Merge branch 'bmk/snmp/manager/request_override_options' into bmk/snmp/snmp420_integration

Conflicts:
	lib/snmp/src/app/snmp.appup.src

OTP-9162

5 files changed, 865 insertions, 272 deletions

diff --git a/lib/snmp/src/app/snmp.appup.src b/lib/snmp/src/app/snmp.appup.src
index be3bb7dffa..4c2de0fcf4 100644
--- a/lib/snmp/src/app/snmp.appup.src
+++ b/lib/snmp/src/app/snmp.appup.src
@@ -24,7 +24,7 @@
  [
   {"4.19", 
    [
-    {load_module, snmpm, soft_purge, soft_purge, []}, 
+    {load_module, snmpm, soft_purge, soft_purge, [snmpm_server]}, 
     {load_module, snmpa_usm, soft_purge, soft_purge, []}, 
     {load_module, snmpm_usm, soft_purge, soft_purge, []}, 
     {load_module, snmp_conf, soft_purge, soft_purge, []}, 
@@ -42,6 +42,8 @@
      [snmp_conf, snmp_target_mib]}, 
     {load_module, snmp_target_mib, soft_purge, soft_purge, 
      [snmp_conf]},
+    {update, snmpm_net_if, soft, soft_purge, soft_purge, []},
+    {update, snmpm_server, soft, soft_purge, soft_purge, [snmpm_net_if]},
     {update, snmpa_net_if, soft, soft_purge, soft_purge, 
      [snmp_conf, snmpa_mpd]},
     {update, snmpa_agent, soft, soft_purge, soft_purge, 
@@ -50,7 +52,7 @@
   }, 
   {"4.18", 
    [
-    {load_module, snmpm, soft_purge, soft_purge, []}, 
+    {load_module, snmpm, soft_purge, soft_purge, [snmpm_server]}, 
     {load_module, snmpa_usm, soft_purge, soft_purge, []}, 
     {load_module, snmpm_usm, soft_purge, soft_purge, []}, 
     {load_module, snmp_misc, soft_purge, soft_purge, []},
@@ -86,6 +88,9 @@
      [snmpa_mib_lib, snmpa_vacm]},
     {load_module, snmpa_mib_lib, soft_purge, soft_purge, []},
 
+    {update, snmpm_net_if, soft, soft_purge, soft_purge, []},
+    {update, snmpm_server, soft, soft_purge, soft_purge, [snmpm_net_if]},
+
     {update, snmpa_net_if, soft, soft_purge, soft_purge, 
      [snmp_conf, snmpa_mpd]},
     {update, snmpa_agent, soft, soft_purge, soft_purge, 
@@ -99,7 +104,7 @@
  [
   {"4.19", 
    [
-    {load_module, snmpm, soft_purge, soft_purge, []}, 
+    {load_module, snmpm, soft_purge, soft_purge, [snmpm_server]}, 
     {load_module, snmpa_usm, soft_purge, soft_purge, []}, 
     {load_module, snmpm_usm, soft_purge, soft_purge, []}, 
     {load_module, snmp_conf, soft_purge, soft_purge, []}, 
@@ -117,6 +122,10 @@
      [snmp_conf, snmp_target_mib]}, 
     {load_module, snmp_target_mib, soft_purge, soft_purge, 
      [snmp_conf]},
+
+    {update, snmpm_net_if, soft, soft_purge, soft_purge, []},
+    {update, snmpm_server, soft, soft_purge, soft_purge, [snmpm_net_if]},
+
     {update, snmpa_net_if, soft, soft_purge, soft_purge, 
      [snmp_conf, snmpa_mpd]},
     {update, snmpa_agent, soft, soft_purge, soft_purge, 
@@ -125,7 +134,7 @@
   }, 
   {"4.18", 
    [
-    {load_module, snmpm, soft_purge, soft_purge, []}, 
+    {load_module, snmpm, soft_purge, soft_purge, [snmpm_server]}, 
     {load_module, snmpa_usm, soft_purge, soft_purge, []}, 
     {load_module, snmpm_usm, soft_purge, soft_purge, []}, 
     {load_module, snmp_misc, soft_purge, soft_purge, []}, 
@@ -161,6 +170,9 @@
      [snmpa_mib_lib, snmpa_vacm]},
     {load_module, snmpa_mib_lib, soft_purge, soft_purge, []},
 
