From 5e10a31e9f17b2730961c0aea299c2a5c496c245 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dietmar=20K=C3=BChl?= <dietmar.kuehl@me.com>
Date: Thu, 28 Nov 2024 12:21:30 +0100
Subject: [PATCH 1/7] fixing an issue discovered by clang-19

---
 CMakeLists.txt                 |  2 +-
 examples/demo_algorithm.hpp    |  9 +++------
 examples/empty.cpp             | 35 +++++++++++++++++++++++++++++++++-
 src/beman/net29/CMakeLists.txt |  2 +-
 4 files changed, 39 insertions(+), 9 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7366bc6..8ff6d46 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,7 +18,7 @@ FetchContent_Declare(
     execution26
     # for local development, use SOURCE_DIR <path-to>/execution26
     GIT_REPOSITORY https://github.com/bemanproject/execution26
-    GIT_TAG 81c58fe
+    GIT_TAG 8420165
 )
 FetchContent_MakeAvailable(execution26)
 
diff --git a/examples/demo_algorithm.hpp b/examples/demo_algorithm.hpp
index b698970..43625a7 100644
--- a/examples/demo_algorithm.hpp
+++ b/examples/demo_algorithm.hpp
@@ -16,7 +16,7 @@
 #    include<expected>
 #endif
 
-#include <iostream> //-dk:TODO remove
+#include <beman/execution26/detail/suppress_push.hpp>
 
 // ----------------------------------------------------------------------------
 
@@ -88,11 +88,6 @@ namespace demo::detail
     {
         using type = ex::detail::type_list<T...>;
     };
-    template <typename... T>
-    struct make_type_list<ex::completion_signatures<T...>>
-    {
-        using type = ex::detail::type_list<T...>;
-    };
     template <typename T>
     using make_type_list_t = typename make_type_list<T>::type;
 }
@@ -448,4 +443,6 @@ inline auto demo::when_any_t::operator()(Sender&&...sender) const
 
 // ----------------------------------------------------------------------------
 
+#include <beman/execution26/detail/suppress_pop.hpp>
+
 #endif
diff --git a/examples/empty.cpp b/examples/empty.cpp
index 9489180..52bd3e9 100644
--- a/examples/empty.cpp
+++ b/examples/empty.cpp
@@ -26,7 +26,40 @@ std::unordered_map<std::string, std::string> files{
     {"/logo.png", "examples/data/logo.png"},
 };
 
+struct sender {
+    using sender_concept = ex::sender_t;
+    using completion_signatures =
+        ex::completion_signatures<ex::set_value_t(int)>;
+    
+    struct state {
+        using operation_state_concept = ex::operation_state_t;
+        void start() & noexcept {}
+    };
+
+    state connect(auto&&) { return {}; }
+};
+
+static_assert(ex::operation_state<sender::state>);
+static_assert(ex::sender<sender>);
+static_assert(ex::sender_in<sender>);
+
+struct receiver {
+    using receiver_concept = ex::receiver_t;
+    void set_value(auto&&...) && noexcept {}
+    void set_error(auto&&)  && noexcept {}
+    void set_stopped() && noexcept {}
+};
+
+static_assert(ex::receiver<receiver>);
+
 auto main() -> int
 {
-    std::cout << "hello, world\n";
+    auto s{demo::when_any(sender{})};
+    using t = demo::detail::make_type_list<beman::execution26::completion_signatures<beman::execution26::set_value_t (int)>>;
+    static_assert(std::same_as<t, t>);
+    std::move(s).connect(receiver{});
+    ex::connect(std::move(s), receiver{});
+    static_assert(ex::sender<decltype(s)>);
+    static_assert(ex::sender_in<decltype(s)>);
+    ex::sync_wait(std::move(s));
 }
diff --git a/src/beman/net29/CMakeLists.txt b/src/beman/net29/CMakeLists.txt
index 1efbcb0..68f04bb 100644
--- a/src/beman/net29/CMakeLists.txt
+++ b/src/beman/net29/CMakeLists.txt
@@ -56,7 +56,7 @@ install(
   FILE_SET ${TARGET_LIBRARY}_detail_headers
 )
 target_include_directories(${TARGET_LIBRARY} PUBLIC $<INSTALL_INTERFACE:include>)
-target_link_libraries(${TARGET_LIBRARY} PUBLIC beman::execution26)
+target_link_libraries(${TARGET_LIBRARY} PUBLIC beman_execution26)
 
