Update yasio to latest

thirdparty/README.md

@@ -238,7 +238,7 @@
 
 ## yasio
 - [![Upstream](https://img.shields.io/github/v/release/yasio/yasio?label=Upstream)](https://github.com/yasio/yasio)
-- Version: 3.39.6
+- Version: git 3.39.7-2e7723f
 - License: MIT WITH Anti-996
 
 ## zlib

thirdparty/yasio/detail/config.hpp

@@ -227,6 +227,12 @@ SOFTWARE.
 //   https://github.com/c-ares/c-ares/pull/148
 #define YASIO_FALLBACK_NAME_SERVERS "8.8.8.8,223.5.5.5,114.114.114.114"
 
+// Since ubuntu 16.04, the /etc/resolv.conf control by systemd-resolved service,
+// and the preferred non loopback name server was store to /run/systemd/resolve/resolv.conf
+// refer to: https://unix.stackexchange.com/questions/612416/why-does-etc-resolv-conf-point-at-127-0-0-53
+#define YASIO_SYSTEMD_RESOLV_PATH "/run/systemd/resolve/resolv.conf"
+#define YASIO_SYSTEMD_RESOLV_PATH_LEN (sizeof(YASIO_SYSTEMD_RESOLV_PATH) - 1)
+
 // The yasio ssl client PIN for server to recognize
 #define YASIO_SSL_PIN "yasio_ssl_client"
 #define YASIO_SSL_PIN_LEN (sizeof(YASIO_SSL_PIN) - 1)

thirdparty/yasio/detail/mbedtls.inl

@@ -62,13 +62,20 @@ YASIO__DECL ssl_ctx_st* yssl_ctx_new(const yssl_options& opts)
     int authmode = MBEDTLS_SSL_VERIFY_OPTIONAL;
     if (yasio__valid_str(opts.crtfile_)) // the cafile_ must be full path
     {
-      if ((ret = ::mbedtls_x509_crt_parse_file(&ctx->cert, opts.crtfile_)) == 0)
+      int fail_count = 0;
+      yssl_splitpath(opts.crtfile_, [&](char* first, char* last) {
+        yssl_split_term null_term(last);
+
+        if ((ret = ::mbedtls_x509_crt_parse_file(&ctx->cert, first)) != 0)
+        {
+          ++fail_count;
+          YASIO_LOG("mbedtls_x509_crt_parse_file with ret=-0x%x", (unsigned int)-ret);
+        }
+
+        return !!ret;
+      });
+      if (!fail_count)
         authmode = MBEDTLS_SSL_VERIFY_REQUIRED;
-      else
-      {
-        YASIO_LOG("mbedtls_x509_crt_parse_file with ret=-0x%x", (unsigned int)-ret);
-        break;
-      }
     }
 
     if (opts.client)
@@ -127,7 +134,8 @@ YASIO__DECL ssl_st* yssl_new(ssl_ctx_st* ctx, int fd, const char* hostname, bool
   // ssl_set_fd
   ssl->bio.fd = fd;
   ::mbedtls_ssl_set_bio(ssl, &ssl->bio, ::mbedtls_net_send, ::mbedtls_net_recv, nullptr /*  rev_timeout() */);
-  ::mbedtls_ssl_set_hostname(ssl, hostname);
+  if (client)
+    ::mbedtls_ssl_set_hostname(ssl, hostname);
   return ssl;
 }
 YASIO__DECL void yssl_shutdown(ssl_st*& ssl)

thirdparty/yasio/detail/openssl.inl

@@ -47,27 +47,44 @@ YASIO__DECL ssl_ctx_st* yssl_ctx_new(const yssl_options& opts)
 
