Forbit to create http async clients on stack since they are derived from std::shared_from_this.

example/github_rest_client/main.cc

@@ -2,22 +2,21 @@
 
 #include "json/json.h"
 
-#include "webcc/rest_ssl_client.h"
 #include "webcc/logger.h"
+#include "webcc/rest_ssl_client.h"
 
 const bool kSslVerify = false;
 
 #define PRINT_CONTENT 0
 
-
 static Json::Value StringToJson(const std::string& str) {
   Json::Value json;
 
   Json::CharReaderBuilder builder;
   std::stringstream stream(str);
-  std::string errs;
-  if (!Json::parseFromStream(builder, stream, &json, &errs)) {
-    std::cerr << errs << std::endl;
+  std::string errors;
+  if (!Json::parseFromStream(builder, stream, &json, &errors)) {
+    std::cerr << errors << std::endl;
   }
 
   return json;

example/http_async_client/main.cc

@@ -9,12 +9,10 @@
 //   Only HttpBin.org has this issue.
 
 static void Test(boost::asio::io_context& io_context) {
-  auto request = webcc::HttpRequest::Make(webcc::kHttpGet, "/get",
-                                          "httpbin.org");
+  auto request = webcc::HttpRequest::New(webcc::kHttpGet, "/get",
+                                         "httpbin.org");
 
-  webcc::HttpAsyncClientPtr client{
-    new webcc::HttpAsyncClient(io_context)
-  };
+  auto client = webcc::HttpAsyncClient::New(io_context);
 
   client->SetTimeout(3);
 

example/http_client/main.cc

@@ -14,8 +14,8 @@ static void PrintError(const webcc::HttpClient& client) {
 int main() {
   WEBCC_LOG_INIT("", webcc::LOG_CONSOLE);
 
-  auto request = webcc::HttpRequest::Make(webcc::kHttpGet, "/get",
-                                          "httpbin.org");
+  auto request = webcc::HttpRequest::New(webcc::kHttpGet, "/get",
+                                         "httpbin.org");
 
   webcc::HttpClient client;
 

example/http_ssl_async_client/main.cc

@@ -26,15 +26,13 @@ int main(int argc, char* argv[]) {
   boost::asio::io_context io_context;
 
   // Leave port to default value.
-  auto request = webcc::HttpRequest::Make(webcc::kHttpGet, url, host);
+  auto request = webcc::HttpRequest::New(webcc::kHttpGet, url, host);
 
   // Verify the certificate of the peer or not.
   // See HttpSslClient::Request() for more details.
   bool ssl_verify = false;
 
-  webcc::HttpSslAsyncClientPtr client{
-    new webcc::HttpSslAsyncClient{ io_context, 2000, ssl_verify }
-  };
+  auto client = webcc::HttpSslAsyncClient::New(io_context, 2000, ssl_verify);
 
   // Response callback.
   auto callback = [](webcc::HttpResponsePtr response, webcc::Error error,

webcc/http_async_client.h

@@ -5,15 +5,27 @@
 
 namespace webcc {
 
+class HttpAsyncClient;
+typedef std::shared_ptr<HttpAsyncClient> HttpAsyncClientPtr;
+
 // HTTP asynchronous client.
 class HttpAsyncClient : public HttpAsyncClientBase {
  public:
-  explicit HttpAsyncClient(boost::asio::io_context& io_context,
-                           std::size_t buffer_size = 0);
-
   ~HttpAsyncClient() = default;
 
+  // Forbid to create HttpAsyncClient in stack since it's derived from
+  // std::shared_from_this.
+  static HttpAsyncClientPtr New(boost::asio::io_context& io_context,
+                                std::size_t buffer_size = 0) {
+    return HttpAsyncClientPtr{
+      new HttpAsyncClient(io_context, buffer_size)
+    };
+  }
+
  private:
+  explicit HttpAsyncClient(boost::asio::io_context& io_context,
+                           std::size_t buffer_size = 0);
+
   void Resolve() final {
     DoResolve(kHttpPort);
   }
@@ -34,8 +46,6 @@ class HttpAsyncClient : public HttpAsyncClientBase {
   tcp::socket socket_;
 };
 
-typedef std::shared_ptr<HttpAsyncClient> HttpAsyncClientPtr;
-
 }  // namespace webcc
 
