if (r) {
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fprintf(stderr, "Listen error %s\n", uv_strerror(r));
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return 1;
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}
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return uv_run(loop, UV_RUN_DEFAULT);
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}
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