Better onFail handling, better HTTP failure handling

src/output/output.cpp

@@ -130,8 +130,12 @@ namespace Mist{
   /// Called when stream initialization has failed.
   /// The standard implementation will set isInitialized to false and close the client connection,
   /// thus causing the process to exit cleanly.
-  void Output::onFail(){
-    MEDIUM_MSG("onFail");
+  void Output::onFail(const std::string & msg, bool critical){
+    if (critical){
+      FAIL_MSG("onFail '%s': %s", streamName.c_str(), msg.c_str());
+    }else{
+      MEDIUM_MSG("onFail '%s': %s", streamName.c_str(), msg.c_str());
+    }
     isInitialized = false;
     wantRequest = true;
     parseData= false;
@@ -153,7 +157,7 @@ namespace Mist{
     reconnect();
     //if the connection failed, fail
     if (streamName.size() < 1){
-      onFail();
+      onFail("Could not connect to stream", true);
       return;
     }
     sought = false;
@@ -216,14 +220,12 @@ namespace Mist{
     if (config->hasOption("noinput") && config->getBool("noinput")){
       Util::sanitizeName(streamName);
       if (!Util::streamAlive(streamName)){
-        FAIL_MSG("Stream %s not already active - aborting initialization", streamName.c_str());
-        onFail();
+        onFail("Stream not active already, aborting");
         return;
       }
     }else{
       if (!Util::startInput(streamName, "", true, isPushing())){
-        FAIL_MSG("Opening stream %s failed - aborting initialization", streamName.c_str());
-        onFail();
+        onFail("Stream open failed", true);
         return;
       }
     }
@@ -236,16 +238,14 @@ namespace Mist{
       nProxy.userClient = IPC::sharedClient(userPageName, PLAY_EX_SIZE, true);
     }
     if (!nProxy.userClient.isAlive()){
-      FAIL_MSG("Could not register as client for %s", streamName.c_str());
-      onFail();
+      onFail("Could not register as client", true);
       return;
     }
     char pageId[NAME_BUFFER_SIZE];
     snprintf(pageId, NAME_BUFFER_SIZE, SHM_STREAM_INDEX, streamName.c_str());
     nProxy.metaPages[0].init(pageId, DEFAULT_STRM_PAGE_SIZE);
     if (!nProxy.metaPages[0].mapped){
-      FAIL_MSG("Could not connect to data for %s", streamName.c_str());
-      onFail();
+      onFail("Could not connect to stream data", true);
       return;
     }
     isInitialized = true;
@@ -1173,12 +1173,7 @@ namespace Mist{
       snprintf(userPageName, NAME_BUFFER_SIZE, SHM_USERS, streamName.c_str());
       nProxy.userClient = IPC::sharedClient(userPageName, PLAY_EX_SIZE, true);
       if (!nProxy.userClient.getData()){
-        WARN_MSG("Player connection failure - aborting output");
-        if (!onFinish()){
-          myConn.close();
-        }else{
-          disconnect();
-        }
+        onFail("Player connection failure - aborting output", true);
         return;
       }
     }
@@ -1186,21 +1181,11 @@ namespace Mist{
       if (isPushing() && !pushIsOngoing){
         waitForStreamPushReady();
         if (!nProxy.userClient.isAlive()){
-          WARN_MSG("Failed to wait for buffer, aborting incoming push");
-          if (!onFinish()){
-            myConn.close();
-          }else{
-            disconnect();
-          }
+          onFail("Failed to wait for buffer, aborting incoming push", true);
           return;
         }
       }else{
-        INFO_MSG("Received disconnect request from input");
-        if (!onFinish()){
-          myConn.close();
-        }else{
-          disconnect();
-        }
+        onFail("Received disconnect request from input");
         return;
       }
     }

src/output/output.h

@@ -73,7 +73,7 @@ namespace Mist {
       void disconnect();
       virtual void initialize();
       virtual void sendHeader();
-      virtual void onFail();
+      virtual void onFail(const std::string & msg, bool critical = false);
       virtual void requestHandler();
       static Util::Config * config;
       void playbackSleep(uint64_t millis);

src/output/output_hls.cpp

@@ -197,7 +197,7 @@ namespace Mist {
     }
     
     if (H.url.find("hls") == std::string::npos){
-      onFail();
+      onFail("HLS handler active, but this is not a HLS URL. Eh... What...?");
       return;
     }
     
