diff --git a/ixwebsocket/IXHttpClient.cpp b/ixwebsocket/IXHttpClient.cpp
index cda2dd2a..ae661b9c 100644
--- a/ixwebsocket/IXHttpClient.cpp
+++ b/ixwebsocket/IXHttpClient.cpp
@@ -13,6 +13,7 @@
 #include <iomanip>
 #include <vector>
 #include <cstring>
+#include <iostream>
 
 #include <zlib.h>
 
@@ -24,17 +25,87 @@ namespace ix
     const std::string HttpClient::kDel = "DEL";
     const std::string HttpClient::kPut = "PUT";
 
-    HttpClient::HttpClient()
+    HttpClient::HttpClient(bool async) : _async(async), _stop(false)
     {
+        if (!_async) return;
 
+        _thread = std::thread(&HttpClient::run, this);
     }
 
     HttpClient::~HttpClient()
     {
+        if (!_thread.joinable()) return;
 
+        _stop = true;
+        _condition.notify_one();
+        _thread.join();
     }
 
-    HttpResponse HttpClient::request(
+    HttpRequestArgsPtr HttpClient::createRequest(const std::string& url,
+                                                 const std::string& verb)
+    {
+        auto request = std::make_shared<HttpRequestArgs>();
+        request->url = url;
+        request->verb = verb;
+        return request;
+    }
+
+    bool HttpClient::performRequest(HttpRequestArgsPtr args,
+                                    const OnResponseCallback& onResponseCallback)
+    {
+        if (!_async) return false;
+
+        // Enqueue the task
+        {
+            // acquire lock
+            std::unique_lock<std::mutex> lock(_queueMutex);
+
+            // add the task
+            _queue.push(std::make_pair(args, onResponseCallback));
+        } // release lock
+
+        // wake up one thread
+        _condition.notify_one();
+
+        return true;
+    }
+
+    void HttpClient::run()
+    {
+        while (true)
+        {
+            HttpRequestArgsPtr args;
+            OnResponseCallback onResponseCallback;
+
+            {
+                std::unique_lock<std::mutex> lock(_queueMutex);
+
+                while (!_stop && _queue.empty())
+                {
+                    _condition.wait(lock);
+                }
+
+                if (_stop) return;
+
+                auto p = _queue.front();
+                _queue.pop();
+
+                args = p.first;
+                onResponseCallback = p.second;
+            }
+
+            if (_stop) return;
+
+            HttpResponsePtr response = request(args->url, args->verb, args->body, *args);
+            onResponseCallback(response);
+
+            if (_stop) return;
+        }
+
+        std::cout << "HttpClient::run() finished" << std::endl;
+    }
+
+    HttpResponsePtr HttpClient::request(
         const std::string& url,
         const std::string& verb,
         const std::string& body,
@@ -54,7 +125,7 @@ namespace ix
         {
             std::stringstream ss;
             ss << "Cannot parse url: " << url;
-            return HttpResponse(code, HttpErrorCode::UrlMalformed,
+            return std::make_shared<HttpResponse>(code, HttpErrorCode::UrlMalformed,
                                 headers, payload, ss.str(),
                                 uploadSize, downloadSize);
         }
@@ -65,7 +136,7 @@ namespace ix
 
         if (!_socket)
         {
-            return HttpResponse(code, HttpErrorCode::CannotCreateSocket,
+            return std::make_shared<HttpResponse>(code, HttpErrorCode::CannotCreateSocket,
                                 headers, payload, errorMsg,
                                 uploadSize, downloadSize);
         }
@@ -128,9 +199,9 @@ namespace ix
         {
             std::stringstream ss;
             ss << "Cannot connect to url: " << url << " / error : " << errMsg;
-            return HttpResponse(code, HttpErrorCode::CannotConnect,
-                                headers, payload, ss.str(),
-                                uploadSize, downloadSize);
+            return std::make_shared<HttpResponse>(code, HttpErrorCode::CannotConnect,
+                                                  headers, payload, ss.str(),
+                                                  uploadSize, downloadSize);
         }
 
