diff --git a/Common/Net/HTTPClient.cpp b/Common/Net/HTTPClient.cpp
index 7ef0c15df1..82865e3410 100644
--- a/Common/Net/HTTPClient.cpp
+++ b/Common/Net/HTTPClient.cpp
@@ -458,8 +458,8 @@ int Client::ReadResponseEntity(net::Buffer *readbuf, const std::vector<std::stri
 	return 0;
 }
 
-Download::Download(const std::string &url, const Path &outfile)
-	: progress_(&cancelled_), url_(url), outfile_(outfile) {
+Download::Download(RequestMethod method, const std::string &url, const std::string &postData, const Path &outfile)
+	: method_(method), progress_(&cancelled_), url_(url), postData_(postData), outfile_(outfile) {
 }
 
 Download::~Download() {
@@ -484,7 +484,7 @@ void Download::SetFailed(int code) {
 	completed_ = true;
 }
 
-int Download::PerformGET(const std::string &url) {
+int Download::Perform(const std::string &url) {
 	Url fileUrl(url);
 	if (!fileUrl.Valid()) {
 		return -1;
@@ -533,7 +533,7 @@ void Download::Do() {
 
 	std::string downloadURL = url_;
 	while (resultCode_ == 0) {
-		int resultCode = PerformGET(downloadURL);
+		int resultCode = Perform(downloadURL);
 		if (resultCode == -1) {
 			SetFailed(resultCode);
 			return;
@@ -575,7 +575,7 @@ void Download::Do() {
 }
 
 std::shared_ptr<Download> Downloader::StartDownload(const std::string &url, const Path &outfile, const char *acceptMime) {
-	std::shared_ptr<Download> dl(new Download(url, outfile));
+	std::shared_ptr<Download> dl(new Download(RequestMethod::GET, url, "", outfile));
 	if (acceptMime)
 		dl->SetAccept(acceptMime);
 	downloads_.push_back(dl);
@@ -588,7 +588,7 @@ std::shared_ptr<Download> Downloader::StartDownloadWithCallback(
 	const Path &outfile,
 	std::function<void(Download &)> callback,
 	const char *acceptMime) {
-	std::shared_ptr<Download> dl(new Download(url, outfile));
+	std::shared_ptr<Download> dl(new Download(RequestMethod::GET, url, "", outfile));
 	if (acceptMime)
 		dl->SetAccept(acceptMime);
 	dl->SetCallback(callback);
@@ -597,6 +597,17 @@ std::shared_ptr<Download> Downloader::StartDownloadWithCallback(
 	return dl;
 }
 
+std::shared_ptr<Download> Downloader::AsyncPostWithCallback(
+	const std::string &url,
+	const std::string &postData,
+	std::function<void(Download &)> callback) {
+	std::shared_ptr<Download> dl(new Download(RequestMethod::POST, url, postData, Path()));
+	dl->SetCallback(callback);
+	downloads_.push_back(dl);
+	dl->Start();
+	return dl;
+}
+
 void Downloader::Update() {
 	restart:
 	for (size_t i = 0; i < downloads_.size(); i++) {
@@ -610,6 +621,13 @@ void Downloader::Update() {
 	}
 }
 
+void Downloader::WaitForAll() {
+	// TODO: Should lock? Though, OK if called from main thread, where Update() is called from.
+	while (!downloads_.empty()) {
+		sleep_ms(10);
+	}
+}
+
 std::vector<float> Downloader::GetCurrentProgress() {
 	std::vector<float> progress;
 	for (size_t i = 0; i < downloads_.size(); i++) {
diff --git a/Common/Net/HTTPClient.h b/Common/Net/HTTPClient.h
index cafe4b08c5..d156a18301 100644
--- a/Common/Net/HTTPClient.h
+++ b/Common/Net/HTTPClient.h
@@ -97,10 +97,15 @@ protected:
 	double dataTimeout_ = 900.0;
 };
 
-// Not particularly efficient, but hey - it's a background download, that's pretty cool :P
+enum class RequestMethod {
+	GET,
+	POST,
+};
+
+// Really an asynchronous request.
 class Download {
 public:
-	Download(const std::string &url, const Path &outfile);
+	Download(RequestMethod method, const std::string &url, const std::string &postData, const Path &outfile);
 	~Download();
 
 	void Start();
@@ -154,11 +159,13 @@ public:
 
 private:
 	void Do();  // Actually does the download. Runs on thread.
-	int PerformGET(const std::string &url);
+	int Perform(const std::string &url);
 	std::string RedirectLocation(const std::string &baseUrl);
 	void SetFailed(int code);
 
 	RequestProgress progress_;
+	RequestMethod method_;
+	std::string postData_;
 	Buffer buffer_;
 	std::vector<std::string> responseHeaders_;
 	std::string url_;
@@ -190,10 +197,17 @@ public:
 		std::function<void(Download &)> callback,
 		const char *acceptMime = nullptr);
 
+	std::shared_ptr<Download> AsyncPostWithCallback(
+		const std::string &url,
+		const std::string &postData,
+		std::function<void(Download &)> callback);
+
 	// Drops finished downloads from the list.
 	void Update();
 	void CancelAll();
 
+	void WaitForAll();
+
 	std::vector<float> GetCurrentProgress();
 
 private: