Fix #1551

httplib.h

@@ -1450,6 +1450,11 @@ public:
   Result Delete(const std::string &path, const Headers &headers,
                 const std::string &body, const std::string &content_type,
                 Progress progress);
+  Result Delete(const std::string &path, const Params &params);
+  Result Delete(const std::string &path, const Headers &headers,
+                const Params &params);
+  Result Delete(const std::string &path, const Headers &headers,
+                const Params &params, Progress progress);
 
   Result Options(const std::string &path);
   Result Options(const std::string &path, const Headers &headers);
@@ -1894,6 +1899,11 @@ public:
   Result Delete(const std::string &path, const Headers &headers,
                 const std::string &body, const std::string &content_type,
                 Progress progress);
+  Result Delete(const std::string &path, const Params &params);
+  Result Delete(const std::string &path, const Headers &headers,
+                const Params &params);
+  Result Delete(const std::string &path, const Headers &headers,
+                const Params &params, Progress progress);
 
   Result Options(const std::string &path);
   Result Options(const std::string &path, const Headers &headers);
@@ -9172,6 +9182,23 @@ inline Result ClientImpl::Delete(const std::string &path,
                 progress);
 }
 
+inline Result ClientImpl::Delete(const std::string &path, const Params &params) {
+  return Delete(path, Headers(), params);
+}
+
+inline Result ClientImpl::Delete(const std::string &path, const Headers &headers,
+                                 const Params &params) {
+  auto query = detail::params_to_query_str(params);
+  return Delete(path, headers, query, "application/x-www-form-urlencoded");
+}
+
+inline Result ClientImpl::Delete(const std::string &path, const Headers &headers,
+                                 const Params &params, Progress progress) {
+  auto query = detail::params_to_query_str(params);
+  return Delete(path, headers, query, "application/x-www-form-urlencoded",
+                progress);
+}
+
 inline Result ClientImpl::Options(const std::string &path) {
   return Options(path, Headers());
 }
@@ -10627,6 +10654,17 @@ inline Result Client::Delete(const std::string &path, const Headers &headers,
                              Progress progress) {
   return cli_->Delete(path, headers, body, content_type, progress);
 }
+inline Result Client::Delete(const std::string &path, const Params &params) {
+  return cli_->Delete(path, params);
+}
+inline Result Client::Delete(const std::string &path, const Headers &headers,
+                             const Params &params) {
+  return cli_->Delete(path, headers, params);
+}
+inline Result Client::Delete(const std::string &path, const Headers &headers,
+                             const Params &params, Progress progress) {
+  return cli_->Delete(path, headers, params, progress);
+}
 inline Result Client::Options(const std::string &path) {
   return cli_->Options(path);
 }

test/test.cc

@@ -2850,6 +2850,20 @@ protected:
                  res.status = StatusCode::NotFound_404;
                }
              })
+        .Delete("/person",
+                [&](const Request &req, Response &res) {
+                  if (req.has_param("name")) {
+                    string name = req.get_param_value("name");
+                    if (persons_.find(name) != persons_.end()) {
+                      persons_.erase(name);
+                      res.set_content("DELETED", "text/plain");
+                    } else {
+                      res.status = StatusCode::NotFound_404;
+                    }
+                  } else {
+                    res.status = StatusCode::BadRequest_400;
+                  }
+                })
         .Post("/x-www-form-urlencoded-json",
               [&](const Request &req, Response &res) {
                 auto json = req.get_param_value("json");
@@ -3562,6 +3576,108 @@ TEST_F(ServerTest, PutMethod3) {
   ASSERT_EQ("coder", res->body);
 }
 
+TEST_F(ServerTest, DeleteMethod1) {
+  auto res = cli_.Get("/person/john4");
+  ASSERT_TRUE(res);
+  ASSERT_EQ(StatusCode::NotFound_404, res->status);
+
+  Params params;
+  params.emplace("name", "john4");
+  params.emplace("note", "coder");
+
+  res = cli_.Post("/person", params);
+  ASSERT_TRUE(res);
+  ASSERT_EQ(StatusCode::OK_200, res->status);
+
+  res = cli_.Get("/person/john4");
+  ASSERT_TRUE(res);
+  ASSERT_EQ(StatusCode::OK_200, res->status);
+  ASSERT_EQ("text/plain", res->get_header_value("Content-Type"));
+  ASSERT_EQ("coder", res->body);
+
+  Params delete_params;
+  delete_params.emplace("name", "john4");
+
+  res = cli_.Delete("/person", delete_params);
+  ASSERT_TRUE(res);
+  ASSERT_EQ(StatusCode::OK_200, res->status);
+  ASSERT_EQ("DELETED", res->body);
+
+  res = cli_.Get("/person/john4");
+  ASSERT_TRUE(res);
+  ASSERT_EQ(StatusCode::NotFound_404, res->status);
+}
+
+TEST_F(ServerTest, DeleteMethod2) {
+  auto res = cli_.Get("/person/john5");
+  ASSERT_TRUE(res);
+  ASSERT_EQ(StatusCode::NotFound_404, res->status);
+
+  Params params;
+  params.emplace("name", "john5");
+  params.emplace("note", "developer");
+
+  res = cli_.Post("/person", params);
+  ASSERT_TRUE(res);
+  ASSERT_EQ(StatusCode::OK_200, res->status);
+
+  res = cli_.Get("/person/john5");
+  ASSERT_TRUE(res);
+  ASSERT_EQ(StatusCode::OK_200, res->status);
+  ASSERT_EQ("text/plain", res->get_header_value("Content-Type"));
+  ASSERT_EQ("developer", res->body);
+
+  Params delete_params;
+  delete_params.emplace("name", "john5");
+
+  Headers headers;
+  headers.emplace("Custom-Header", "test-value");
+
+  res = cli_.Delete("/person", headers, delete_params);
+  ASSERT_TRUE(res);
+  ASSERT_EQ(StatusCode::OK_200, res->status);
+  ASSERT_EQ("DELETED", res->body);
+
+  res = cli_.Get("/person/john5");
+  ASSERT_TRUE(res);
+  ASSERT_EQ(StatusCode::NotFound_404, res->status);
+}
+
+TEST_F(ServerTest, DeleteMethod3) {
+  auto res = cli_.Get("/person/john6");
+  ASSERT_TRUE(res);
+  ASSERT_EQ(StatusCode::NotFound_404, res->status);
+
+  Params params;
+  params.emplace("name", "john6");
+  params.emplace("note", "tester");
+
+  res = cli_.Post("/person", params);
+  ASSERT_TRUE(res);
+  ASSERT_EQ(StatusCode::OK_200, res->status);
+
+  res = cli_.Get("/person/john6");
+  ASSERT_TRUE(res);
+  ASSERT_EQ(StatusCode::OK_200, res->status);
+  ASSERT_EQ("text/plain", res->get_header_value("Content-Type"));
+  ASSERT_EQ("tester", res->body);
+
+  Params delete_params;
+  delete_params.emplace("name", "john6");
+
+  Headers headers;
+  headers.emplace("Custom-Header", "test-value");
+
+  res = cli_.Delete("/person", headers, delete_params, nullptr);
+  ASSERT_TRUE(res);
+  ASSERT_EQ(StatusCode::OK_200, res->status);
+  ASSERT_EQ("DELETED", res->body);
+
+  res = cli_.Get("/person/john6");
+  ASSERT_TRUE(res);
+  ASSERT_EQ(StatusCode::NotFound_404, res->status);
+}
+
 TEST_F(ServerTest, PostWwwFormUrlEncodedJson) {
   Params params;
   params.emplace("json", JSON_DATA);