         // Make a new cancellation object dealing with transfer timeout
@@ -154,9 +225,9 @@ namespace ix
         if (!_socket->writeBytes(req, isCancellationRequested))
         {
             std::string errorMsg("Cannot send request");
-            return HttpResponse(code, HttpErrorCode::SendError,
-                                headers, payload, errorMsg,
-                                uploadSize, downloadSize);
+            return std::make_shared<HttpResponse>(code, HttpErrorCode::SendError,
+                                                  headers, payload, errorMsg,
+                                                  uploadSize, downloadSize);
         }
 
         uploadSize = req.size();
@@ -168,9 +239,9 @@ namespace ix
         if (!lineValid)
         {
             std::string errorMsg("Cannot retrieve status line");
-            return HttpResponse(code, HttpErrorCode::CannotReadStatusLine,
-                                headers, payload, errorMsg,
-                                uploadSize, downloadSize);
+            return std::make_shared<HttpResponse>(code, HttpErrorCode::CannotReadStatusLine,
+                                                  headers, payload, errorMsg,
+                                                  uploadSize, downloadSize);
         }
 
         if (args.verbose)
@@ -183,9 +254,9 @@ namespace ix
         if (sscanf(line.c_str(), "HTTP/1.1 %d", &code) != 1)
         {
             std::string errorMsg("Cannot parse response code from status line");
-            return HttpResponse(code, HttpErrorCode::MissingStatus,
-                                headers, payload, errorMsg,
-                                uploadSize, downloadSize);
+            return std::make_shared<HttpResponse>(code, HttpErrorCode::MissingStatus,
+                                                  headers, payload, errorMsg,
+                                                  uploadSize, downloadSize);
         }
 
         auto result = parseHttpHeaders(_socket, isCancellationRequested);
@@ -195,9 +266,9 @@ namespace ix
         if (!headersValid)
         {
             std::string errorMsg("Cannot parse http headers");
-            return HttpResponse(code, HttpErrorCode::HeaderParsingError,
-                                headers, payload, errorMsg,
-                                uploadSize, downloadSize);
+            return std::make_shared<HttpResponse>(code, HttpErrorCode::HeaderParsingError,
+                                                  headers, payload, errorMsg,
+                                                  uploadSize, downloadSize);
         }
 
         // Redirect ?
@@ -206,18 +277,18 @@ namespace ix
             if (headers.find("Location") == headers.end())
             {
                 std::string errorMsg("Missing location header for redirect");
-                return HttpResponse(code, HttpErrorCode::MissingLocation,
-                                    headers, payload, errorMsg,
-                                    uploadSize, downloadSize);
+                return std::make_shared<HttpResponse>(code, HttpErrorCode::MissingLocation,
+                                                      headers, payload, errorMsg,
+                                                      uploadSize, downloadSize);
             }
 
             if (redirects >= args.maxRedirects)
             {
                 std::stringstream ss;
                 ss << "Too many redirects: " << redirects;
-                return HttpResponse(code, HttpErrorCode::TooManyRedirects,
-                                    headers, payload, ss.str(),
-                                    uploadSize, downloadSize);
+                return std::make_shared<HttpResponse>(code, HttpErrorCode::TooManyRedirects,
+                                                      headers, payload, ss.str(),
+                                                      uploadSize, downloadSize);
             }
 
             // Recurse
@@ -227,9 +298,9 @@ namespace ix
 
         if (verb == "HEAD")
         {
-            return HttpResponse(code, HttpErrorCode::Ok,
-                                headers, payload, std::string(),
-                                uploadSize, downloadSize);
+            return std::make_shared<HttpResponse>(code, HttpErrorCode::Ok,
+                                                  headers, payload, std::string(),
+                                                  uploadSize, downloadSize);
         }
 