 install(EXPORT ${TARGETS_EXPORT_NAME}1
   FILE ${TARGET_LIBRARY}-config.cmake

From 12faf5bf5e7badfa6c261a5b0f3741ffc79182b3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dietmar=20K=C3=BChl?= <dietmar.kuehl@me.com>
Date: Thu, 28 Nov 2024 09:49:59 +0100
Subject: [PATCH 2/7] added code and data for the 2024-11-27 Milano
 presentation

---
 examples/CMakeLists.txt         |   1 +
 examples/data/index-milano.html |  10 ++++
 examples/data/itcpp.png         | Bin 0 -> 17743 bytes
 examples/milano.cpp             |  97 ++++++++++++++++++++++++++++++++
 4 files changed, 108 insertions(+)
 create mode 100644 examples/data/index-milano.html
 create mode 100644 examples/data/itcpp.png
 create mode 100644 examples/milano.cpp

diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
index cc0922e..851c290 100644
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -10,6 +10,7 @@ set(EXAMPLES
   client
   task
   cppcon-2024
+  milano
 )
 
 foreach(EXAMPLE ${EXAMPLES})
diff --git a/examples/data/index-milano.html b/examples/data/index-milano.html
new file mode 100644
index 0000000..aea54f3
--- /dev/null
+++ b/examples/data/index-milano.html
@@ -0,0 +1,10 @@
+<html>
+   <head>
+       <title>Ciao Milano!</title>
+   </head>
+   <body>
+       <img src="/logo.png"/>
+       <h1>Ciao Milano!</h1>
+       <img src="/itcpp.png"/>
+   </body>
+</html>
diff --git a/examples/data/itcpp.png b/examples/data/itcpp.png
new file mode 100644
index 0000000000000000000000000000000000000000..12c1056ae52f943e99972f0a03ff9127364a03fc
GIT binary patch
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diff --git a/examples/milano.cpp b/examples/milano.cpp
new file mode 100644
index 0000000..6800480
--- /dev/null
+++ b/examples/milano.cpp
@@ -0,0 +1,97 @@
+// examples/http-server.cpp                                           -*-C++-*-
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#include <beman/net29/net.hpp>
+#include <beman/execution26/execution.hpp>
+#include "demo_algorithm.hpp"
+#include "demo_error.hpp"
+#include "demo_scope.hpp"
+#include "demo_task.hpp"
+#include <iostream>
+#include <string>
+#include <fstream>
+#include <sstream>
+#include <string_view>
+#include <unordered_map>
+
+namespace ex  = beman::execution26;
+namespace net = beman::net29;
+using namespace std::chrono_literals;
+
+// ----------------------------------------------------------------------------
+
+std::unordered_map<std::string, std::string> files{
+    {"/", "examples/data/index-milano.html"},
+    {"/favicon.ico", "examples/data/favicon.ico"},
+    {"/logo.png", "examples/data/logo.png"},
+    {"/itcpp.png", "examples/data/itcpp.png"},
+};
+
+auto timeout(auto scheduler, auto dur, ex::sender auto sender) {
+    return demo::when_any(
+        net::resume_after(scheduler, dur)
+          | demo::into_error([]{ return std::error_code(); }),
+        std::move(sender)
+    );
+}
+
+using on_exit = std::unique_ptr<char const, decltype([](auto msg){ std::cout << msg << "\n"; })>;
+demo::task<> run_client(auto client, auto s) {
+    on_exit exit("client exiting");
+    char buffer[8194];
+    std::ostringstream out;
+    try {
+    while (true) {
+        auto n = co_await timeout(s, 1s, net::async_receive(client, net::buffer(buffer)));
+        if (n == 0u)
+            co_return;
+        // std::cout << "received=" << std::string_view(buffer, n) << "\n";
+        std::istringstream in(std::string(buffer, n));
+        std::string method, url, version;
+        if (!(in >> method >> url >> version))
+           co_return;
+        auto it = files.find(url);
+        std::cout << "url=" << url << " found=" << (it == files.end()? "no": "yes") << "\n";
+        std::string content;
+        if (it != files.end()) {
+            std::ifstream fin(it->second);
+            out.str({});
+            out << fin.rdbuf();
+            content = out.str();
+        }
+        out.str(std::string());
+        out << "HTTP/1.1 200 found\r\n"
+            << "Content-Length: " << content.size() << "\r\n"
+            << "\r\n"
+            << content;
+
+        content = out.str();
+        co_await net::async_send(client, net::buffer(content));
+        //break;
+    }
+    } catch (std::exception const& ex) {
+        std::cout << "received timeout! ex=" << ex.what() << "\n";
+    } catch (...) {
+        std::cout << "received timeout!\n";
+    }
+}
+
+auto main() -> int
+{
+    demo::scope scope;
+    net::io_context context;
+
+    scope.spawn([](auto& context, auto& scope)->demo::task<> {
+        net::ip::tcp::endpoint ep(net::ip::address_v4::any(), 12345);
+        net::ip::tcp::acceptor acceptor(context, ep);
+        while (true) {
+           auto[client, address] = co_await net::async_accept(acceptor);
+           std::cout << "received a connection from " << address << "\n";
+           scope.spawn(run_client(std::move(client), context.get_scheduler()));
+        }
+    }(context, scope));
+
+    context.run();
+
+    
+}

From d52c4d54ecf15624042cf081c90ee58ec6459e18 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dietmar=20K=C3=BChl?= <dietmar.kuehl@me.com>
Date: Thu, 28 Nov 2024 12:32:59 +0100
Subject: [PATCH 3/7] fix issues discovered by CI

---
 examples/demo_algorithm.hpp | 4 +++-
 examples/milano.cpp         | 4 ++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/examples/demo_algorithm.hpp b/examples/demo_algorithm.hpp
index 43625a7..dcc2f39 100644
--- a/examples/demo_algorithm.hpp
+++ b/examples/demo_algorithm.hpp
@@ -16,7 +16,9 @@
 #    include<expected>
 #endif
 
-#include <beman/execution26/detail/suppress_push.hpp>
+#if 15 < __clang_major__
+#    include <beman/execution26/detail/suppress_push.hpp>
+#endif
 
 // ----------------------------------------------------------------------------
 
diff --git a/examples/milano.cpp b/examples/milano.cpp
index 6800480..358b15a 100644
--- a/examples/milano.cpp
+++ b/examples/milano.cpp
@@ -35,9 +35,9 @@ auto timeout(auto scheduler, auto dur, ex::sender auto sender) {
     );
 }
 
-using on_exit = std::unique_ptr<char const, decltype([](auto msg){ std::cout << msg << "\n"; })>;
+using on_exit_msg = std::unique_ptr<char const, decltype([](auto msg){ std::cout << msg << "\n"; })>;
 demo::task<> run_client(auto client, auto s) {
-    on_exit exit("client exiting");
+    on_exit_msg exit("client exiting");
     char buffer[8194];
     std::ostringstream out;
     try {

From ac2aff6977c635f720a83550f6363908168a5d36 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dietmar=20K=C3=BChl?= <dietmar.kuehl@me.com>
Date: Thu, 28 Nov 2024 12:51:49 +0100
Subject: [PATCH 4/7] another attempt fixing CI reported errors

---
 examples/demo_algorithm.hpp | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/examples/demo_algorithm.hpp b/examples/demo_algorithm.hpp
index dcc2f39..2ea1be5 100644
--- a/examples/demo_algorithm.hpp
+++ b/examples/demo_algorithm.hpp
@@ -4,6 +4,18 @@
 #ifndef INCLUDED_EXAMPLES_DEMO_ALGORITHM
 #define INCLUDED_EXAMPLES_DEMO_ALGORITHM
 
+#if defined(__GNUC__)
+#    pragma GCC diagnostic push
+#    pragma GCC diagnostic ignored "-Wmissing-braces"
+#    pragma GCC diagnostic ignored "-Wmissing-field-initializers"
+#endif
+
+#if defined(__clang__)
+#    pragma clang diagnostic push
+#    pragma clang diagnostic ignored "-Wunknown-warning-option"
+#    pragma clang diagnostic ignored "-Wmissing-braces"
+#endif
+
 #include <beman/net29/net.hpp>
 #include <atomic>
 #include <optional>
@@ -16,10 +28,6 @@
 #    include<expected>
 #endif
 