   if (opts.client)
   {
+    int fail_count = -1;
     if (yasio__valid_str(opts.crtfile_))
     {
-      if (::SSL_CTX_load_verify_locations(ctx, opts.crtfile_, nullptr) == 1)
+      fail_count = 0;
-      {
+      yssl_splitpath(opts.crtfile_, [&](char* first, char* last) {
-        ::SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, ::SSL_CTX_get_verify_callback(ctx));
+        yssl_split_term null_term(last);
+
+#  if defined(OPENSSL_VERSION_MAJOR) && (OPENSSL_VERSION_MAJOR >= 3)
+        /* OpenSSL 3.0.0 has deprecated SSL_CTX_load_verify_locations */
+        bool ok = ::SSL_CTX_load_verify_file(ctx, first) == 1;
+#  else
+        bool ok = ::SSL_CTX_load_verify_locations(ctx, first, nullptr) == 1;
+#  endif
+        if (!ok)
+        {
+          ++fail_count;
+          YASIO_LOG("[global] load ca certifaction file failed!");
+        }
+
+        return !ok;
+      });
+    }
+    if (!fail_count)
+    {
+      ::SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, ::SSL_CTX_get_verify_callback(ctx));
 #  if OPENSSL_VERSION_NUMBER >= 0x10101000L
-        ::SSL_CTX_set_post_handshake_auth(ctx, 1);
+      ::SSL_CTX_set_post_handshake_auth(ctx, 1);
 #  endif
 #  if defined(X509_V_FLAG_PARTIAL_CHAIN)
-        /* Have intermediate certificates in the trust store be treated as
+      /* Have intermediate certificates in the trust store be treated as
-           trust-anchors, in the same way as self-signed root CA certificates
+        trust-anchors, in the same way as self-signed root CA certificates
-           are. This allows users to verify servers using the intermediate cert
+        are. This allows users to verify servers using the intermediate cert
-           only, instead of needing the whole chain. */
+        only, instead of needing the whole chain. */
-        X509_STORE_set_flags(SSL_CTX_get_cert_store(ctx), X509_V_FLAG_PARTIAL_CHAIN);
+      ::X509_STORE_set_flags(::SSL_CTX_get_cert_store(ctx), X509_V_FLAG_PARTIAL_CHAIN);
 #  endif
-      }
-      else
-        YASIO_LOG("[global] load ca certifaction file failed!");
     }
     else
-      SSL_CTX_set_verify(ctx, SSL_VERIFY_NONE, nullptr);
+      ::SSL_CTX_set_verify(ctx, SSL_VERIFY_NONE, nullptr);
   }
   else
   {

thirdparty/yasio/detail/select_fd_set.hpp

@@ -10,6 +10,7 @@
 #pragma once
 
 #include <vector>
+#include <chrono>
 #include "yasio/detail/socket.hpp"
 
 namespace yasio
@@ -38,7 +39,7 @@ public:
 
   int poll_io(int waitd_ms)
   {
-    timeval waitd_tv = {(decltype(timeval::tv_sec))(waitd_ms / 1000), (decltype(timeval::tv_usec))(waitd_ms % 1000)};
+    timeval waitd_tv = {(decltype(timeval::tv_sec))(waitd_ms / std::milli::den), (decltype(timeval::tv_usec))(waitd_ms % std::milli::den)};
     return ::select(this->max_descriptor_, &(fd_set_[read_op]), &(fd_set_[write_op]), nullptr, &waitd_tv);
   }
 

thirdparty/yasio/detail/signal_blocker.hpp

@@ -1,55 +0,0 @@
-
-//////////////////////////////////////////////////////////////////////////////////////////
-// A multi-platform support c++11 library with focus on asynchronous socket I/O for any
-// client application.
-//////////////////////////////////////////////////////////////////////////////////////////
-//
-// detail/signal_blocker.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2012-2023 HALX99 (halx99 at live dot com)
-
-#pragma once
-
-#include "yasio/compiler/feature_test.hpp"
-
-#if !defined(_WIN32)
-#include <pthread.h>
-#include <signal.h>
-#endif
-
-namespace yasio
-{
-YASIO__NS_INLINE
-namespace inet
-{
-#if defined(_WIN32)
-class signal_blocker {};
-#else
-class signal_blocker {
-public:
-  // Constructor blocks all signals for the calling thread.
-  signal_blocker() : blocked_(false)
-  {
-    sigset_t new_mask;
-    sigfillset(&new_mask);
-    blocked_ = (pthread_sigmask(SIG_BLOCK, &new_mask, &old_mask_) == 0);
-  }
-
-  // Destructor restores the previous signal mask.
-  ~signal_blocker()
-  {
-    if (blocked_)
-      pthread_sigmask(SIG_SETMASK, &old_mask_, 0);
-  }
-
-private:
-  // Have signals been blocked.
-  bool blocked_;
-
-  // The previous signal mask.
-  sigset_t old_mask_;
-};
-#endif
-} // namespace inet
-} // namespace yasio

