From c9ee717862cbb6ef76681c7af10c15d56766adb0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=AC=8A=E5=B0=91?= <ljqican@163.com>
Date: Sun, 14 Jun 2026 13:07:58 +0800
Subject: [PATCH] fix: replace deprecated asio API.

---
 examples/asio/autoecho.cpp      |  5 ++---
 examples/asio/ps/publisher.cpp  |  5 ++---
 examples/asio/ps/subscriber.cpp |  5 ++---
 examples/asio/round_robin.hpp   | 14 +++++++-------
 4 files changed, 13 insertions(+), 16 deletions(-)

diff --git a/examples/asio/autoecho.cpp b/examples/asio/autoecho.cpp
index ace251b1..27dd0592 100644
--- a/examples/asio/autoecho.cpp
+++ b/examples/asio/autoecho.cpp
@@ -183,10 +183,9 @@ void client( std::shared_ptr< boost::asio::io_context > const& io_ctx, tcp::acce
     print( tag(), ": echo-client started");
     for (unsigned count = 0; count < iterations; ++count) {
         tcp::resolver resolver( * io_ctx);
-        tcp::resolver::query query( tcp::v4(), "127.0.0.1", "9999");
-        tcp::resolver::iterator iterator = resolver.resolve( query);
+        tcp::resolver::results_type results = resolver.resolve( tcp::v4(), "127.0.0.1", "9999");
         tcp::socket s( * io_ctx);
-        boost::asio::connect( s, iterator);
+        boost::asio::connect( s, results);
         for (unsigned msg = 0; msg < 1; ++msg) {
             std::ostringstream msgbuf;
             msgbuf << "from " << fiber_names.lookup() << " " << count << "." << msg;
diff --git a/examples/asio/ps/publisher.cpp b/examples/asio/ps/publisher.cpp
index 245e56cc..2e95a505 100644
--- a/examples/asio/ps/publisher.cpp
+++ b/examples/asio/ps/publisher.cpp
@@ -28,10 +28,9 @@ int main( int argc, char* argv[]) {
         }
         boost::asio::io_context io_context;
         tcp::resolver resolver( io_context);
-        tcp::resolver::query query( tcp::v4(), argv[1], "9997");
-        tcp::resolver::iterator iterator = resolver.resolve(query);
+        tcp::resolver::results_type results = resolver.resolve( tcp::v4(), argv[1], "9997");
         tcp::socket s( io_context);
-        boost::asio::connect( s, iterator);
+        boost::asio::connect( s, results);
         char msg[max_length];
         std::string queue( argv[2]);
         std::memset( msg, '\0', max_length);
diff --git a/examples/asio/ps/subscriber.cpp b/examples/asio/ps/subscriber.cpp
index 83b5e8b3..3b4d847f 100644
--- a/examples/asio/ps/subscriber.cpp
+++ b/examples/asio/ps/subscriber.cpp
@@ -28,10 +28,9 @@ int main( int argc, char* argv[]) {
         }
         boost::asio::io_context io_context;
         tcp::resolver resolver( io_context);
-        tcp::resolver::query query( tcp::v4(), argv[1], "9998");
-        tcp::resolver::iterator iterator = resolver.resolve( query);
+        tcp::resolver::results_type results = resolver.resolve( tcp::v4(), argv[1], "9998");
         tcp::socket s( io_context);
-        boost::asio::connect( s, iterator);
+        boost::asio::connect( s, results);
         char msg[max_length];
         std::string queue( argv[2]);
         std::memset( msg, '\0', max_length);
diff --git a/examples/asio/round_robin.hpp b/examples/asio/round_robin.hpp
index 02b3fbdb..537a5012 100644
--- a/examples/asio/round_robin.hpp
+++ b/examples/asio/round_robin.hpp
@@ -49,11 +49,11 @@ public:
     struct service : public boost::asio::io_context::service {
         static boost::asio::io_context::id                  id;
 
-        std::unique_ptr< boost::asio::io_context::work >    work_;
+        boost::asio::executor_work_guard< boost::asio::io_context::executor_type >    work_;
 
-        service( boost::asio::io_context & io_ctx) :
-            boost::asio::io_context::service( io_ctx),
-            work_{ new boost::asio::io_context::work( io_ctx) } {
+        service( boost::asio::execution_context & ctx) :
+            boost::asio::io_context::service( static_cast< boost::asio::io_context & >( ctx) ),
+            work_{ boost::asio::make_work_guard( static_cast< boost::asio::io_context & >( ctx) ) } {
         }
 
         virtual ~service() {}
@@ -61,7 +61,7 @@ public:
         service( service const&) = delete;
         service & operator=( service const&) = delete;
 
-        void shutdown_service() override final {
+        void shutdown() {
             work_.reset();
         }
     };
@@ -71,10 +71,10 @@ public:
     round_robin( std::shared_ptr< boost::asio::io_context > const& io_ctx) :
         io_ctx_( io_ctx),
         suspend_timer_( * io_ctx_) {
-        // We use add_service() very deliberately. This will throw
+        // We use make_service() very deliberately. This will throw
         // service_already_exists if you pass the same io_context instance to
         // more than one round_robin instance.
-        boost::asio::add_service( * io_ctx_, new service( * io_ctx_) );
+        boost::asio::make_service< service >( static_cast< boost::asio::execution_context & >( * io_ctx_) );
         boost::asio::post( * io_ctx_, [this]() mutable {
 //]
 //[asio_rr_service_lambda