 #endif  // WEBCC_HTTP_ASYNC_CLIENT_H_

webcc/http_request.cc

@@ -33,11 +33,11 @@ void HttpRequest::Prepare() {
 }
 
 // static
-HttpRequestPtr HttpRequest::Make(const std::string& method,
-                                 const std::string& url,
-                                 const std::string& host,
-                                 const std::string& port,
-                                 bool prepare) {
+HttpRequestPtr HttpRequest::New(const std::string& method,
+                                const std::string& url,
+                                const std::string& host,
+                                const std::string& port,
+                                bool prepare) {
   HttpRequestPtr request{
     new HttpRequest{ method, url, host, port }
   };

webcc/http_request.h

@@ -43,11 +43,11 @@ class HttpRequest : public HttpMessage {
   // Compose start line, set Host header, etc.
   void Prepare() override;
 
-  static HttpRequestPtr Make(const std::string& method,
-                             const std::string& url,
-                             const std::string& host,
-                             const std::string& port = "",
-                             bool prepare = true);
+  static HttpRequestPtr New(const std::string& method,
+                            const std::string& url,
+                            const std::string& host,
+                            const std::string& port = "",
+                            bool prepare = true);
 
  private:
   friend class HttpRequestParser;

webcc/http_ssl_async_client.h

@@ -7,24 +7,37 @@
 
 namespace webcc {
 
+class HttpSslAsyncClient;
+typedef std::shared_ptr<HttpSslAsyncClient> HttpSslAsyncClientPtr;
+
 // HTTP SSL (a.k.a., HTTPS) asynchronous client.
 class HttpSslAsyncClient : public HttpAsyncClientBase {
  public:
-  // SSL verification (|ssl_verify|) needs CA certificates to be found
-  // in the default verify paths of OpenSSL. On Windows, it means you need to
-  // set environment variable SSL_CERT_FILE properly.
-  explicit HttpSslAsyncClient(boost::asio::io_context& io_context,
-                              std::size_t buffer_size = 0,
-                              bool ssl_verify = true);
-
   ~HttpSslAsyncClient() = default;
 
+  // Forbid to create HttpSslAsyncClient in stack since it's derived from
+  // std::shared_from_this.
+  static HttpSslAsyncClientPtr New(boost::asio::io_context& io_context,
+                                   std::size_t buffer_size = 0,
+                                   bool ssl_verify = true) {
+    return HttpSslAsyncClientPtr{
+      new HttpSslAsyncClient(io_context, buffer_size, ssl_verify)
+    };
+  }
+
   // See https://stackoverflow.com/q/657155/6825348
   std::shared_ptr<HttpSslAsyncClient> shared_from_this() {
     return shared_from_base<HttpSslAsyncClient>();
   }
 
  private:
+  // SSL verification (|ssl_verify|) needs CA certificates to be found
+  // in the default verify paths of OpenSSL. On Windows, it means you need to
+  // set environment variable SSL_CERT_FILE properly.
+  explicit HttpSslAsyncClient(boost::asio::io_context& io_context,
+                              std::size_t buffer_size = 0,
+                              bool ssl_verify = true);
+
   void Resolve() final;
 
   // Override to do handshake after connected.
@@ -51,8 +64,6 @@ class HttpSslAsyncClient : public HttpAsyncClientBase {
   bool ssl_verify_;
 };
 
-typedef std::shared_ptr<HttpSslAsyncClient> HttpSslAsyncClientPtr;
-
 }  // namespace webcc
 
 #endif  // WEBCC_HTTP_SSL_ASYNC_CLIENT_H_

webcc/rest_async_client.cc

@@ -26,9 +26,7 @@ void RestAsyncClient::Request(const std::string& method,
 
   http_request->Prepare();
 
-  HttpAsyncClientPtr http_async_client{
-    new HttpAsyncClient(io_context_, buffer_size_)
-  };
+  auto http_async_client = HttpAsyncClient::New(io_context_, buffer_size_);
 
   if (timeout_seconds_ > 0) {
     http_async_client->SetTimeout(timeout_seconds_);

webcc/soap_async_client.cc

@@ -65,9 +65,7 @@ void SoapAsyncClient::Request(const std::string& operation,
   http_request->SetHeader(kSoapAction, operation);
   http_request->Prepare();
 
-  HttpAsyncClientPtr http_async_client{
-    new HttpAsyncClient(io_context_, buffer_size_)
-  };
+  auto http_async_client = HttpAsyncClient::New(io_context_, buffer_size_);
 
   if (timeout_seconds_ > 0) {
     http_async_client->SetTimeout(timeout_seconds_);