         // Parse response:
@@ -248,9 +319,9 @@ namespace ix
             if (!chunkResult.first)
             {
                 errorMsg = "Cannot read chunk";
-                return HttpResponse(code, HttpErrorCode::ChunkReadError,
-                                    headers, payload, errorMsg,
-                                    uploadSize, downloadSize);
+                return std::make_shared<HttpResponse>(code, HttpErrorCode::ChunkReadError,
+                                                      headers, payload, errorMsg,
+                                                      uploadSize, downloadSize);
             }
             payload += chunkResult.second;
         }
@@ -266,9 +337,9 @@ namespace ix
 
                 if (!lineResult.first)
                 {
-                    return HttpResponse(code, HttpErrorCode::ChunkReadError,
-                                        headers, payload, errorMsg,
-                                        uploadSize, downloadSize);
+                    return std::make_shared<HttpResponse>(code, HttpErrorCode::ChunkReadError,
+                                                          headers, payload, errorMsg,
+                                                          uploadSize, downloadSize);
                 }
 
                 uint64_t chunkSize;
@@ -293,9 +364,9 @@ namespace ix
                 if (!chunkResult.first)
                 {
                     errorMsg = "Cannot read chunk";
-                    return HttpResponse(code, HttpErrorCode::ChunkReadError,
-                                        headers, payload, errorMsg,
-                                        uploadSize, downloadSize);
+                    return std::make_shared<HttpResponse>(code, HttpErrorCode::ChunkReadError,
+                                                          headers, payload, errorMsg,
+                                                          uploadSize, downloadSize);
                 }
                 payload += chunkResult.second;
 
@@ -304,9 +375,9 @@ namespace ix
 
                 if (!lineResult.first)
                 {
-                    return HttpResponse(code, HttpErrorCode::ChunkReadError,
-                                        headers, payload, errorMsg,
-                                        uploadSize, downloadSize);
+                    return std::make_shared<HttpResponse>(code, HttpErrorCode::ChunkReadError,
+                                                          headers, payload, errorMsg,
+                                                          uploadSize, downloadSize);
                 }
 
                 if (chunkSize == 0) break;
@@ -319,9 +390,9 @@ namespace ix
         else
         {
             std::string errorMsg("Cannot read http body");
-            return HttpResponse(code, HttpErrorCode::CannotReadBody,
-                                headers, payload, errorMsg,
-                                uploadSize, downloadSize);
+            return std::make_shared<HttpResponse>(code, HttpErrorCode::CannotReadBody,
+                                                  headers, payload, errorMsg,
+                                                  uploadSize, downloadSize);
         }
 
         downloadSize = payload.size();
@@ -333,58 +404,58 @@ namespace ix
             if (!gzipInflate(payload, decompressedPayload))
             {
                 std::string errorMsg("Error decompressing payload");
-                return HttpResponse(code, HttpErrorCode::Gzip,
-                                    headers, payload, errorMsg,
-                                    uploadSize, downloadSize);
+                return std::make_shared<HttpResponse>(code, HttpErrorCode::Gzip,
+                                                      headers, payload, errorMsg,
+                                                      uploadSize, downloadSize);
             }
             payload = decompressedPayload;
         }
 
-        return HttpResponse(code, HttpErrorCode::Ok,
-                            headers, payload, std::string(),
-                            uploadSize, downloadSize);
+        return std::make_shared<HttpResponse>(code, HttpErrorCode::Ok,
+                                              headers, payload, std::string(),
+                                              uploadSize, downloadSize);
     }
 
-    HttpResponse HttpClient::get(const std::string& url,
+    HttpResponsePtr HttpClient::get(const std::string& url,
                                  const HttpRequestArgs& args)
     {
         return request(url, kGet, std::string(), args);
     }
 
-    HttpResponse HttpClient::head(const std::string& url,
+    HttpResponsePtr HttpClient::head(const std::string& url,
                                   const HttpRequestArgs& args)
     {
         return request(url, kHead, std::string(), args);
     }
 