thirdparty/yasio/detail/ssl.hpp

@@ -58,8 +58,8 @@ struct ssl_st : public mbedtls_ssl_context {
 
 #if defined(YASIO_SSL_BACKEND)
 struct yssl_options {
-  const char* crtfile_;
+  char* crtfile_;
-  const char* keyfile_;
+  char* keyfile_;
   bool client;
 };
 
@@ -87,7 +87,50 @@ YASIO__DECL int yssl_read(ssl_st* ssl, void* data, size_t len, int& err);
 ///////////////////////////////////////////////////////////////////
 // --- Implement common yasio ssl api with different ssl backends
 
-#define yasio__valid_str(str) (str && *str)
+#define yasio__valid_str(cstr) (cstr && *cstr)
+#define yasio__c_str(str) (!str.empty() ? &str.front() : nullptr)
+
+/* private use for split cert files */
+template <typename _Fty>
+inline bool yssl_splitpath(char* str, _Fty&& func)
+{
+  auto _Start  = str; // the start of every string
+  auto _Ptr    = str; // source string iterator
+  bool aborted = false;
+  while ((_Ptr = strchr(_Ptr, ',')))
+  {
+    if (_Start <= _Ptr)
+    {
+      if ((aborted = func(_Start, _Ptr)))
+        break;
+    }
+    _Start = _Ptr + 1;
+    ++_Ptr;
+  }
+
+  if (!aborted)
+    aborted = func(_Start, nullptr); // last one
+  return aborted;
+}
+
+struct yssl_split_term {
+  yssl_split_term(char* end)
+  {
+    if (end) {
+      this->val_ = *end;
+      *end = '\0';
+      this->end_ = end;
+    }
+  }
+  ~yssl_split_term()
+  {
+    if (this->end_)
+      *this->end_ = this->val_;
+  }
+private:
+  char* end_ = nullptr;
+  char val_ = '\0';
+};
 
 #if YASIO_SSL_BACKEND == 1 // openssl
 #  include "yasio/detail/openssl.inl"

thirdparty/yasio/detail/utils.hpp

@@ -1,5 +1,5 @@
 //////////////////////////////////////////////////////////////////////////////////////////
-// A multi-platform support c++11 library with focus on asynchronous socket I/O for any 
+// A multi-platform support c++11 library with focus on asynchronous socket I/O for any
 // client application.
 //////////////////////////////////////////////////////////////////////////////////////////
 /*
@@ -28,6 +28,7 @@ SOFTWARE.
 #ifndef YASIO__UTILS_HPP
 #define YASIO__UTILS_HPP
 #include <assert.h>
+#include <sys/stat.h>
 #include <chrono>
 #include <algorithm>
 #include "yasio/compiler/feature_test.hpp"
@@ -40,18 +41,21 @@ typedef std::chrono::high_resolution_clock steady_clock_t;
 typedef std::chrono::system_clock system_clock_t;
 
