diff --git a/lib/downloader.cpp b/lib/downloader.cpp
index 592b60ef..7d9c39ef 100644
--- a/lib/downloader.cpp
+++ b/lib/downloader.cpp
@@ -64,8 +64,8 @@ namespace HTTP{
 
   Downloader::~Downloader(){S.close();}
 
-  /// Sends a request for the given URL, does no waiting.
-  void Downloader::doRequest(const HTTP::URL &link, const std::string &method, const std::string &body){
+  /// Prepares a request for the given URL, does not send anything
+  void Downloader::prepareRequest(const HTTP::URL &link, const std::string &method){
     if (!canRequest(link)){return;}
     bool needSSL = (link.protocol == "https");
     H.Clean();
@@ -131,12 +131,22 @@ namespace HTTP{
         H.SetHeader(it->first, it->second);
       }
     }
-
     nbLink = link;
-    H.SendRequest(getSocket(), body);
+  }
+
+  /// Sends a request for the given URL, does no waiting.
+  void Downloader::doRequest(const HTTP::URL &link, const std::string &method, const void * body, const size_t bodyLen){
+    prepareRequest(link, method);
+    H.sendRequest(getSocket(), body, bodyLen, false);
     H.Clean();
   }
 
+  /// Sends a request for the given URL, does no waiting.
+  void Downloader::doRequest(const HTTP::URL &link, const std::string &method, const std::string &body){
+    doRequest(link, method, body.data(), body.size());
+  }
+
+
   /// Do a HEAD request to download the HTTP headers only, returns true on success
   bool Downloader::head(const HTTP::URL &link, uint8_t maxRecursiveDepth){
     if (!canRequest(link)){return false;}
@@ -361,11 +371,15 @@ namespace HTTP{
   }
 
   bool Downloader::post(const HTTP::URL &link, const std::string &payload, bool sync, uint8_t maxRecursiveDepth){
+    return post(link, payload.data(), payload.size(), sync, maxRecursiveDepth);
+  }
+
+  bool Downloader::post(const HTTP::URL &link, const void * payload, const size_t payloadLen, bool sync, uint8_t maxRecursiveDepth){
     if (!canRequest(link)){return false;}
     size_t loop = retryCount; // max 5 attempts
     while (--loop){// loop while we are unsuccessful
       MEDIUM_MSG("Posting to %s (%zu/%" PRIu32 ")", link.getUrl().c_str(), retryCount - loop + 1, retryCount);
-      doRequest(link, "POST", payload);
+      doRequest(link, "POST", payload, payloadLen);
       // Not synced? Ignore the response and immediately return true.
       if (!sync){return true;}
       uint64_t reqTime = Util::bootSecs();
@@ -390,9 +404,9 @@ namespace HTTP{
             }
             if (!canContinue(link)){return false;}
             if (getStatusCode() >= 300 && getStatusCode() < 400){
-              return post(link.link(getHeader("Location")), payload, sync, --maxRecursiveDepth);
+              return post(link.link(getHeader("Location")), payload, payloadLen, sync, --maxRecursiveDepth);
             }else{
-              return post(link, payload, sync, --maxRecursiveDepth);
+              return post(link, payload, payloadLen, sync, --maxRecursiveDepth);
             }
           }
           return true; // Success!
diff --git a/lib/downloader.h b/lib/downloader.h
index 55c1c3d6..5f49ccdb 100644
--- a/lib/downloader.h
+++ b/lib/downloader.h
@@ -10,13 +10,17 @@ namespace HTTP{
     ~Downloader();
     std::string &data();
     const std::string &const_data() const;
-    void doRequest(const HTTP::URL &link, const std::string &method = "",
-                   const std::string &body = "");
+    void prepareRequest(const HTTP::URL &link, const std::string &method = "");
+    void doRequest(const HTTP::URL &link, const std::string &method = "", const void * body = 0, const size_t bodyLen = 0);
+    void doRequest(const HTTP::URL &link, const std::string &method, const std::string &body);
     bool get(const std::string &link, Util::DataCallback &cb = Util::defaultDataCallback);
     bool get(const HTTP::URL &link, uint8_t maxRecursiveDepth = 6, Util::DataCallback &cb = Util::defaultDataCallback);
-    bool head(const HTTP::URL &link,uint8_t maxRecursiveDepth = 6);
-    bool getRange(const HTTP::URL &link, size_t byteStart, size_t byteEnd, Util::DataCallback &cb = Util::defaultDataCallback);
-    bool getRangeNonBlocking(const HTTP::URL &link, size_t byteStart, size_t byteEnd, Util::DataCallback &cb = Util::defaultDataCallback);
+    bool head(const HTTP::URL &link, uint8_t maxRecursiveDepth = 6);
+    bool getRange(const HTTP::URL &link, size_t byteStart, size_t byteEnd,
+                  Util::DataCallback &cb = Util::defaultDataCallback);
+    bool getRangeNonBlocking(const HTTP::URL &link, size_t byteStart, size_t byteEnd,
+                             Util::DataCallback &cb = Util::defaultDataCallback);
+    bool post(const HTTP::URL &link, const void * payload, const size_t payloadLen, bool sync = true, uint8_t maxRecursiveDepth = 6);
     bool post(const HTTP::URL &link, const std::string &payload, bool sync = true,
               uint8_t maxRecursiveDepth = 6);
 
