Added SMUX reconnect. Fixes #18.

[stg.git] / projects / stargazer / plugins / other / smux / smux.cpp

diff --git a/projects/stargazer/plugins/other/smux/smux.cpp b/projects/stargazer/plugins/other/smux/smux.cpp
index c1352de2e51e9000bf065364d3e37b8f2083df59..81b9ccb50a8d3e43a9db3235e3b1b50277af111d 100644 (file)
--- a/projects/stargazer/plugins/other/smux/smux.cpp
+++ b/projects/stargazer/plugins/other/smux/smux.cpp
@@ -103,6 +103,9 @@ SMUX::SMUX()
       mutex(),
       running(false),
       stopped(true),
       mutex(),
       running(false),
       stopped(true),

+      needReconnect(false),
+      lastReconnectTry(0),
+      reconnectTimeout(1),

       sock(-1),
       smuxHandlers(),
       pdusHandlers(),
       sock(-1),
       smuxHandlers(),
       pdusHandlers(),


@@ -157,7 +160,7 @@ assert(corporations != NULL && "corporations must not be NULL");
 assert(traffcounter != NULL && "traffcounter must not be NULL");
 
 if (PrepareNet())
 assert(traffcounter != NULL && "traffcounter must not be NULL");
 
 if (PrepareNet())

-    return -1;
+    needReconnect = true;

 
 // Users
 sensors[OID(".1.3.6.1.4.1.38313.1.1.1")] = new TotalUsersSensor(*users);
 
 // Users
 sensors[OID(".1.3.6.1.4.1.38313.1.1.1")] = new TotalUsersSensor(*users);


@@ -205,6 +208,7 @@ if (!running)
     if (pthread_create(&thread, NULL, Runner, this))
         {
         errorStr = "Cannot create thread.";
     if (pthread_create(&thread, NULL, Runner, this))
         {
         errorStr = "Cannot create thread.";

+       logger("Cannot create thread.");

         printfd(__FILE__, "Cannot create thread\n");
         return -1;
         }
         printfd(__FILE__, "Cannot create thread\n");
         return -1;
         }


@@ -285,15 +289,15 @@ void SMUX::Run()
 {
 stopped = true;
 if (!SendOpenPDU(sock))
 {
 stopped = true;
 if (!SendOpenPDU(sock))

-    return;
+    needReconnect = true;

 if (!SendRReqPDU(sock))
 if (!SendRReqPDU(sock))

-    return;
+    needReconnect = true;

 running = true;
 stopped = false;
 
 while(running)
     {
 running = true;
 stopped = false;
 
 while(running)
     {

-    if (WaitPackets(sock))
+    if (WaitPackets(sock) && !needReconnect)

         {
         SMUX_PDUs_t * pdus = RecvSMUXPDUs(sock);
         if (pdus)
         {
         SMUX_PDUs_t * pdus = RecvSMUXPDUs(sock);
         if (pdus)


@@ -301,7 +305,11 @@ while(running)
             DispatchPDUs(pdus);
             ASN_STRUCT_FREE(asn_DEF_SMUX_PDUs, pdus);
             }
             DispatchPDUs(pdus);
             ASN_STRUCT_FREE(asn_DEF_SMUX_PDUs, pdus);
             }

+        else if (running)
+            Reconnect();

         }
         }

+    else if (running && needReconnect)
+        Reconnect();

     if (!running)
         break;
     }
     if (!running)
         break;
     }


@@ -316,6 +324,7 @@ sock = socket(AF_INET, SOCK_STREAM, 0);
 if (sock < 0)
     {
     errorStr = "Cannot create socket.";
 if (sock < 0)
     {
     errorStr = "Cannot create socket.";

+    logger("Cannot create a socket: %s", strerror(errno));

     printfd(__FILE__, "Cannot create socket\n");
     return true;
     }
     printfd(__FILE__, "Cannot create socket\n");
     return true;
     }


@@ -329,6 +338,7 @@ addr.sin_addr.s_addr = smuxSettings.GetIP();
 if (connect(sock, reinterpret_cast<struct sockaddr *>(&addr), sizeof(addr)))
     {
     errorStr = "Cannot connect.";
 if (connect(sock, reinterpret_cast<struct sockaddr *>(&addr), sizeof(addr)))
     {
     errorStr = "Cannot connect.";

+    logger("Cannot connect the socket: %s", strerror(errno));

     printfd(__FILE__, "Cannot connect. Message: '%s'\n", strerror(errno));
     return true;
     }
     printfd(__FILE__, "Cannot connect. Message: '%s'\n", strerror(errno));
     return true;
     }


@@ -336,6 +346,33 @@ if (connect(sock, reinterpret_cast<struct sockaddr *>(&addr), sizeof(addr)))
 return false;
 }
 
 return false;
 }
 

+bool SMUX::Reconnect()
+{
+if (needReconnect && difftime(time(NULL), lastReconnectTry) < reconnectTimeout)
+    return true;
+
+time(&lastReconnectTry);
+SendClosePDU(sock);
+close(sock);
+if (!PrepareNet())
+    if (SendOpenPDU(sock))
+        if (SendRReqPDU(sock))
+            {
+            reconnectTimeout = 1;
+            needReconnect = false;
+            logger("Connected successfully");
+            printfd(__FILE__, "Connected successfully\n");
+            return false;
+            }
+
+if (needReconnect)
+    if (reconnectTimeout < 60)
+        reconnectTimeout *= 2;
+
+needReconnect = true;
+return true;
+}
+

 bool SMUX::DispatchPDUs(const SMUX_PDUs_t * pdus)
 {
 SMUXHandlers::iterator it(smuxHandlers.find(pdus->present));
 bool SMUX::DispatchPDUs(const SMUX_PDUs_t * pdus)
 {
 SMUXHandlers::iterator it(smuxHandlers.find(pdus->present));