Log request number. More configurable keepalive with pdu/bw limits.

[yazpp-moved-to-github.git] / src / yaz-socket-manager.cpp

diff --git a/src/yaz-socket-manager.cpp b/src/yaz-socket-manager.cpp
index eeb06e2..163cb33 100644 (file)
--- a/src/yaz-socket-manager.cpp
+++ b/src/yaz-socket-manager.cpp
@@ -1,22 +1,8 @@
 /*
- * Copyright (c) 1998-1999, Index Data.
+ * Copyright (c) 1998-2001, Index Data.
  * See the file LICENSE for details.
- * Sebastian Hammer, Adam Dickmeiss
  * 
- * $Log: yaz-socket-manager.cpp,v $
- * Revision 1.4  1999-03-23 14:17:57  adam
- * More work on timeout handling. Work on yaz-client.
- *
- * Revision 1.3  1999/02/02 14:01:23  adam
- * First WIN32 port of YAZ++.
- *
- * Revision 1.2  1999/01/28 13:08:48  adam
- * Yaz_PDU_Assoc better encapsulated. Memory leak fix in
- * yaz-socket-manager.cc.
- *
- * Revision 1.1.1.1  1999/01/28 09:41:07  adam
- * First implementation of YAZ++.
- *
+ * $Id: yaz-socket-manager.cpp,v 1.20 2003-07-25 19:27:36 adam Exp $
  */
 #include <assert.h>
 #ifdef WIN32
@@ -27,10 +13,10 @@
 #include <unistd.h>
 #endif
 #include <errno.h>
+#include <string.h>
 
-#include <log.h>
-#include <yaz-socket-manager.h>
-
+#include <yaz/log.h>
+#include <yaz++/socket-manager.h>
 
 Yaz_SocketManager::YazSocketEntry **Yaz_SocketManager::lookupObserver(
     IYazSocketObserver *observer)
@@ -90,6 +76,11 @@ void Yaz_SocketManager::maskObserver(IYazSocketObserver *observer, int mask)
 {
     YazSocketEntry *se;
 
+    yaz_log(m_log, "obs=%p read=%d write=%d except=%d", observer,
+                   mask & YAZ_SOCKET_OBSERVE_READ,
+                   mask & YAZ_SOCKET_OBSERVE_WRITE,
+                   mask & YAZ_SOCKET_OBSERVE_EXCEPT);
+
     se = *lookupObserver(observer);
     if (se)
        se->mask = mask;
@@ -110,6 +101,7 @@ int Yaz_SocketManager::processEvent()
     YazSocketEntry *p;
     YazSocketEvent *event = getEvent();
     unsigned timeout = 0;
+    yaz_log (m_log, "Yaz_SocketManager::processEvent manager=%p", this);
     if (event)
     {
        event->observer->socketNotify(event->event);
@@ -133,11 +125,20 @@ int Yaz_SocketManager::processEvent()
        if (p->mask)
            no++;
        if (p->mask & YAZ_SOCKET_OBSERVE_READ)
+        {
+            yaz_log (m_log, "Yaz_SocketManager::select fd=%d read", fd);
            FD_SET(fd, &in);
+        }
        if (p->mask & YAZ_SOCKET_OBSERVE_WRITE)
+        {
+            yaz_log (m_log, "Yaz_SocketManager::select fd=%d write", fd);
            FD_SET(fd, &out);
+        }
        if (p->mask & YAZ_SOCKET_OBSERVE_EXCEPT)
+        {
+            yaz_log (m_log, "Yaz_SocketManager::select fd=%d except", fd);
            FD_SET(fd, &except);
+        }
        if (fd > max)
            max = fd;
        if (p->timeout)
@@ -146,22 +147,37 @@ int Yaz_SocketManager::processEvent()
            timeout_this = p->timeout;
            if (p->last_activity)
                timeout_this -= now - p->last_activity;
-           if (timeout_this < 1)
+           else
+               p->last_activity = now;
+           if (timeout_this < 1 || timeout_this > 2147483646)
                timeout_this = 1;
            if (!timeout || timeout_this < timeout)
                timeout = timeout_this;
+            p->timeout_this = timeout_this;
+            yaz_log (m_log, "Yaz_SocketManager::select timeout_this=%d", 
+                     p->timeout_this);
        }
     }
     if (!no)
+    {
+       yaz_log (m_log, "no pending events return 0");
+       if (!m_observers)
+           yaz_log (m_log, "no observers");
        return 0;
+    }
 
     struct timeval to;
     to.tv_sec = timeout;
     to.tv_usec = 0;
-
+    
+    yaz_log (m_log, "Yaz_SocketManager::select begin no=%d timeout=%d",
+             no, timeout);
     while ((res = select(max + 1, &in, &out, &except, timeout ? &to : 0)) < 0)
        if (errno != EINTR)
+       {
+           yaz_log (LOG_LOG|LOG_WARN, "select");
            return -1;
+       }
     now = time(0);
     for (p = m_observers; p; p = p->next)
     {
@@ -184,9 +200,12 @@ int Yaz_SocketManager::processEvent()
            event->event = mask;
            putEvent (event);
        }
-       else if (p->timeout && now >= p->last_activity + (int) (p->timeout))
+       else if (res == 0 && p->timeout && p->timeout_this == timeout)
        {
            YazSocketEvent *event = new YazSocketEvent;
+            assert (p->last_activity);
+           yaz_log (m_log, "timeout, now = %ld last_activity=%ld timeout=%d",
+                     now, p->last_activity, p->timeout);
            p->last_activity = now;
            event->observer = p->observer;
            event->event = YAZ_SOCKET_OBSERVE_TIMEOUT;
@@ -199,9 +218,14 @@ int Yaz_SocketManager::processEvent()
        delete event;
        return 1;
     }
-    return 0;
+    yaz_log (LOG_WARN, "unhandled event in processEvent");
+    return 1;
 }
 
+
+//    n p    n p  ......   n p    n p
+//   front                        back
+
 void Yaz_SocketManager::putEvent(YazSocketEvent *event)
 {
     // put in back of queue
@@ -265,6 +289,7 @@ Yaz_SocketManager::Yaz_SocketManager()
     m_observers = 0;
     m_queue_front = 0;
     m_queue_back = 0;
+    m_log = LOG_DEBUG;
 }
 
 Yaz_SocketManager::~Yaz_SocketManager()