diff --git a/lib/http_parser.cpp b/lib/http_parser.cpp
index 8c6a79c4..222c474d 100644
--- a/lib/http_parser.cpp
+++ b/lib/http_parser.cpp
@@ -163,6 +163,10 @@ std::string &HTTP::Parser::BuildRequest(){
 /// The request is build from internal variables set before this call is made.
 /// To be precise, method, url, protocol, headers and body are used.
 void HTTP::Parser::SendRequest(Socket::Connection &conn, const std::string &reqbody, bool allAtOnce){
+  sendRequest(conn, reqbody.data(), reqbody.size(), allAtOnce);
+}
+
+void HTTP::Parser::sendRequest(Socket::Connection &conn, const void * reqbody, const size_t reqbodyLen, bool allAtOnce){
   /// \todo Include GET/POST variable parsing?
   if (allAtOnce){
     /// \TODO Make this less duplicated / more pretty.
@@ -170,15 +174,15 @@ void HTTP::Parser::SendRequest(Socket::Connection &conn, const std::string &reqb
     std::map<std::string, std::string>::iterator it;
     if (protocol.size() < 5 || protocol[4] != '/'){protocol = "HTTP/1.0";}
     builder = method + " " + url + " " + protocol + "\r\n";
-    if (reqbody.size()){SetHeader("Content-Length", reqbody.length());}
+    if (reqbodyLen){SetHeader("Content-Length", reqbodyLen);}
     for (it = headers.begin(); it != headers.end(); it++){
       if ((*it).first != "" && (*it).second != ""){
         builder += (*it).first + ": " + (*it).second + "\r\n";
       }
     }
     builder += "\r\n";
-    if (reqbody.size()){
-      builder += reqbody;
+    if (reqbodyLen){
+      builder += std::string((char*)reqbody, reqbodyLen);
     }else{
       builder += body;
     }
@@ -189,7 +193,7 @@ void HTTP::Parser::SendRequest(Socket::Connection &conn, const std::string &reqb
   if (protocol.size() < 5 || protocol[4] != '/'){protocol = "HTTP/1.0";}
   builder = method + " " + url + " " + protocol + "\r\n";
   conn.SendNow(builder);
-  if (reqbody.size()){SetHeader("Content-Length", reqbody.length());}
+  if (reqbodyLen){SetHeader("Content-Length", reqbodyLen);}
   for (it = headers.begin(); it != headers.end(); it++){
     if ((*it).first != "" && (*it).second != ""){
       builder = (*it).first + ": " + (*it).second + "\r\n";
@@ -197,8 +201,8 @@ void HTTP::Parser::SendRequest(Socket::Connection &conn, const std::string &reqb
     }
   }
   conn.SendNow("\r\n", 2);
-  if (reqbody.size()){
-    conn.SendNow(reqbody);
+  if (reqbodyLen){
+    conn.SendNow((char*)reqbody, reqbodyLen);
   }else{
     conn.SendNow(body);
   }
diff --git a/lib/http_parser.h b/lib/http_parser.h
index b35ee08d..bec9b1b8 100644
--- a/lib/http_parser.h
+++ b/lib/http_parser.h
@@ -39,6 +39,7 @@ namespace HTTP{
     std::string &BuildResponse();
     std::string &BuildResponse(std::string code, std::string message);
     void SendRequest(Socket::Connection &conn, const std::string &reqbody = "", bool allAtOnce = false);
+    void sendRequest(Socket::Connection &conn, const void * body = 0, const size_t bodyLen = 0, bool allAtOnce = false);
     void SendResponse(std::string code, std::string message, Socket::Connection &conn);
     void StartResponse(std::string code, std::string message, Parser &request,
                        Socket::Connection &conn, bool bufferAllChunks = false);