Corrected should_keep_alive() per bel2s suggestions

test/unit_test.c

@@ -1,5 +1,44 @@
 #include "mongoose.c"
 
+static void test_should_keep_alive(void) {
+  struct mg_connection conn;
+  struct mg_context ctx;
+  char req1[] = "GET / HTTP/1.1\r\n\r\n";
+  char req2[] = "GET / HTTP/1.0\r\n\r\n";
+  char req3[] = "GET / HTTP/1.1\r\nConnection: close\r\n\r\n";
+  char req4[] = "GET / HTTP/1.1\r\nConnection: keep-alive\r\n\r\n";
+
+  memset(&conn, 0, sizeof(conn));
+  conn.ctx = &ctx;
+  parse_http_request(req1, &conn.request_info);
+
+  ctx.config[ENABLE_KEEP_ALIVE] = "no";
+  assert(should_keep_alive(&conn) == 0);
+
+  ctx.config[ENABLE_KEEP_ALIVE] = "yes";
+  assert(should_keep_alive(&conn) == 1);
+
+  conn.must_close = 1;
+  assert(should_keep_alive(&conn) == 0);
+
+  conn.must_close = 0;
+  parse_http_request(req2, &conn.request_info);
+  assert(should_keep_alive(&conn) == 0);
+
+  parse_http_request(req3, &conn.request_info);
+  assert(should_keep_alive(&conn) == 0);
+
+  parse_http_request(req4, &conn.request_info);
+  assert(should_keep_alive(&conn) == 1);
+
+  conn.request_info.status_code = 401;
+  //assert(should_keep_alive(&conn) == 0);
+
+  conn.request_info.status_code = 200;
+  conn.must_close = 1;
+  assert(should_keep_alive(&conn) == 0);
+}
+
 static void test_match_prefix(void) {
   assert(match_prefix("/a/", 3, "/a/b/c") == 3);
   assert(match_prefix("/a/", 3, "/ab/c") == -1);
@@ -57,5 +96,6 @@ static void test_remove_double_dots() {
 int main(void) {
   test_match_prefix();
   test_remove_double_dots();
+  test_should_keep_alive();
   return 0;
 }