refactor: fold single-function modules into their callers

config.m4

@@ -507,7 +507,6 @@ if test "$PHP_HTTP_SERVER" != "no"; then
     deps/llhttp/api.c
     deps/llhttp/http.c
     src/http_server.c
-    src/http_server_exceptions.c
     src/http_server_config.c
     src/http_server_class.c
     src/core/http_connection.c
@@ -538,9 +537,7 @@ if test "$PHP_HTTP_SERVER" != "no"; then
     src/http_mime.c
     src/http_date.c
     src/http_etag.c
-    src/http_conditional.c
     src/http_range.c
-    src/fs_util.c
     src/http_rfc5987.c
     src/http_precompressed.c
     src/http_param_parse.c

config.w32

@@ -15,7 +15,6 @@ if (PHP_TRUE_ASYNC_SERVER == "yes") {
     // it under build-dir\src\, producing LNK1181.
     var http_server_sources =
         "src\\http_server.c " +
-        "src\\http_server_exceptions.c " +
         "src\\http_server_config.c " +
         "src\\http_server_class.c " +
         "src\\http_request.c " +
@@ -29,9 +28,7 @@ if (PHP_TRUE_ASYNC_SERVER == "yes") {
         "src\\http_mime.c " +
         "src\\http_date.c " +
         "src\\http_etag.c " +
-        "src\\http_conditional.c " +
         "src\\http_range.c " +
-        "src\\fs_util.c " +
         "src\\http_rfc5987.c " +
         "src\\http_precompressed.c " +
         "src\\http_param_parse.c " +

include/send_file.h

@@ -27,6 +27,7 @@
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
+#include <time.h>
 
 #include "static/http_static_cache.h" /* http_static_cache_view_t */
 
@@ -148,6 +149,19 @@ send_file_result_t send_file(struct http_request_t *request, zend_object *respon
 							 const send_file_config_t *config, const send_file_cbs_t *cbs,
 							 void *user);
 
+/* Read exactly `expected_size` bytes from `fd` into a freshly-allocated
+ * zend_string. Retries EINTR. Returns NULL on any IO error or on
+ * premature EOF. Used by the small-file slurp fast-paths. */
+zend_string *fs_slurp_fd(int fd, size_t expected_size);
+
+/* Returns true when the request's conditional-GET headers match the
+ * resource state and the server SHOULD answer 304. The etag value,
+ * when supplied, must be the canonical W/"..." form produced by
+ * http_etag_format_strong. last_modified is in seconds. */
+bool http_conditional_check(const char *if_none_match, size_t if_none_match_len,
+							const char *if_modified_since, size_t if_modified_since_len,
+							const char *etag, size_t etag_len, time_t last_modified);
+
 /* File-size threshold below which the static-handler's slurp fast-path
  * is strictly cheaper than the async engine. See http_static_try_serve
  * routing and the matching slurp branch inside the send_file engine. */

src/http_server.c

@@ -12,6 +12,7 @@
 
 #include "php.h"
 #include "php_ini.h"
+#include "zend_exceptions.h"
 #include "ext/standard/info.h"
 #include "zend_smart_str.h"
 #include "php_http_server.h"
@@ -43,10 +44,37 @@
 
 /* Include generated arginfo */
 #include "../stubs/functions.php_arginfo.h"
+#include "../stubs/HttpServerExceptions.php_arginfo.h"
 
 /* Declare module globals */
 ZEND_DECLARE_MODULE_GLOBALS(http_server)
 
+/* Exception class entries */
+zend_class_entry *http_server_exception_ce;
+zend_class_entry *http_server_runtime_exception_ce;
+zend_class_entry *http_server_invalid_argument_exception_ce;
+zend_class_entry *http_server_connection_exception_ce;
+zend_class_entry *http_server_protocol_exception_ce;
+zend_class_entry *http_server_timeout_exception_ce;
+zend_class_entry *http_exception_ce;
+
+void http_server_exceptions_register(void)
+{
+	http_server_exception_ce = register_class_TrueAsync_HttpServerException();
+
+	http_server_runtime_exception_ce = register_class_TrueAsync_HttpServerRuntimeException(http_server_exception_ce);
+	http_server_invalid_argument_exception_ce = register_class_TrueAsync_HttpServerInvalidArgumentException(http_server_exception_ce);
+	http_server_connection_exception_ce = register_class_TrueAsync_HttpServerConnectionException(http_server_exception_ce);
+	http_server_protocol_exception_ce = register_class_TrueAsync_HttpServerProtocolException(http_server_exception_ce);
+	http_server_timeout_exception_ce = register_class_TrueAsync_HttpServerTimeoutException(http_server_exception_ce);
+
+	/* HttpException — separate hierarchy. Extends Async\AsyncCancellation
+	 * (resolved at registration time inside the arginfo helper). User
+	 * handlers throw it to set a precise HTTP error response; we also
+	 * use it internally for cancelling in-flight handlers on parser errors. */
+	http_exception_ce = register_class_TrueAsync_HttpException();
+}
+
 extern zval* http_request_create_from_parsed(http_request_t *req);
 
 /* PHP Functions */