René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"为啥不提供异步接口","articleBody":"我看了您的部分代码（主要是关于http client部分的），发现其本身就是支持异步调用的。\r\n\r\n---------------------------------------------------------------------------------------\r\nvoid ClientBase::AsyncResolve(string_view default_port) {\r\n  std::string port = request_-\u003eport();\r\n  if (port.empty()) {\r\n    port = ToString(default_port);\r\n  }\r\n\r\n  LOG_VERB(\"Resolve host (%s)\", request_-\u003ehost().c_str());\r\n\r\n  // The protocol depends on the `host`, both V4 and V6 are supported.\r\n  resolver_.async_resolve(request_-\u003ehost(), port,\r\n                          std::bind(\u0026ClientBase::OnResolve, this, _1, _2));\r\n}\r\n\r\nvoid ClientBase::OnResolve(boost::system::error_code ec,\r\n                           tcp::resolver::results_type endpoints) {\r\n  if (ec) {\r\n    LOG_ERRO(\"Host resolve error (%s)\", ec.message().c_str());\r\n    error_.Set(Error::kResolveError, \"Host resolve error\");\r\n    FinishRequest();\r\n    return;\r\n  }\r\n\r\n  LOG_VERB(\"Connect socket\");\r\n\r\n  AsyncWaitDeadlineTimer(connect_timeout_);\r\n\r\n  socket_-\u003eAsyncConnect(request_-\u003ehost(), endpoints,\r\n                        std::bind(\u0026ClientBase::OnConnect, this, _1, _2));\r\n}\r\n---------------------------------------------------------------------------------------\r\n\r\n以上代码就是异步调用的。只是在ClientBase::FinishRequest函数中强行做了一个同步。\r\n\r\n我比较好奇的是，为啥不开放异步调用接口。对整个框架其实也没有额外的负担。","author":{"url":"https://github.com/windflowerly","@type":"Person","name":"windflowerly"},"datePublished":"2021-09-29T02:51:19.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/26/webcc/issues/26"}