From d7ba48e5055825167973cfa42ac76a7003f987bc Mon Sep 17 00:00:00 2001
From: Adam Dickmeiss <adam@indexdata.dk>
Date: Thu, 20 Sep 2007 08:13:26 +0000
Subject: [PATCH] Fixed bug #1628: show command returns zero hits when
 searching a slow target. The problem was that a client was
 in Client_Idle case when it was actually about to perform a
 search or other operation. The problem was in function
 client_prep_connection where a client state was set to
 CLient_Idle if connection was already open. This is wrong.
 The client is not idle: it is about to perform a search. A
 new client state is therefore needed: Client_Continue,
 which is like Client_Idle but differs in that a client is
 considered active. Neither Connecting or Connected are the
 same stage because these are states prior to Init Handshake
 with target.

---
 doc/pazpar2_protocol.xml |    4 ++--
 src/client.c             |   12 ++++++++----
 src/client.h             |    5 +++--
 src/connection.c         |    9 +++++----
 4 files changed, 18 insertions(+), 12 deletions(-)

diff --git a/doc/pazpar2_protocol.xml b/doc/pazpar2_protocol.xml
index a4e208a..969093c 100644
--- a/doc/pazpar2_protocol.xml
+++ b/doc/pazpar2_protocol.xml
@@ -9,7 +9,7 @@
      <!ENTITY % idcommon SYSTEM "common/common.ent">
      %idcommon;
 ]>
-<!-- $Id: pazpar2_protocol.xml,v 1.14 2007-07-06 20:13:22 adam Exp $ -->
+<!-- $Id: pazpar2_protocol.xml,v 1.15 2007-09-20 08:13:26 adam Exp $ -->
 <refentry id="pazpar2_protocol">
  <refentryinfo>
   <productname>Pazpar2</productname>
@@ -528,7 +528,7 @@ search.pz2?session=605047297&command=bytarget&id=3
     The following client states are defined: Client_Connecting,
     Client_Connected, Client_Idle, Client_Initializing, Client_Searching,
     Client_Searching, Client_Presenting, Client_Error, Client_Failed,
-    Client_Disconnected, Client_Stopped.
+    Client_Disconnected, Client_Stopped, Client_Continue.
    </para>
   </refsect2>
 
diff --git a/src/client.c b/src/client.c
index 048c95c..f42ec23 100644
--- a/src/client.c
+++ b/src/client.c
@@ -1,4 +1,4 @@
-/* $Id: client.c,v 1.22 2007-09-19 13:23:35 adam Exp $
+/* $Id: client.c,v 1.23 2007-09-20 08:13:27 adam Exp $
    Copyright (c) 2006-2007, Index Data.
 
 This file is part of Pazpar2.
@@ -101,7 +101,8 @@ static const char *client_states[] = {
     "Client_Error",
     "Client_Failed",
     "Client_Disconnected",
-    "Client_Stopped"
+    "Client_Stopped",
+    "Client_Continue"
 };
 
 static struct client *client_freelist = 0;
@@ -817,7 +818,7 @@ void client_continue(struct client *cl)
     if (cl->state == Client_Connected) {
         client_init_request(cl);
     }
-    if (cl->state == Client_Idle)
+    if (cl->state == Client_Continue || cl->state == Client_Idle)
     {
         struct session *se = client_get_session(cl);
         if (cl->requestid != se->requestid && cl->pquery) {
@@ -833,6 +834,8 @@ void client_continue(struct client *cl)
             cl->records < cl->hits) {
             client_send_present(cl);
         }
+        else
+            client_set_state(cl, Client_Idle);
     }
 }
 
@@ -977,7 +980,8 @@ void client_set_session(struct client *cl, struct session *se)
 
 int client_is_active(struct client *cl)
 {
-    if (cl->connection && (cl->state == Client_Connecting ||
+    if (cl->connection && (cl->state == Client_Continue ||
+                           cl->state == Client_Connecting ||
                            cl->state == Client_Initializing ||
                            cl->state == Client_Searching ||
                            cl->state == Client_Presenting))
diff --git a/src/client.h b/src/client.h
index f9d5b64..ba40fc1 100644
--- a/src/client.h
+++ b/src/client.h
@@ -1,4 +1,4 @@
-/* $Id: client.h,v 1.3 2007-06-15 19:35:17 adam Exp $
+/* $Id: client.h,v 1.4 2007-09-20 08:13:27 adam Exp $
    Copyright (c) 2006-2007, Index Data.
 
 This file is part of Pazpar2.
@@ -40,7 +40,8 @@ enum client_state
     Client_Error,
     Client_Failed,
     Client_Disconnected,
-    Client_Stopped
+    Client_Stopped,
+    Client_Continue
 };
 
 int client_show_raw_begin(struct client *cl, int position,
diff --git a/src/connection.c b/src/connection.c
index 149709a..a8c9f20 100644
--- a/src/connection.c
+++ b/src/connection.c
@@ -1,4 +1,4 @@
-/* $Id: connection.c,v 1.11 2007-08-28 21:11:21 quinn Exp $
+/* $Id: connection.c,v 1.12 2007-09-20 08:13:27 adam Exp $
    Copyright (c) 2006-2007, Index Data.
 
 This file is part of Pazpar2.
@@ -261,7 +261,7 @@ static void connection_handler(IOCHAN i, int event)
             else  // we throw away response and go to idle mode
             {
                 yaz_log(YLOG_DEBUG, "Ignoring result of expired operation");
-                client_set_state(cl, Client_Idle);
+                client_set_state(cl, Client_Continue);
             }
 	}
 	/* if len==1 we do nothing but wait for more input */
@@ -477,8 +477,9 @@ int client_prep_connection(struct client *cl)
         else if (co->state == Conn_Open)
         {
             if (client_get_state(cl) == Client_Error 
-                || client_get_state(cl) == Client_Disconnected)
-                client_set_state(cl, Client_Idle);
+                || client_get_state(cl) == Client_Disconnected
+                || client_get_state(cl) == Client_Idle)
+                client_set_state(cl, Client_Continue);
             iochan_setflag(co->iochan, EVENT_OUTPUT);
         }
         return 1;
-- 
1.7.10.4