 // The high precision nano seconds timestamp since epoch
-template <typename _Ty = steady_clock_t> inline highp_time_t xhighp_clock()
+template <typename _Ty = steady_clock_t>
+inline highp_time_t xhighp_clock()
 {
   auto duration = _Ty::now().time_since_epoch();
   return std::chrono::duration_cast<std::chrono::nanoseconds>(duration).count();
 }
 // The high precision micro seconds timestamp since epoch
-template <typename _Ty = steady_clock_t> inline highp_time_t highp_clock()
+template <typename _Ty = steady_clock_t>
+inline highp_time_t highp_clock()
 {
   return xhighp_clock<_Ty>() / std::milli::den;
 }
 // The normal precision milli seconds timestamp since epoch
-template <typename _Ty = steady_clock_t> inline highp_time_t clock()
+template <typename _Ty = steady_clock_t>
+inline highp_time_t clock()
 {
   return xhighp_clock<_Ty>() / std::micro::den;
 }
@@ -63,14 +67,26 @@ inline highp_time_t time_now() { return ::time(nullptr); }
 #if YASIO__HAS_CXX17
 using std::clamp;
 #else
-template <typename _Ty> const _Ty& clamp(const _Ty& v, const _Ty& lo, const _Ty& hi)
+template <typename _Ty>
+const _Ty& clamp(const _Ty& v, const _Ty& lo, const _Ty& hi)
 {
   assert(!(hi < lo));
   return v < lo ? lo : hi < v ? hi : v;
 }
 #endif
 
-template <typename _Ty> inline void invoke_dtor(_Ty* p) { p->~_Ty(); }
+template <typename _Ty>
+inline void invoke_dtor(_Ty* p)
+{
+  p->~_Ty();
+}
+
+inline bool is_regular_file(const char* path)
+{
+  struct stat st;
+  return (::stat(path, &st) == 0) && (st.st_mode & S_IFREG);
+}
+
 } // namespace yasio
 
 #endif

thirdparty/yasio/xxsocket.cpp

@@ -384,7 +384,26 @@ xxsocket& xxsocket::swap(xxsocket& rhs)
 bool xxsocket::open(int af, int type, int protocol)
 {
   if (invalid_socket == this->fd)
+  {
+#  if defined(_WIN32)
+    this->fd             = ::socket(af, type, protocol);
+    //socket_native_type s = ::WSASocketW(af, type, protocol, 0, 0, WSA_FLAG_OVERLAPPED);
+    ////get_last_error(ec, s == invalid_socket);
+    //if (s == invalid_socket)
+    //  return false;
+    //this->fd = s;
+    //if (af == ASIO_OS_DEF(AF_INET6))
+    //{
+    //  // Try to enable the POSIX default behaviour of having IPV6_V6ONLY set to
+    //  // false. This will only succeed on Windows Vista and later versions of
+    //  // Windows, where a dual-stack IPv4/v6 implementation is available.
+    //  DWORD optval = 0;
+    //  ::setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, reinterpret_cast<const char*>(&optval), sizeof(optval));
+    //}
+#else
     this->fd = ::socket(af, type, protocol);
+#endif
+  }
   return is_open();
 }
 

thirdparty/yasio/xxsocket.hpp

@@ -62,7 +62,7 @@ namespace ip
 {
 #pragma pack(push, 1)
 // ip packet
-struct ip_header {
+struct ip_hdr_st {
   // header size; 5+
   unsigned char header_length : 4;
 
@@ -106,7 +106,7 @@ struct ip_header {
   unsigned char protocol; // TCP / UDP / Other
 
   // check header of IP-PACKET 's correctness.
-  unsigned short checksum;
+  unsigned short sum;
 
   typedef union {
     unsigned int value;
@@ -122,7 +122,7 @@ struct ip_header {
   dotted_decimal_t dst_ip;
 };
 
-struct psd_header {
+struct psd_hdr_st {
   unsigned long src_addr;
   unsigned long dst_addr;
   char mbz;
@@ -130,7 +130,7 @@ struct psd_header {
   unsigned short tcp_length;
 };
 
-struct tcp_header {
+struct tcp_hdr_st {
   unsigned short src_port; // lgtm [cpp/class-many-fields]
   unsigned short dst_port;
   unsigned int seqno;
@@ -139,32 +139,32 @@ struct tcp_header {
   unsigned char reserved : 4;
   unsigned char flg_fin : 1, flg_syn : 1, flg_rst : 1, flg_psh : 1, flg_ack : 1, flg_urg : 1, flg_reserved : 2;
   unsigned short win_length;
-  unsigned short checksum;
+  unsigned short sum;
   unsigned short urp;
 };
 
-struct udp_header {
+struct udp_hdr_st {
   unsigned short src_port;
   unsigned short dst_port;
   unsigned short length;
-  unsigned short checksum;
+  unsigned short sum;
 };
 