-    HttpResponse HttpClient::del(const std::string& url,
+    HttpResponsePtr HttpClient::del(const std::string& url,
                                  const HttpRequestArgs& args)
     {
         return request(url, kDel, std::string(), args);
     }
 
-    HttpResponse HttpClient::post(const std::string& url,
+    HttpResponsePtr HttpClient::post(const std::string& url,
                                   const HttpParameters& httpParameters,
                                   const HttpRequestArgs& args)
     {
         return request(url, kPost, serializeHttpParameters(httpParameters), args);
     }
 
-    HttpResponse HttpClient::post(const std::string& url,
+    HttpResponsePtr HttpClient::post(const std::string& url,
                                   const std::string& body,
                                   const HttpRequestArgs& args)
     {
         return request(url, kPost, body, args);
     }
 
-    HttpResponse HttpClient::put(const std::string& url,
+    HttpResponsePtr HttpClient::put(const std::string& url,
                                  const HttpParameters& httpParameters,
                                  const HttpRequestArgs& args)
     {
         return request(url, kPut, serializeHttpParameters(httpParameters), args);
     }
 
-    HttpResponse HttpClient::put(const std::string& url,
+    HttpResponsePtr HttpClient::put(const std::string& url,
                                  const std::string& body,
                                  const HttpRequestArgs& args)
     {
diff --git a/ixwebsocket/IXHttpClient.h b/ixwebsocket/IXHttpClient.h
index ccaed27a..a41a0a06 100644
--- a/ixwebsocket/IXHttpClient.h
+++ b/ixwebsocket/IXHttpClient.h
@@ -10,11 +10,13 @@
 #include "IXWebSocketHttpHeaders.h"
 #include <algorithm>
 #include <atomic>
+#include <condition_variable>
 #include <functional>
 #include <map>
 #include <memory>
 #include <mutex>
-#include <tuple>
+#include <queue>
+#include <thread>
 
 namespace ix
 {
@@ -34,7 +36,8 @@ namespace ix
         MissingLocation = 11,
         TooManyRedirects = 12,
         ChunkReadError = 13,
-        CannotReadBody = 14
+        CannotReadBody = 14,
+        Invalid = 100
     };
 
     struct HttpResponse
@@ -66,12 +69,15 @@ namespace ix
         }
     };
 
+    using HttpResponsePtr = std::shared_ptr<HttpResponse>;
     using HttpParameters = std::map<std::string, std::string>;
     using Logger = std::function<void(const std::string&)>;
+    using OnResponseCallback = std::function<void(const HttpResponsePtr&)>;
 
     struct HttpRequestArgs
     {
         std::string url;
+        std::string verb;
         WebSocketHttpHeaders extraHeaders;
         std::string body;
         int connectTimeout;
@@ -84,51 +90,71 @@ namespace ix
         OnProgressCallback onProgressCallback;
     };
 
+    using HttpRequestArgsPtr = std::shared_ptr<HttpRequestArgs>;
+
     class HttpClient
     {
     public:
-        HttpClient();
+        HttpClient(bool async = false);
         ~HttpClient();
 
-        HttpResponse get(const std::string& url, const HttpRequestArgs& args);
-        HttpResponse head(const std::string& url, const HttpRequestArgs& args);
-        HttpResponse del(const std::string& url, const HttpRequestArgs& args);
+        HttpResponsePtr get(const std::string& url, const HttpRequestArgs& args);
+        HttpResponsePtr head(const std::string& url, const HttpRequestArgs& args);
+        HttpResponsePtr del(const std::string& url, const HttpRequestArgs& args);
 