@@ -213,11 +213,7 @@ namespace Mist {
     }
 
     initialize();
-
-    if (!keepGoing()){
-      onFail();
-      return;
-    }
+    if (!keepGoing()){return;}
 
     if (H.url.find(".m3u") == std::string::npos){
       std::string tmpStr = H.getUrl().substr(5 + streamName.size());

src/output/output_http.cpp

@@ -39,13 +39,14 @@ namespace Mist {
     config = cfg;
   }
   
-  void HTTPOutput::onFail(){
+  void HTTPOutput::onFail(const std::string & msg, bool critical){
+    INFO_MSG("Failing '%s': %s: %s", streamName.c_str(), H.url.c_str(), msg.c_str());
     if (!webSock){
       H.Clean(); //make sure no parts of old requests are left in any buffers
-      H.SetBody("Stream not found. Sorry, we tried.");
-      H.SendResponse("404", "Stream not found", myConn);
+      H.SetBody("Could not retrieve stream: "+msg);
+      H.SendResponse("404", "Error opening stream", myConn);
     }
-    Output::onFail();
+    Output::onFail(msg, critical);
   }
   
   bool isMatch(const std::string & url, const std::string & m, std::string & streamname){

src/output/output_http.h

@@ -12,7 +12,7 @@ namespace Mist {
       virtual ~HTTPOutput();
       static void init(Util::Config * cfg);
       void onRequest();
-      virtual void onFail();
+      virtual void onFail(const std::string & msg, bool critical = false);
       virtual void onHTTP(){};
       virtual void onIdle(){};
       virtual void onWebsocketFrame(){};

src/output/output_http_internal.cpp

@@ -60,7 +60,7 @@ namespace Mist {
     return !(config->getString("ip").size());
   }
   
-  void OutHTTP::onFail(){
+  void OutHTTP::onFail(const std::string & msg, bool critical){
     std::string method = H.method;
     // send logo icon
     if (H.url.length() > 4 && H.url.substr(H.url.length() - 4, 4) == ".ico"){
@@ -75,6 +75,7 @@ namespace Mist {
       if (websocketHandler()){return;}
       JSON::Value json_resp;
       json_resp["error"] = "Could not retrieve stream. Sorry.";
+      json_resp["error_guru"] = msg;
       if (H.url.size() >= 5 && H.url.substr(0, 5) == "/json"){
         H.Clean();
         H.SetBody(json_resp.toString());
@@ -92,9 +93,7 @@ namespace Mist {
       H.Clean();
       return;
     }
-    INFO_MSG("Failing: %s", H.url.c_str());
-    HTTPOutput::onFail();
-    Output::onFail();
+    HTTPOutput::onFail(msg, critical);
   }
 
   void OutHTTP::init(Util::Config * cfg){

src/output/output_http_internal.h

@@ -8,7 +8,7 @@ namespace Mist {
       ~OutHTTP();
       static void init(Util::Config * cfg);
       static bool listenMode();
-      virtual void onFail();
+      virtual void onFail(const std::string & msg, bool critical = false);
       ///preHTTP is disabled in the internal HTTP output, since most don't need the stream alive to work
       virtual void preHTTP(){};
       void HTMLResponse();

src/output/output_json.cpp

@@ -81,10 +81,10 @@ namespace Mist {
     sentHeader = true;
   }
   
-  void OutJSON::onFail(){
+  void OutJSON::onFail(const std::string & msg, bool critical){
     //Only run failure handle if we're not being persistent
     if (!keepReselecting){
-      HTTPOutput::onFail();
+      HTTPOutput::onFail(msg, critical);
     }else{
       onFinish();
     }

src/output/output_json.h

@@ -12,7 +12,7 @@ namespace Mist {
       virtual void onWebsocketConnect();
       virtual void preWebsocketConnect();
       bool onFinish();
-      void onFail();
+      void onFail(const std::string & msg, bool critical = false);
       void sendNext();
       void sendHeader();
       bool doesWebsockets(){return true;}