+    {update, snmpm_net_if, soft, soft_purge, soft_purge, []},
+    {update, snmpm_server, soft, soft_purge, soft_purge, [snmpm_net_if]},
+
     {update, snmpa_net_if, soft, soft_purge, soft_purge, 
      [snmp_conf, snmpa_mpd]},
     {update, snmpa_agent, soft, soft_purge, soft_purge, 
diff --git a/lib/snmp/src/manager/snmpm.erl b/lib/snmp/src/manager/snmpm.erl
index 36b4901e9a..8a629eaf3b 100644
--- a/lib/snmp/src/manager/snmpm.erl
+++ b/lib/snmp/src/manager/snmpm.erl
@@ -57,15 +57,16 @@
 	 usm_user_info/3, update_usm_user_info/4, 
 	 
 	 %% 
-	 %% Basic SNMP API
-	 sync_get/3, sync_get/4, sync_get/5, sync_get/6, 
-	 async_get/3, async_get/4, async_get/5, async_get/6, 
-	 sync_get_next/3, sync_get_next/4, sync_get_next/5, sync_get_next/6, 
-	 async_get_next/3, async_get_next/4, async_get_next/5, async_get_next/6, 
-	 sync_set/3, sync_set/4, sync_set/5, sync_set/6, 
-	 async_set/3, async_set/4, async_set/5, async_set/6, 
-	 sync_get_bulk/5, sync_get_bulk/6, sync_get_bulk/7, sync_get_bulk/8, 
-	 async_get_bulk/5, async_get_bulk/6, async_get_bulk/7, async_get_bulk/8, 
+	 %% Basic SNMP API (version "3").
+	 sync_get2/3, sync_get2/4, 
+	 async_get2/3, async_get2/4, 
+	 sync_get_next2/3, sync_get_next2/4, 
+	 async_get_next2/3, async_get_next2/4, 
+	 sync_set2/3, sync_set2/4, 
+	 async_set2/3, async_set2/4, 
+	 sync_get_bulk2/5, sync_get_bulk2/6, 
+	 async_get_bulk2/5, async_get_bulk2/6, 
+
 	 cancel_async_request/2, 
 	 
 	 %% 
@@ -91,7 +92,19 @@
 
 -export([format_reason/1, format_reason/2]).
 
-%% Backward compatibillity exports
+%% Backward compatibillity exports (API version "2")
+-export([
+	 sync_get/3, sync_get/4, sync_get/5, sync_get/6, 
+	 async_get/3, async_get/4, async_get/5, async_get/6, 
+	 sync_get_next/3, sync_get_next/4, sync_get_next/5, sync_get_next/6, 
+	 async_get_next/3, async_get_next/4, async_get_next/5, async_get_next/6, 
+	 sync_set/3, sync_set/4, sync_set/5, sync_set/6, 
+	 async_set/3, async_set/4, async_set/5, async_set/6, 
+	 sync_get_bulk/5, sync_get_bulk/6, sync_get_bulk/7, sync_get_bulk/8, 
+	 async_get_bulk/5, async_get_bulk/6, async_get_bulk/7, async_get_bulk/8 
+	]).
+
+%% Backward compatibillity exports (API version "1")
 -deprecated({agent_info,        3}).
 -deprecated({update_agent_info, 5}).
 -deprecated({g,                 3}).
@@ -145,12 +158,12 @@
 -export([start_link/3, snmpm_start_verify/2, snmpm_start_verify/3]).
 
 
--include("snmp_debug.hrl").
+-include_lib("snmp/src/misc/snmp_debug.hrl").
+-include_lib("snmp/include/snmp_types.hrl").
 -include("snmpm_atl.hrl").
--include("snmp_types.hrl").
+-include("snmpm_internal.hrl").
 
 -define(DEFAULT_AGENT_PORT, 161).
--define(DEFAULT_CONTEXT,    "").
 