-        HttpResponse post(const std::string& url,
-                          const HttpParameters& httpParameters,
-                          const HttpRequestArgs& args);
-        HttpResponse post(const std::string& url,
-                          const std::string& body,
-                          const HttpRequestArgs& args);
-
-        HttpResponse put(const std::string& url,
-                         const HttpParameters& httpParameters,
-                         const HttpRequestArgs& args);
-        HttpResponse put(const std::string& url,
-                         const std::string& body,
-                         const HttpRequestArgs& args);
-
-        HttpResponse request(const std::string& url,
-                             const std::string& verb,
+        HttpResponsePtr post(const std::string& url,
+                             const HttpParameters& httpParameters,
+                             const HttpRequestArgs& args);
+        HttpResponsePtr post(const std::string& url,
                              const std::string& body,
-                             const HttpRequestArgs& args,
-                             int redirects = 0);
+                             const HttpRequestArgs& args);
+
+        HttpResponsePtr put(const std::string& url,
+                            const HttpParameters& httpParameters,
+                            const HttpRequestArgs& args);
+        HttpResponsePtr put(const std::string& url,
+                            const std::string& body,
+                            const HttpRequestArgs& args);
+
+        HttpResponsePtr request(const std::string& url,
+                                const std::string& verb,
+                                const std::string& body,
+                                const HttpRequestArgs& args,
+                                int redirects = 0);
+
+        // Async API
+        HttpRequestArgsPtr createRequest(const std::string& url,
+                                         const std::string& verb = HttpClient::kGet);
+
+        bool performRequest(HttpRequestArgsPtr request,
+                            const OnResponseCallback& onResponseCallback);
 
         std::string serializeHttpParameters(const HttpParameters& httpParameters);
 
         std::string urlEncode(const std::string& value);
 
-    private:
-        void log(const std::string& msg, const HttpRequestArgs& args);
-
-        bool gzipInflate(const std::string& in, std::string& out);
-
-        std::shared_ptr<Socket> _socket;
-
         const static std::string kPost;
         const static std::string kGet;
         const static std::string kHead;
         const static std::string kDel;
         const static std::string kPut;
+
+    private:
+        void log(const std::string& msg, const HttpRequestArgs& args);
+
+        bool gzipInflate(const std::string& in, std::string& out);
+
+        // Async API background thread runner
+        void run();
+
+        // Async API
+        bool _async;
+        std::queue<std::pair<HttpRequestArgsPtr, OnResponseCallback>> _queue;
+        mutable std::mutex _queueMutex;
+        std::condition_variable _condition;
+        std::atomic<bool> _stop;
+        std::thread _thread;
+
+        std::shared_ptr<Socket> _socket;
     };
 } // namespace ix
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 31a9867d..17bd0035 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -10,8 +10,8 @@ set (CMAKE_CXX_STANDARD 14)
 if (NOT WIN32)
   set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/../third_party/sanitizers-cmake/cmake" ${CMAKE_MODULE_PATH})
   find_package(Sanitizers)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=thread")
-  set(CMAKE_LD_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=thread")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address")
+  set(CMAKE_LD_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address")
   option(USE_TLS "Add TLS support" ON)
 endif()
 
diff --git a/test/IXHttpClientTest.cpp b/test/IXHttpClientTest.cpp
index 2c2875aa..c7cdbc82 100644
--- a/test/IXHttpClientTest.cpp
+++ b/test/IXHttpClientTest.cpp
@@ -18,7 +18,6 @@ TEST_CASE("http client", "[http]")
         std::string url("http://httpbin.org/");
 
         WebSocketHttpHeaders headers;
-        headers["User-Agent"] = "ixwebsocket";
 
         HttpRequestArgs args;
         args.extraHeaders = headers;
@@ -40,27 +39,26 @@ TEST_CASE("http client", "[http]")
         };
 
         HttpClient httpClient;
-        HttpResponse response = httpClient.get(url, args);
+        auto response = httpClient.get(url, args);
 
-        for (auto it : response.headers)
+        for (auto it : response->headers)
         {
             std::cerr << it.first << ": " << it.second << std::endl;
         }
 
