From 98c8eca70c5b5a48de4e55b3ed864c93f6c831c4 Mon Sep 17 00:00:00 2001
From: Sam Atkins <atkinssj@serenityos.org>
Date: Sat, 25 Dec 2021 14:31:45 +0000
Subject: [PATCH] EchoServer: Port to LibMain

---
 Userland/Services/EchoServer/CMakeLists.txt |  2 +-
 Userland/Services/EchoServer/main.cpp       | 20 ++++++--------------
 2 files changed, 7 insertions(+), 15 deletions(-)

diff --git a/Userland/Services/EchoServer/CMakeLists.txt b/Userland/Services/EchoServer/CMakeLists.txt
index 498be2d59f..4c02e9d1b0 100644
--- a/Userland/Services/EchoServer/CMakeLists.txt
+++ b/Userland/Services/EchoServer/CMakeLists.txt
@@ -9,4 +9,4 @@ set(SOURCES
 )
 
 serenity_bin(EchoServer)
-target_link_libraries(EchoServer LibCore)
+target_link_libraries(EchoServer LibCore LibMain)
diff --git a/Userland/Services/EchoServer/main.cpp b/Userland/Services/EchoServer/main.cpp
index 5bd35adf59..5a7db00aa5 100644
--- a/Userland/Services/EchoServer/main.cpp
+++ b/Userland/Services/EchoServer/main.cpp
@@ -9,28 +9,20 @@
 #include <AK/IPv4Address.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/EventLoop.h>
+#include <LibCore/System.h>
 #include <LibCore/TCPServer.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
+#include <LibMain/Main.h>
 
-int main(int argc, char** argv)
+ErrorOr<int> serenity_main(Main::Arguments arguments)
 {
-    if (pledge("stdio unix inet id accept", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    if (unveil(nullptr, nullptr) < 0) {
-        perror("unveil");
-        return 1;
-    }
+    TRY(Core::System::pledge("stdio unix inet id accept", nullptr));
+    TRY(Core::System::unveil(nullptr, nullptr));
 
     int port = 7;
 
     Core::ArgsParser args_parser;
     args_parser.add_option(port, "Port to listen on", "port", 'p', "port");
-    args_parser.parse(argc, argv);
+    args_parser.parse(arguments);
 
     if ((u16)port != port) {
         warnln("Invalid port number: {}", port);