-struct icmp_header {
+struct icmp_hdr_st {
-  unsigned char type;      // 8bit type
+  unsigned char type;   // 8bit type
-  unsigned char code;      // 8bit code
+  unsigned char code;   // 8bit code
-  unsigned short checksum; // 16bit check sum
+  unsigned short sum;   // 16bit check sum
-  unsigned short id;       // identifier: usually use process id
+  unsigned short id;    // identifier: usually use process id
-  unsigned short seqno;    // message sequence NO.
+  unsigned short seqno; // message sequence NO.
 };
 
-struct eth_header {
+struct eth_hdr_st {
   unsigned dst_eth[6];
   unsigned src_eth[6];
   unsigned eth_type;
 };
 
-struct arp_header {
+struct arp_hdr_st {
   unsigned short arp_hw;    // format of hardware address
   unsigned short arp_pro;   // format of protocol address
   unsigned char arp_hlen;   // length of hardware address
@@ -176,9 +176,9 @@ struct arp_header {
   unsigned long arp_tpa;    // target protocol address;
 };
 
-struct arp_packet {
+struct arp_packet_st {
-  eth_header ethhdr;
+  eth_hdr_st ethhdr;
-  arp_header arphdr;
+  arp_hdr_st arphdr;
 };
 #pragma pack(pop)
 

thirdparty/yasio/yasio.cpp

@@ -39,7 +39,6 @@ SOFTWARE.
 #include <sys/stat.h>
 #include <fcntl.h>
 #include "yasio/detail/thread_name.hpp"
-#include "yasio/detail/signal_blocker.hpp"
 
 #if defined(YASIO_SSL_BACKEND)
 #  include "yasio/detail/ssl.hpp"
@@ -207,7 +206,7 @@ io_channel::io_channel(io_service& service, int index) : io_base(), service_(ser
   socket_     = std::make_shared<xxsocket>();
   state_      = io_base::state::CLOSED;
   index_      = index;
-  decode_len_ = [=](void* ptr, int len) { return this->__builtin_decode_len(ptr, len); };
+  decode_len_ = [this](void* ptr, int len) { return this->__builtin_decode_len(ptr, len); };
 }
 #if defined(YASIO_SSL_BACKEND)
 SSL_CTX* io_channel::get_ssl_context(bool client) const
@@ -443,13 +442,13 @@ void io_transport::complete_op(io_send_op* op, int error)
 }
 void io_transport::set_primitives()
 {
-  this->write_cb_ = [=](const void* data, int len, const ip::endpoint*, int& error) {
+  this->write_cb_ = [this](const void* data, int len, const ip::endpoint*, int& error) {
     int n = socket_->send(data, len);
     if (n < 0)
       error = xxsocket::get_last_errno();
     return n;
   };
-  this->read_cb_ = [=](void* data, int len, int revent, int& error) {
+  this->read_cb_ = [this](void* data, int len, int revent, int& error) {
     if (revent)
     {
       int n = socket_->recv(data, len);
@@ -478,13 +477,13 @@ int io_transport_ssl::do_ssl_handshake(int& error)
   if (ret == 0) // handshake succeed
   {             // because we invoke handshake in call_read, so we emit EWOULDBLOCK to mark ssl transport status `ok`
     this->state_   = io_base::state::OPENED;
-    this->read_cb_ = [=](void* data, int len, int revent, int& error) {
+    this->read_cb_ = [this](void* data, int len, int revent, int& error) {
       if (revent)
         return yssl_read(ssl_, data, len, error);
       error = EWOULDBLOCK;
       return -1;
     };
-    this->write_cb_ = [=](const void* data, int len, const ip::endpoint*, int& error) { return yssl_write(ssl_, data, len, error); };
+    this->write_cb_ = [this](const void* data, int len, const ip::endpoint*, int& error) { return yssl_write(ssl_, data, len, error); };
 
