From 5a4d4508a70bd8c1f494d0a15073e71313038c1e Mon Sep 17 00:00:00 2001
From:  <fanghr@fanghr.localdomain>
Date: Mon, 2 Oct 2017 19:38:45 +0800
Subject: [PATCH] server

---
 nefdaemon/server.cpp | 117 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 nefdaemon/server.cpp

diff --git a/nefdaemon/server.cpp b/nefdaemon/server.cpp
new file mode 100644
index 0000000..d236f37
--- /dev/null
+++ b/nefdaemon/server.cpp
@@ -0,0 +1,117 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <uv.h>
+
+#define DEFAULT_PORT 7000
+#define DEFAULT_BACKLOG 128
+
+uv_loop_t *loop;
+struct sockaddr_in addr;
+
+typedef struct {
+	uv_write_t req;
+	uv_buf_t buf;
+} write_req_t;
+
+void daemonize(void)
+{
+	//下面用于屏蔽一些有关控制终端操作的信号
+
+	//防止守护进程没有正常运作之前控制终端受到干扰退出或挂起
+#ifdef SIGTTOU
+	signal(SIGTTOU, SIG_IGN); //屏蔽后台进程写控制终端信号
+#endif
+#ifdef SIGTTIN
+	signal(SIGTTIN, SIG_IGN); //屏蔽后台读控制终端信号
+#endif
+#ifdef SIGTSTP
+	signal(SIGTSTP, SIG_IGN); //忽略终端挂起
+#endif
+	if (fork() != 0)
+		exit(0); //fork()产生子进程被init进程收养，父进程退出，进程变成daemon
+	if (setsid() < 0)
+		exit(0); //setsid()创建新会话，并成为首进程
+	signal(SIGHUP, SIG_IGN);
+	if (fork() != 0)
+		exit(0); //再fork()一次防鬼畜
+	if (chdir("/home/fanghr") != 0)
+		exit(0); //切换工作目录
+}
+
+void free_write_req(uv_write_t *req) {
+	write_req_t *wr = (write_req_t*)req;
+	free(wr->buf.base);
+	free(wr);
+}
+
+void alloc_buffer(uv_handle_t *handle, size_t suggested_size, uv_buf_t *buf) {
+	buf->base = (char*)malloc(suggested_size);
+	buf->len = suggested_size;
+}
+
+void on_close(uv_handle_t* handle) {
+	free(handle);
+}
+
+void echo_write(uv_write_t *req, int status) {
+	if (status) {
+		fprintf(stderr, "Write error %s\n", uv_strerror(status));
+	}
+	free_write_req(req);
+}
+
+void echo_read(uv_stream_t *client, ssize_t nread, const uv_buf_t *buf) {
+	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);
+}
+
+void on_new_connection(uv_stream_t *server, int status) {
+	if (status < 0) {
+		fprintf(stderr, "New connection error %s\n", uv_strerror(status));
+		// error!
+		return;
+	}
+	FILE* fp = fopen("/tmp/test.log", "a");
+	fprintf(fp, "%s\n", "newconnection");
+	fclose(fp);
+	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);
+	}
+}
+
+int main() {
+	daemonize();
+	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);
+}
+
-- 
Gitee