 
 %% This function is called when the snmp application
@@ -497,23 +510,37 @@ which_usm_users(EngineID) when is_list(EngineID) ->
 %% --- synchroneous get-request ---
 %% 
 
-sync_get(UserId, TargetName, Oids) ->
-    sync_get(UserId, TargetName, ?DEFAULT_CONTEXT, Oids).
+sync_get2(UserId, TargetName, Oids) ->
+    sync_get2(UserId, TargetName, Oids, []).
 
-sync_get(UserId, TargetName, Context, Oids) when is_list(Oids) ->
-    snmpm_server:sync_get(UserId, TargetName, Context, Oids);
+sync_get2(UserId, TargetName, Oids, SendOpts) 
+  when is_list(Oids) andalso is_list(SendOpts) ->
+    snmpm_server:sync_get2(UserId, TargetName, Oids, SendOpts).
 
-sync_get(UserId, TargetName, Oids, Timeout) when is_integer(Timeout) ->
-    sync_get(UserId, TargetName, ?DEFAULT_CONTEXT, Oids, Timeout).
+%% <BACKWARD-COMPAT>
+sync_get(UserId, TargetName, Oids) ->
+    sync_get2(UserId, TargetName, Oids).
+
+sync_get(UserId, TargetName, Oids, Timeout) 
+  when is_list(Oids) andalso is_integer(Timeout) ->
+    SendOpts = [{timeout, Timeout}],
+    sync_get2(UserId, TargetName, Oids, SendOpts);
+sync_get(UserId, TargetName, Context, [OH|_] = Oids) 
+  when is_list(Context) andalso is_list(OH) ->
+    SendOpts = [{context, Context}],
+    sync_get2(UserId, TargetName, Oids, SendOpts).
 
 sync_get(UserId, TargetName, Context, Oids, Timeout) ->
-    snmpm_server:sync_get(UserId, TargetName, Context, Oids, Timeout).
+    SendOpts = [{context, Context}, {timeout, Timeout}],
+    sync_get2(UserId, TargetName, Oids, SendOpts).
 
 sync_get(UserId, TargetName, Context, Oids, Timeout, ExtraInfo) ->
-    snmpm_server:sync_get(UserId, TargetName, Context, Oids, Timeout, 
-			  ExtraInfo).
+    SendOpts = [{context, Context}, {timeout, Timeout}, {extra, ExtraInfo}],
+    sync_get2(UserId, TargetName, Oids, SendOpts).
+%% </BACKWARD-COMPAT>
 
 
+%% <DEPRECATED>
 g(UserId, Addr, Oids) ->
     g(UserId, Addr, ?DEFAULT_AGENT_PORT, Oids).
 
@@ -559,6 +586,7 @@ g(UserId, Addr, Port, CtxName, Oids, Timeout, ExtraInfo) ->
 	Error ->
 	    Error
     end.
+%% </DEPRECATED>
 
 
 
@@ -568,23 +596,36 @@ g(UserId, Addr, Port, CtxName, Oids, Timeout, ExtraInfo) ->
 %% through a call to handle_pdu/5
 %% 
 
-async_get(UserId, TargetName, Oids) ->
-    async_get(UserId, TargetName, ?DEFAULT_CONTEXT, Oids).
+async_get2(UserId, TargetName, Oids) ->
+    async_get2(UserId, TargetName, Oids, []).
+
+async_get2(UserId, TargetName, Oids, SendOpts) 
+  when is_list(Oids) andalso is_list(SendOpts) ->
+    snmpm_server:async_get2(UserId, TargetName, Oids, SendOpts).
 