     YASIO_KLOGD("[index: %d] the connection #%u <%s> --> <%s> is established.", ctx_->index_, this->id_, this->local_endpoint().to_string().c_str(),
                 this->remote_endpoint().to_string().c_str());
@@ -517,7 +516,7 @@ void io_transport_ssl::do_ssl_shutdown()
 }
 void io_transport_ssl::set_primitives()
 {
-  this->read_cb_ = [=](void* /*data*/, int /*len*/, int /*revent*/, int& error) { return do_ssl_handshake(error); };
+  this->read_cb_ = [this](void* /*data*/, int /*len*/, int /*revent*/, int& error) { return do_ssl_handshake(error); };
 }
 #endif
 // ----------------------- io_transport_udp ----------------
@@ -589,7 +588,7 @@ void io_transport_udp::set_primitives()
     io_transport::set_primitives();
   else
   {
-    this->write_cb_ = [=](const void* data, int len, const ip::endpoint* destination, int& error) {
+    this->write_cb_ = [this](const void* data, int len, const ip::endpoint* destination, int& error) {
       assert(destination);
       int n = socket_->sendto(data, len, *destination);
       if (n < 0)
@@ -600,7 +599,7 @@ void io_transport_udp::set_primitives()
       }
       return n;
     };
-    this->read_cb_ = [=](void* data, int len, int revent, int& error) {
+    this->read_cb_ = [this](void* data, int len, int revent, int& error) {
       if (revent)
       {
         ip::endpoint peer;
@@ -735,8 +734,6 @@ void io_service::start(event_cb_t cb)
     this->state_ = io_service::state::RUNNING;
     if (!options_.no_new_thread_)
     {
-      signal_blocker sb;
-      (void)sb;
       this->worker_    = std::thread(&io_service::run, this);
       this->worker_id_ = worker_.get_id();
     }
@@ -805,7 +802,7 @@ void io_service::initialize(const io_hostent* channel_eps, int channel_count)
   if (channel_count < 1)
     channel_count = 1;
 
-  options_.resolv_ = [=](std::vector<ip::endpoint>& eps, const char* host, unsigned short port) { return this->resolve(eps, host, port); };
+  options_.resolv_ = [this](std::vector<ip::endpoint>& eps, const char* host, unsigned short port) { return this->resolve(eps, host, port); };
   register_descriptor(interrupter_.read_descriptor(), socket_event::read);
 
   // create channels
@@ -894,11 +891,9 @@ void io_service::run()
 
   do
   {
-    auto wait_duration   = get_timeout(this->wait_duration_); // Gets current wait duration
+    fd_set = this->fd_set_;
-    this->wait_duration_ = yasio__max_wait_usec;              // Reset next wait duration
 
-    fd_set           = this->fd_set_;
+    const auto waitd_usec = get_timeout(this->wait_duration_); // Gets current wait duration
-    timeval waitd_tv = {(decltype(timeval::tv_sec))(wait_duration / 1000000), (decltype(timeval::tv_usec))(wait_duration % 1000000)};
 #if defined(YASIO_HAVE_CARES)
     /**
      * retrieves the set of file descriptors which the calling application should poll io,
@@ -907,10 +902,13 @@ void io_service::run()
      * https://c-ares.org/ares_timeout.html
      * https://c-ares.org/ares_process_fd.html
      */
-    auto ares_nfds = do_ares_fds(ares_socks, fd_set, waitd_tv);
+    timeval waitd_tv    = {(decltype(timeval::tv_sec))(waitd_usec / std::micro::den), (decltype(timeval::tv_usec))(waitd_usec % std::micro::den)};
+    auto ares_nfds      = do_ares_fds(ares_socks, fd_set, waitd_tv);
+    const auto waitd_ms = static_cast<int>(waitd_tv.tv_sec * std::milli::den + waitd_tv.tv_usec / std::milli::den);
+#else
+    const auto waitd_ms = static_cast<int>(waitd_usec / std::milli::den);
 #endif
 