-        std::cerr << "Upload size: " << response.uploadSize << std::endl;
-        std::cerr << "Download size: " << response.downloadSize << std::endl;
-        std::cerr << "Status: " << response.statusCode << std::endl;
+        std::cerr << "Upload size: " << response->uploadSize << std::endl;
+        std::cerr << "Download size: " << response->downloadSize << std::endl;
+        std::cerr << "Status: " << response->statusCode << std::endl;
 
-        REQUIRE(response.errorCode == HttpErrorCode::Ok);
+        REQUIRE(response->errorCode == HttpErrorCode::Ok);
+        REQUIRE(response->statusCode == 200);
     }
 
-#if defined(IXWEBSOCKET_USE_TLS)
     SECTION("Connect to a remote HTTPS server")
     {
         std::string url("https://httpbin.org/");
 
         WebSocketHttpHeaders headers;
-        headers["User-Agent"] = "ixwebsocket";
 
         HttpRequestArgs args;
         args.extraHeaders = headers;
@@ -82,18 +80,143 @@ TEST_CASE("http client", "[http]")
         };
 
         HttpClient httpClient;
-        HttpResponse response = httpClient.get(url, args);
+        auto response = httpClient.get(url, args);
 
-        for (auto it : response.headers)
+        for (auto it : response->headers)
         {
             std::cerr << it.first << ": " << it.second << std::endl;
         }
 
-        std::cerr << "Upload size: " << response.uploadSize << std::endl;
-        std::cerr << "Download size: " << response.downloadSize << std::endl;
-        std::cerr << "Status: " << response.statusCode << std::endl;
+        std::cerr << "Upload size: " << response->uploadSize << std::endl;
+        std::cerr << "Download size: " << response->downloadSize << std::endl;
+        std::cerr << "Status: " << response->statusCode << std::endl;
 