-async_get(UserId, TargetName, Context, Oids) when is_list(Oids) ->
-    snmpm_server:async_get(UserId, TargetName, Context, Oids);
+%% <BACKWARD-COMPAT>
+async_get(UserId, TargetName, Oids) ->
+    async_get2(UserId, TargetName, Oids).
 
 async_get(UserId, TargetName, Oids, Expire) when is_integer(Expire) ->
-    async_get(UserId, TargetName, ?DEFAULT_CONTEXT, Oids, Expire).
+    SendOpts = [{timeout, Expire}], 
+    async_get2(UserId, TargetName, Oids, SendOpts);
+async_get(UserId, TargetName, Context, Oids) 
+  when is_list(Context) andalso is_list(Oids) ->
+    SendOpts = [{context, Context}], 
+    async_get2(UserId, TargetName, Oids, SendOpts).
 
 async_get(UserId, TargetName, Context, Oids, Expire) ->
-    snmpm_server:async_get(UserId, TargetName, Context, Oids, Expire).
+    SendOpts = [{timeout, Expire}, {context, Context}], 
+    async_get2(UserId, TargetName, Oids, SendOpts).
 
 async_get(UserId, TargetName, Context, Oids, Expire, ExtraInfo) ->
-    snmpm_server:async_get(UserId, TargetName, Context, Oids, Expire, 
-			   ExtraInfo).
+    SendOpts = [{timeout, Expire}, {context, Context}, {extra, ExtraInfo}], 
+    async_get2(UserId, TargetName, Oids, SendOpts).
+%% </BACKWARD-COMPAT>
 
 
+%% <DEPRECATED>
 ag(UserId, Addr, Oids) ->
     ag(UserId, Addr, ?DEFAULT_AGENT_PORT, Oids).
 
@@ -629,31 +670,44 @@ ag(UserId, Addr, Port, CtxName, Oids, Expire, ExtraInfo) ->
 	Error ->
 	    Error
     end.
+%% </DEPRECATED>
 
 
 
 %% --- synchroneous get_next-request ---
 %% 
 
-sync_get_next(UserId, TargetName, Oids) ->
-    sync_get_next(UserId, TargetName, ?DEFAULT_CONTEXT, Oids).
+sync_get_next2(UserId, TargetName, Oids) ->
+    sync_get_next2(UserId, TargetName, Oids, []).
 
-sync_get_next(UserId, TargetName, Context, Oids) 
-  when is_list(Context) andalso is_list(Oids) ->
-    snmpm_server:sync_get_next(UserId, TargetName, Context, Oids);
+sync_get_next2(UserId, TargetName, Oids, SendOpts) 
+  when is_list(Oids) andalso is_list(SendOpts) ->
+    snmpm_server:sync_get_next2(UserId, TargetName, Oids, SendOpts).
+
+%% <BACKWARD-COMPAT>
+sync_get_next(UserId, TargetName, Oids) ->
+    sync_get_next2(UserId, TargetName, Oids).
 
 sync_get_next(UserId, TargetName, Oids, Timeout) 
   when is_list(Oids) andalso is_integer(Timeout) ->
-    sync_get_next(UserId, TargetName, ?DEFAULT_CONTEXT, Oids, Timeout).
+    SendOpts = [{timeout, Timeout}], 
+    sync_get_next2(UserId, TargetName, Oids, SendOpts);
+sync_get_next(UserId, TargetName, Context, Oids) 
+  when is_list(Context) andalso is_list(Oids) ->
+    SendOpts = [{context, Context}], 
+    sync_get_next2(UserId, TargetName, Oids, SendOpts).
 
 sync_get_next(UserId, TargetName, Context, Oids, Timeout) ->
-    snmpm_server:sync_get_next(UserId, TargetName, Context, Oids, Timeout).
+    SendOpts = [{timeout, Timeout}, {context, Context}], 
+    sync_get_next2(UserId, TargetName, Oids, SendOpts).
 
 sync_get_next(UserId, TargetName, Context, Oids, Timeout, ExtraInfo) ->
-    snmpm_server:sync_get_next(UserId, TargetName, Context, Oids, Timeout, 
-			       ExtraInfo).
+    SendOpts = [{timeout, Timeout}, {context, Context}, {extra, ExtraInfo}], 
+    sync_get_next2(UserId, TargetName, Oids, SendOpts).
+%% </BACKWARD-COMPAT>
 
 
+%% <DEPRECATED>
 gn(UserId, Addr, Oids) ->
     gn(UserId, Addr, ?DEFAULT_AGENT_PORT, Oids).
 
