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diff --git a/include/yazpp/z-assoc.h b/include/yazpp/z-assoc.h
new file mode 100644
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--- /dev/null
+++ b/include/yazpp/z-assoc.h
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 1998-2005, Index Data.
+ * See the file LICENSE for details.
+ * 
+ * $Id: z-assoc.h,v 1.1 2006-03-29 13:14:15 adam Exp $
+ */
+
+#ifndef YAZ_Z_ASSOC_INCLUDED
+#define YAZ_Z_ASSOC_INCLUDED
+
+#include <yaz/srw.h>
+#include <yaz/proto.h>
+#include <yaz/odr.h>
+#include <yazpp/pdu-observer.h>
+
+namespace yazpp_1 {
+/** Z39.50 Assocation.
+    This object implements the client - and server role of a generic
+    Z39.50 Association.
+*/
+class YAZ_EXPORT Z_Assoc : public IPDU_Observer {
+ public:
+    /// Create object using the PDU Observer specified
+    Z_Assoc(IPDU_Observable *the_PDU_Observable);
+    /// Destroy assocation and close PDU Observer
+    virtual ~Z_Assoc();
+    /// Receive PDU
+    void recv_PDU(const char *buf, int len);
+    /// Connect notification
+    virtual void connectNotify() = 0;
+    /// Failure notification
+    virtual void failNotify() = 0;
+    /// Timeout notification
+    virtual void timeoutNotify() = 0;
+    /// Timeout specify
+    void timeout(int timeout);
+    /// Begin Z39.50 client role
+    int client(const char *addr);
+    /// Begin Z39.50 server role
+    int server(const char *addr);
+    /// Close connection
+    void close();
+    /// Decode Z39.50 PDU.
+    Z_GDU *decode_GDU(const char *buf, int len);
+    /// Encode Z39.50 PDU.
+    int encode_GDU(Z_GDU *apdu, char **buf, int *len);
+    /// Send Z39.50 PDU
+    int send_Z_PDU(Z_APDU *apdu, int *len);
+    int send_GDU(Z_GDU *apdu, int *len);
+    /// Receive Z39.50 PDU
+    virtual void recv_GDU(Z_GDU *apdu, int len) = 0;
+    /// Create Z39.50 PDU with reasonable defaults
+    Z_APDU *create_Z_PDU(int type);
+    /// Request Alloc
+    ODR odr_encode ();
+    ODR odr_decode ();
+    ODR odr_print ();
+
+    void set_APDU_log(const char *fname);
+    const char *get_APDU_log();
+
+    /// OtherInformation
+    void get_otherInfoAPDU(Z_APDU *apdu, Z_OtherInformation ***oip);
+    Z_OtherInformationUnit *update_otherInformation (
+        Z_OtherInformation **otherInformationP, int createFlag,
+        int *oid, int categoryValue, int deleteFlag);
+    void set_otherInformationString (
+        Z_OtherInformation **otherInformationP,
+        int *oid, int categoryValue,
+        const char *str);
+    void set_otherInformationString (
+        Z_OtherInformation **otherInformation,
+        int oidval, int categoryValue,
+        const char *str);
+    void set_otherInformationString (
+        Z_APDU *apdu,
+        int oidval, int categoryValue,
+        const char *str);
+
+    Z_ReferenceId *getRefID(char* str);
+    Z_ReferenceId **get_referenceIdP(Z_APDU *apdu);
+    void transfer_referenceId(Z_APDU *from, Z_APDU *to);
+
+    const char *get_hostname();
+
+    int set_APDU_yazlog(int v);
+
+ private:
+    static int yaz_init_flag;
+    static int yaz_init_func();
+    IPDU_Observable *m_PDU_Observable;
+    ODR m_odr_in;
+    ODR m_odr_out;
+    ODR m_odr_print;
+    int m_log;
+    FILE *m_APDU_file;
+    char *m_APDU_fname;
+    char *m_hostname;
+    int m_APDU_yazlog;
+};
+};
+
+#endif
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+