From a181a3b263af88346886373ae83f31be8f2dd04c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=BA=90=E6=96=87=E9=9B=A8?=
 <41315874+fumiama@users.noreply.github.com>
Date: Mon, 7 Jun 2021 15:51:13 +0800
Subject: [PATCH] =?UTF-8?q?cat=E6=94=B9=E7=94=A8sendfile?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 server.c | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/server.c b/server.c
index 70ae616..6f17115 100644
--- a/server.c
+++ b/server.c
@@ -20,6 +20,10 @@
 #include <stdlib.h>
 #include <pthread.h>
 
+#if !__APPLE__
+    #include <sys/sendfile.h> 
+#endif
+
 #define ISspace(x) isspace((int)(x))
 
 #define SERVER_STRING "Server: tinyhttpd edited by fumiama/0.1.0\r\n"
@@ -150,11 +154,18 @@ void bad_request(int client) {
  * Parameters: the client socket descriptor
  *             FILE pointer for the file to cat */
 /**********************************************************************/
+struct sf_hdtr hdtr;
 void cat(int client, FILE *resource) {
-    char buf[1024];
-    size_t size = 0;
-
-    while ((size = fread(buf, sizeof(char), 1024, resource))) send(client, buf, size, 0);
+    fseek(resource, 0, SEEK_END);
+    off_t len = 0;
+    #if __APPLE__
+        sendfile(fileno(resource), client, 0, &len, &hdtr, 0);
+    #else
+        off_t file_size = ftell(resource);
+        rewind(resource);
+        sendfile(client, fileno(resource), &len, file_size);
+    #endif
+    printf("Send %u bytes.\n", len);
 }
 
 /**********************************************************************/
@@ -412,10 +423,8 @@ void serve_file(int client, const char *filename) {
         numchars = get_line(client, buf, sizeof(buf));
 
     resource = fopen(filename, "rb");
-    if (resource == NULL)
-        not_found(client);
-    else
-    {
+    if (resource == NULL) not_found(client);
+    else {
         headers(client, filename);
         cat(client, resource);
     }