@@ -698,30 +752,44 @@ gn(UserId, Addr, Port, CtxName, Oids, Timeout, ExtraInfo) ->
 	Error ->
 	    Error
     end.
+%% </DEPRECATED>
 
 
 
 %% --- asynchroneous get_next-request ---
 %% 
 
+async_get_next2(UserId, TargetName, Oids) ->
+    async_get_next2(UserId, TargetName, Oids, []).
+
+async_get_next2(UserId, TargetName, Oids, SendOpts) 
+  when is_list(Oids) andalso is_list(SendOpts) ->
+    snmpm_server:async_get_next2(UserId, TargetName, Oids, SendOpts).
+
+%% <BACKWARD-COMPAT>
 async_get_next(UserId, TargetName, Oids) ->
-    async_get_next(UserId, TargetName, ?DEFAULT_CONTEXT, Oids).
+    async_get_next2(UserId, TargetName, Oids).
 
+async_get_next(UserId, TargetName, Oids, Expire) 
+  when is_list(Oids) andalso is_integer(Expire) ->
+    SendOpts = [{timeout, Expire}], 
+    async_get_next2(UserId, TargetName, Oids, SendOpts);
 async_get_next(UserId, TargetName, Context, Oids) 
   when is_list(Context) andalso is_list(Oids) ->
-    snmpm_server:async_get_next(UserId, TargetName, Context, Oids);
+    SendOpts = [{context, Context}], 
+    async_get_next2(UserId, TargetName, Oids, SendOpts).
 
-async_get_next(UserId, TargetName, Oids, Timeout) 
-  when is_list(Oids) andalso is_integer(Timeout) ->
-    async_get_next(UserId, TargetName, ?DEFAULT_CONTEXT, Oids, Timeout).
+async_get_next(UserId, TargetName, Context, Oids, Expire) ->
+    SendOpts = [{timeout, Expire}, {context, Context}], 
+    async_get_next2(UserId, TargetName, Oids, SendOpts).
 
-async_get_next(UserId, TargetName, Context, Oids, Timeout) ->
-    snmpm_server:async_get_next(UserId, TargetName, Context, Oids, Timeout).
+async_get_next(UserId, TargetName, Context, Oids, Expire, ExtraInfo) ->
+    SendOpts = [{timeout, Expire}, {context, Context}, {extra, ExtraInfo}], 
+    async_get_next2(UserId, TargetName, Oids, SendOpts).
+%% </BACKWARD-COMPAT>
 
-async_get_next(UserId, TargetName, Context, Oids, Timeout, ExtraInfo) ->
-    snmpm_server:async_get_next(UserId, TargetName, Context, Oids, Timeout, 
-				ExtraInfo).
 
+%% <DEPRECATED>
 agn(UserId, Addr, Oids) ->
     agn(UserId, Addr, ?DEFAULT_AGENT_PORT, Oids).
 
@@ -767,31 +835,44 @@ agn(UserId, Addr, Port, CtxName, Oids, Expire, ExtraInfo) ->
 	Error ->
 	    Error
     end.
+%% </DEPRECATED>
 
 
 
 %% --- synchroneous set-request ---
 %% 
 
-sync_set(UserId, TargetName, VarsAndVals) ->
-    sync_set(UserId, TargetName, ?DEFAULT_CONTEXT, VarsAndVals).
+sync_set2(UserId, TargetName, VarsAndVals) ->
+    sync_set2(UserId, TargetName, VarsAndVals, []).
 
-sync_set(UserId, TargetName, Context, VarsAndVals) 
-  when is_list(Context) andalso is_list(VarsAndVals) ->
-    snmpm_server:sync_set(UserId, TargetName, Context, VarsAndVals);
+sync_set2(UserId, TargetName, VarsAndVals, SendOpts) 
+  when is_list(VarsAndVals) andalso is_list(SendOpts) ->
+    snmpm_server:sync_set2(UserId, TargetName, VarsAndVals, SendOpts).
+
+%% <BACKWARD-COMPAT>
+sync_set(UserId, TargetName, VarsAndVals) ->
+    sync_set2(UserId, TargetName, VarsAndVals).
 