-    const int waitd_ms = static_cast<int>(waitd_tv.tv_sec * 1000 + waitd_tv.tv_usec / 1000);
     if (waitd_ms > 0)
     {
       YASIO_KLOGV("[core] poll_io max_nfds=%d, waiting... %ld milliseconds", fd_set.max_descriptor(), waitd_ms);
@@ -1219,8 +1217,8 @@ void io_service::do_connect_completion(io_channel* ctx, fd_set_adapter& fd_set)
 #if defined(YASIO_SSL_BACKEND)
 SSL_CTX* io_service::init_ssl_context(ssl_role role)
 {
-  auto ctx         = role == YSSL_CLIENT ? yssl_ctx_new(yssl_options{options_.cafile_.c_str(), nullptr, true})
+  auto ctx         = role == YSSL_CLIENT ? yssl_ctx_new(yssl_options{yasio__c_str(options_.cafile_), nullptr, true})
-                                         : yssl_ctx_new(yssl_options{options_.crtfile_.c_str(), options_.keyfile_.c_str(), false});
+                                         : yssl_ctx_new(yssl_options{yasio__c_str(options_.crtfile_), yasio__c_str(options_.keyfile_), false});
   ssl_roles_[role] = ctx;
   return ctx;
 }
@@ -1309,10 +1307,18 @@ void io_service::recreate_ares_channel()
   if (ares_)
     destroy_ares_channel();
 
+  int optmask          = ARES_OPT_TIMEOUTMS | ARES_OPT_TRIES /* | ARES_OPT_LOOKUPS*/;
   ares_options options = {};
   options.timeout      = static_cast<int>(this->options_.dns_queries_timeout_ / std::milli::den);
   options.tries        = this->options_.dns_queries_tries_;
-  int status           = ::ares_init_options(&ares_, &options, ARES_OPT_TIMEOUTMS | ARES_OPT_TRIES /* | ARES_OPT_LOOKUPS*/);
+#  if defined(__linux__) && !defined(__ANDROID__)
+  if (yasio::is_regular_file(YASIO_SYSTEMD_RESOLV_PATH))
+  {
+    options.resolvconf_path = strndup(YASIO_SYSTEMD_RESOLV_PATH, YASIO_SYSTEMD_RESOLV_PATH_LEN);
+    optmask |= ARES_OPT_RESOLVCONF;
+  }
+#  endif
+  int status = ::ares_init_options(&ares_, &options, optmask);
   if (status == ARES_SUCCESS)
   {
     YASIO_KLOGD("[c-ares] create channel succeed");
@@ -1806,6 +1812,8 @@ void io_service::process_timers()
 }
 highp_time_t io_service::get_timeout(highp_time_t usec)
 {
+  this->wait_duration_ = yasio__max_wait_usec; // Reset next wait duration per frame
+
   if (this->timer_queue_.empty())
     return usec;
 
@@ -1905,11 +1913,11 @@ void io_service::start_query(io_channel* ctx)
 #endif
 #if !defined(YASIO_HAVE_CARES)
   // init async name query thread state
-  std::string resolving_host                    = ctx->remote_host_;
+  auto resolving_host                           = ctx->remote_host_;
-  u_short resolving_port                        = ctx->remote_port_;
+  auto resolving_port                           = ctx->remote_port_;
   std::weak_ptr<cxx17::shared_mutex> weak_mutex = life_mutex_;
   std::weak_ptr<life_token> life_token          = life_token_;
-  std::thread async_resolv_thread([=] {
+  std::thread async_resolv_thread([this, life_token, weak_mutex, resolving_host, resolving_port, ctx] {
     // check life token
     if (life_token.use_count() < 1)
       return;

thirdparty/yasio/yasio.hpp

@@ -1048,6 +1048,8 @@ public:
   // Gets channel by index
   YASIO__DECL io_channel* channel_at(size_t index) const;
 
+  YASIO__DECL static const char* strerror(int error);
+
 private:
   YASIO__DECL void do_stop(uint8_t flags);
   YASIO__DECL void schedule_timer(highp_timer*, timer_cb_t&&);
@@ -1151,8 +1153,6 @@ private:
   YASIO__DECL void do_accept(io_channel*);
   YASIO__DECL void do_accept_completion(io_channel*, fd_set_adapter& fd_set);
 
-  YASIO__DECL static const char* strerror(int error);
-
   /*
   ** summary: For udp-server only, make dgram handle to communicate with client
   */