proxy/handler: reorganize program startup a little bit

src/bin/pushpin-handler.rs

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2023 Fastly, Inc.
+ * Copyright (C) 2023-2025 Fastly, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,20 +15,20 @@
  */
 
 use clap::Parser;
-use pushpin::handler::handlercliargs::ffi::HandlerCliArgs;
-use pushpin::handler::handlercliargs::{destroy_handler_cli_args, CliArgs};
+use pushpin::handler::cliargs::ffi::HandlerCliArgs;
+use pushpin::handler::cliargs::{destroy_handler_cli_args, CliArgs};
 use pushpin::import_cpp;
 use std::process::ExitCode;
 
 import_cpp! {
-    fn handler_main(args: *const HandlerCliArgs) -> libc::c_int;
+    fn handler_init(args: *const HandlerCliArgs) -> libc::c_int;
 }
 
 fn main() -> ExitCode {
     let cli_args = CliArgs::parse().verify();
     let cli_args_ffi = cli_args.to_ffi();
 
-    let exit_code = unsafe { handler_main(&cli_args_ffi) };
+    let exit_code = unsafe { handler_init(&cli_args_ffi) };
 
     // Clean up the allocated memory
     unsafe { destroy_handler_cli_args(cli_args_ffi) };

src/bin/pushpin-proxy.rs

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2023 Fastly, Inc.
+ * Copyright (C) 2023-2025 Fastly, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,19 +16,19 @@
 
 use clap::Parser;
 use pushpin::import_cpp;
-use pushpin::proxy::proxycliargs::ffi::ProxyCliArgs;
-use pushpin::proxy::proxycliargs::{destroy_proxy_cli_args, CliArgs};
+use pushpin::proxy::cliargs::ffi::ProxyCliArgs;
+use pushpin::proxy::cliargs::{destroy_proxy_cli_args, CliArgs};
 use std::process::ExitCode;
 
 import_cpp! {
-    fn proxy_main(args: *const ProxyCliArgs) -> libc::c_int;
+    fn proxy_init(args: *const ProxyCliArgs) -> libc::c_int;
 }
 
 fn main() -> ExitCode {
     let cli_args = CliArgs::parse().verify();
     let cli_args_ffi = cli_args.to_ffi();
 
-    let exit_code = unsafe { proxy_main(&cli_args_ffi) };
+    let exit_code = unsafe { proxy_init(&cli_args_ffi) };
 
     // Clean up the allocated memory
     unsafe { destroy_proxy_cli_args(cli_args_ffi) };

src/handler/handler.pri

@@ -27,9 +27,7 @@ HEADERS += \
 	$$PWD/filter.h \
 	$$PWD/filterstack.h \
 	$$PWD/handlerengine.h \
-	$$PWD/handlerapp.h \
-	$$PWD/main.h \
-	$$PWD/handlerargsdata.h 
+	$$PWD/handlerargsdata.h
 
 SOURCES += \
 	$$PWD/deferred.cpp \
@@ -56,6 +54,5 @@ SOURCES += \
 	$$PWD/filter.cpp \
 	$$PWD/filterstack.cpp \
 	$$PWD/handlerengine.cpp \
-	$$PWD/handlerapp.cpp \
-	$$PWD/handlermain.cpp \
-	$$PWD/handlerargsdata.cpp 
+	$$PWD/handlerargsdata.cpp \
+	$$PWD/handlerapp.cpp

src/handler/handlerapp.cpp

@@ -21,17 +21,15 @@
  * $FANOUT_END_LICENSE$
  */
 
-#include "handlerapp.h"
-#include "handlerargsdata.h"
-#include "rust/bindings.h"
-
 #include <assert.h>
+#include <iostream>
 #include <QCoreApplication>
 #include <QCommandLineParser>
 #include <QStringList>
 #include <QFile>
 #include <QFileInfo>
 #include <QDir>
+#include "rust/bindings.h"
 #include "timer.h"
 #include "defercall.h"
 #include "eventloop.h"
@@ -42,9 +40,9 @@
 #include "wssession.h"
 #include "httpsessionupdatemanager.h"
 #include "settings.h"
-#include "handlerengine.h"
 #include "config.h"
-#include <iostream>
+#include "handlerengine.h"
+#include "handlerargsdata.h"
 
 #define DEFAULT_HTTP_MAX_HEADERS_SIZE 10000
 #define DEFAULT_HTTP_MAX_BODY_SIZE 1000000
@@ -85,6 +83,18 @@ static QString firstSpec(const QString &s, int peerCount)
 	return s;
 }
 
+class HandlerApp
+{
+public:
+	HandlerApp();
+	~HandlerApp();
+
+	int run(const ffi::HandlerCliArgs *argsFfi);
+
+private:
+	class Private;
+};
+
 class HandlerApp::Private
 {
 public:
@@ -379,4 +389,21 @@ HandlerApp::~HandlerApp() = default;
 int HandlerApp::run(const ffi::HandlerCliArgs *argsFfi)
 {
 	return Private::run(argsFfi);
-}
+}
+
+extern "C" {
+
+int handler_init(const ffi::HandlerCliArgs *argsFfi)
+{
+	// Create dummy argc/argv for QCoreApplication
+	int argc = 1;
+	char app_name[] = "pushpin-handler";
+	char* argv[] = { app_name, nullptr };
+
+	QCoreApplication qapp(argc, argv);
+
+	HandlerApp app;
+	return app.run(argsFfi);
+}
+
+}

src/handler/mod.rs

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-pub mod handlercliargs;
+pub mod cliargs;
 
 #[cfg(test)]
 mod tests {

src/proxy/mod.rs

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-pub mod proxycliargs;
+pub mod cliargs;
 
 #[cfg(test)]
 mod tests {

src/proxy/proxy.pri

@@ -19,10 +19,8 @@ HEADERS += \
 	$$PWD/proxyutil.h \
 	$$PWD/proxysession.h \
 	$$PWD/wsproxysession.h \
-	$$PWD/engine.h \
-	$$PWD/app.h \
-	$$PWD/main.h \ 
-	$$PWD/proxyargsdata.h 
+	$$PWD/proxyengine.h \
+	$$PWD/proxyargsdata.h
 
 SOURCES += \
 	$$PWD/testhttprequest.cpp \
@@ -43,7 +41,6 @@ SOURCES += \
 	$$PWD/proxyutil.cpp \
 	$$PWD/proxysession.cpp \
 	$$PWD/wsproxysession.cpp \
-	$$PWD/engine.cpp \
-	$$PWD/app.cpp \
-	$$PWD/main.cpp \ 
-	$$PWD/proxyargsdata.cpp 
+	$$PWD/proxyengine.cpp \
+	$$PWD/proxyargsdata.cpp \
+	$$PWD/proxyapp.cpp