-        REQUIRE(response.errorCode == HttpErrorCode::Ok);
+        REQUIRE(response->errorCode == HttpErrorCode::Ok);
+        REQUIRE(response->statusCode == 200);
+    }
+
+    SECTION("Async API, one call")
+    {
+        bool async = true;
+        HttpClient httpClient(async);
+        WebSocketHttpHeaders headers;
+
+        std::string url("https://httpbin.org/");
+        auto args = httpClient.createRequest(url);
+
+        args->extraHeaders = headers;
+        args->connectTimeout = 60;
+        args->transferTimeout = 60;
+        args->followRedirects = true;
+        args->maxRedirects = 10;
+        args->verbose = true;
+        args->compress = true;
+        args->logger = [](const std::string& msg)
+        {
+            std::cout << msg;
+        };
+        args->onProgressCallback = [](int current, int total) -> bool
+        {
+            std::cerr << "\r" << "Downloaded "
+                      << current << " bytes out of " << total;
+            return true;
+        };
+
+        std::atomic<bool> requestCompleted(false);
+        std::atomic<int> statusCode(0);
+
+        httpClient.performRequest(args, [&requestCompleted, &statusCode]
+            (const HttpResponsePtr& response)
+            {
+                // In case of failure, print response->errorMsg
+                statusCode = response->statusCode;
+                requestCompleted = true;
+            }
+        );
+
+        int wait = 0;
+        while (wait < 5000)
+        {
+            if (requestCompleted) break;
+
+            std::chrono::duration<double, std::milli> duration(10);
+            std::this_thread::sleep_for(duration);
+            wait += 10;
+        }
+
+
+        std::cerr << "Done" << std::endl;
+        REQUIRE(statusCode == 200);
+    }
+
+    SECTION("Async API, multiple calls")
+    {
+        bool async = true;
+        HttpClient httpClient(async);
+        WebSocketHttpHeaders headers;
+
+        std::string url("http://httpbin.org/");
+        auto args = httpClient.createRequest(url);
+
+        args->extraHeaders = headers;
+        args->connectTimeout = 60;
+        args->transferTimeout = 60;
+        args->followRedirects = true;
+        args->maxRedirects = 10;
+        args->verbose = true;
+        args->compress = true;
+        args->logger = [](const std::string& msg)
+        {
+            std::cout << msg;
+        };
+        args->onProgressCallback = [](int current, int total) -> bool
+        {
+            std::cerr << "\r" << "Downloaded "
+                      << current << " bytes out of " << total;
+            return true;
+        };
+
+        std::atomic<bool> requestCompleted(false);
+        std::atomic<int> statusCode0(0);
+        std::atomic<int> statusCode1(0);
+        std::atomic<int> statusCode2(0);
+
+        for (int i = 0; i < 3; ++i)
+        {
+            httpClient.performRequest(args, [i, &requestCompleted, &statusCode0, &statusCode1, &statusCode2]
+                (const HttpResponsePtr& response)
+                {
+                    // In case of failure, print response->errorMsg
+                    if (i == 0)
+                    {
+                        statusCode0 = response->statusCode;
+                    }
+                    else if (i == 1)
+                    {
+                        statusCode1 = response->statusCode;
+                    }
+                    else if (i == 2)
+                    {
+                        statusCode2 = response->statusCode;
+                        requestCompleted = true;
+                    }
+                }
+            );
+        }
+
+        int wait = 0;
+        while (wait < 10000)
+        {
+            if (requestCompleted) break;
+
+            std::chrono::duration<double, std::milli> duration(10);
+            std::this_thread::sleep_for(duration);
+            wait += 10;
+        }
+
+        std::cerr << "Done" << std::endl;
+        REQUIRE(statusCode0 == 200);
+        REQUIRE(statusCode1 == 200);
+        REQUIRE(statusCode2 == 200);
     }
-#endif
 }
diff --git a/ws/ixcobra/IXCobraMetricsThreadedPublisher.cpp b/ws/ixcobra/IXCobraMetricsThreadedPublisher.cpp
index bf160cef..da12faaf 100644
--- a/ws/ixcobra/IXCobraMetricsThreadedPublisher.cpp
+++ b/ws/ixcobra/IXCobraMetricsThreadedPublisher.cpp
@@ -99,7 +99,7 @@ namespace ix
     void CobraMetricsThreadedPublisher::pushMessage(MessageKind messageKind,
                                                     const Json::Value& msg)
     {
-        // Now actually enqueue the task
+        // Enqueue the task
         {
             // acquire lock
             std::unique_lock<std::mutex> lock(_queue_mutex);
diff --git a/ws/ixcobra/IXCobraMetricsThreadedPublisher.h b/ws/ixcobra/IXCobraMetricsThreadedPublisher.h
index 55c17c59..50e6e398 100644
--- a/ws/ixcobra/IXCobraMetricsThreadedPublisher.h
+++ b/ws/ixcobra/IXCobraMetricsThreadedPublisher.h
@@ -25,7 +25,6 @@ namespace ix
         ~CobraMetricsThreadedPublisher();
 
         /// Configuration / set keys, etc...
-        /// All input data but the channel name is encrypted with rc4
         void configure(const std::string& appkey,
                        const std::string& endpoint,
                        const std::string& channel,
diff --git a/ws/ws_cobra_to_sentry.cpp b/ws/ws_cobra_to_sentry.cpp
index cef19864..75a206e6 100644
--- a/ws/ws_cobra_to_sentry.cpp
+++ b/ws/ws_cobra_to_sentry.cpp
@@ -46,9 +46,11 @@ namespace ix
         std::condition_variable progressCondition;
         std::queue<Json::Value> queue;
 
+        SentryClient sentryClient(dsn);
+
         auto sentrySender = [&condition, &progressCondition, &conditionVariableMutex,
                              &queue, verbose, &errorSending, &sentCount,
-                             &stop, &dsn]
+                             &stop, &sentryClient]
         {
             while (true)
             {
@@ -62,9 +64,7 @@ namespace ix
                     queue.pop();
                 }
 
-                SentryClient sc(dsn);
-
-                if (!sc.send(msg, verbose))
+                if (!sentryClient.send(msg, verbose))
                 {
                     errorSending = true;
                 }