-#if 15 < __clang_major__
-#    include <beman/execution26/detail/suppress_push.hpp>
-#endif
-
 // ----------------------------------------------------------------------------
 
 namespace demo
@@ -445,6 +453,4 @@ inline auto demo::when_any_t::operator()(Sender&&...sender) const
 
 // ----------------------------------------------------------------------------
 
-#include <beman/execution26/detail/suppress_pop.hpp>
-
 #endif

From 036a6fd389812c8b376840b68142a62908be6b15 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dietmar=20K=C3=BChl?= <dietmar.kuehl@me.com>
Date: Sat, 30 Nov 2024 15:15:32 +0000
Subject: [PATCH 5/7] restoring the "empty" example

---
 examples/empty.cpp | 35 +----------------------------------
 1 file changed, 1 insertion(+), 34 deletions(-)

diff --git a/examples/empty.cpp b/examples/empty.cpp
index 52bd3e9..9489180 100644
--- a/examples/empty.cpp
+++ b/examples/empty.cpp
@@ -26,40 +26,7 @@ std::unordered_map<std::string, std::string> files{
     {"/logo.png", "examples/data/logo.png"},
 };
 
-struct sender {
-    using sender_concept = ex::sender_t;
-    using completion_signatures =
-        ex::completion_signatures<ex::set_value_t(int)>;
-    
-    struct state {
-        using operation_state_concept = ex::operation_state_t;
-        void start() & noexcept {}
-    };
-
-    state connect(auto&&) { return {}; }
-};
-
-static_assert(ex::operation_state<sender::state>);
-static_assert(ex::sender<sender>);
-static_assert(ex::sender_in<sender>);
-
-struct receiver {
-    using receiver_concept = ex::receiver_t;
-    void set_value(auto&&...) && noexcept {}
-    void set_error(auto&&)  && noexcept {}
-    void set_stopped() && noexcept {}
-};
-
-static_assert(ex::receiver<receiver>);
-
 auto main() -> int
 {
-    auto s{demo::when_any(sender{})};
-    using t = demo::detail::make_type_list<beman::execution26::completion_signatures<beman::execution26::set_value_t (int)>>;
-    static_assert(std::same_as<t, t>);
-    std::move(s).connect(receiver{});
-    ex::connect(std::move(s), receiver{});
-    static_assert(ex::sender<decltype(s)>);
-    static_assert(ex::sender_in<decltype(s)>);
-    ex::sync_wait(std::move(s));
+    std::cout << "hello, world\n";
 }

From a8c4e64489c53e68f37e26508e5a140f10eac930 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dietmar=20K=C3=BChl?= <dietmar.kuehl@me.com>
Date: Sat, 30 Nov 2024 15:31:39 +0000
Subject: [PATCH 6/7] updated the execution26 reference version

---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8ff6d46..b503abb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,7 +18,7 @@ FetchContent_Declare(
     execution26
     # for local development, use SOURCE_DIR <path-to>/execution26
     GIT_REPOSITORY https://github.com/bemanproject/execution26
-    GIT_TAG 8420165
+    GIT_TAG c32b4fc
 )
 FetchContent_MakeAvailable(execution26)
 

From f90be71077b62b28d4d36ce376b9aed30deb8a6e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dietmar=20K=C3=BChl?= <dietmar.kuehl@me.com>
Date: Sat, 30 Nov 2024 15:41:28 +0000
Subject: [PATCH 7/7] trying to avoid a CI problem for older clang

---
 examples/demo_algorithm.hpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/examples/demo_algorithm.hpp b/examples/demo_algorithm.hpp
index 2ea1be5..12da3b5 100644
--- a/examples/demo_algorithm.hpp
+++ b/examples/demo_algorithm.hpp
@@ -98,6 +98,13 @@ namespace demo::detail
     {
         using type = ex::detail::type_list<T...>;
     };
+#if __clang_major__ < 16
+    template <typename... T>
+    struct make_type_list<ex::completion_signatures<T...>>
+    {
+        using type = ex::detail::type_list<T...>;
+    };
+#endif
     template <typename T>
     using make_type_list_t = typename make_type_list<T>::type;
 }