 sync_set(UserId, TargetName, VarsAndVals, Timeout) 
   when is_list(VarsAndVals) andalso is_integer(Timeout) ->
-    sync_set(UserId, TargetName, ?DEFAULT_CONTEXT, VarsAndVals, Timeout).
+    SendOpts = [{timeout, Timeout}], 
+    sync_set2(UserId, TargetName, VarsAndVals, SendOpts);
+sync_set(UserId, TargetName, Context, VarsAndVals) 
+  when is_list(Context) andalso is_list(VarsAndVals) ->
+    SendOpts = [{context, Context}], 
+    sync_set2(UserId, TargetName, VarsAndVals, SendOpts).
 
 sync_set(UserId, TargetName, Context, VarsAndVals, Timeout) ->
-    snmpm_server:sync_set(UserId, TargetName, Context, VarsAndVals, Timeout).
+    SendOpts = [{timeout, Timeout}, {context, Context}], 
+    sync_set2(UserId, TargetName, VarsAndVals, SendOpts).
 
 sync_set(UserId, TargetName, Context, VarsAndVals, Timeout, ExtraInfo) ->
-    snmpm_server:sync_set(UserId, TargetName, Context, VarsAndVals, Timeout, 
-			  ExtraInfo).
+    SendOpts = [{timeout, Timeout}, {context, Context}, {extra, ExtraInfo}], 
+    sync_set2(UserId, TargetName, VarsAndVals, SendOpts).
+%% </BACKWARD-COMPAT>
 
 
+%% <DEPRECATED>
 s(UserId, Addr, VarsAndVals) ->
     s(UserId, Addr, ?DEFAULT_AGENT_PORT, VarsAndVals).
 
@@ -845,31 +926,44 @@ s(UserId, Addr, Port, CtxName, VarsAndVals, Timeout, ExtraInfo) ->
 	Error ->
 	    Error
     end.
+%% </DEPRECATED>
 
 
 
 %% --- asynchroneous set-request --- 
 %% 
 
-async_set(UserId, TargetName, VarsAndVals) ->
-    async_set(UserId, TargetName, ?DEFAULT_CONTEXT, VarsAndVals).
+async_set2(UserId, TargetName, VarsAndVals) ->
+    async_set2(UserId, TargetName, VarsAndVals, []).
 
-async_set(UserId, TargetName, Context, VarsAndVals) 
-  when is_list(Context) andalso is_list(VarsAndVals) ->
-    snmpm_server:async_set(UserId, TargetName, Context, VarsAndVals);
+async_set2(UserId, TargetName, VarsAndVals, SendOpts) 
+  when is_list(VarsAndVals) andalso is_list(SendOpts) ->
+    snmpm_server:async_set2(UserId, TargetName, VarsAndVals, SendOpts).
+
+%% <BACKWARD-COMPAT>
+async_set(UserId, TargetName, VarsAndVals) ->
+    async_set2(UserId, TargetName, VarsAndVals).
 
 async_set(UserId, TargetName, VarsAndVals, Expire) 
   when is_list(VarsAndVals) andalso is_integer(Expire) ->
-    async_set(UserId, TargetName, ?DEFAULT_CONTEXT, VarsAndVals, Expire).
+    SendOpts = [{timeout, Expire}], 
+    async_set2(UserId, TargetName, VarsAndVals, SendOpts);
+async_set(UserId, TargetName, Context, VarsAndVals) 
+  when is_list(Context) andalso is_list(VarsAndVals) ->
+    SendOpts = [{context, Context}], 
+    async_set2(UserId, TargetName, VarsAndVals, SendOpts).
 
 async_set(UserId, TargetName, Context, VarsAndVals, Expire) ->
-    snmpm_server:async_set(UserId, TargetName, Context, VarsAndVals, Expire).
+    SendOpts = [{timeout, Expire}, {context, Context}], 
+    async_set2(UserId, TargetName, VarsAndVals, SendOpts).
 
 async_set(UserId, TargetName, Context, VarsAndVals, Expire, ExtraInfo) ->
-    snmpm_server:async_set(UserId, TargetName, Context, VarsAndVals, Expire, 
-			   ExtraInfo).
+    SendOpts = [{timeout, Expire}, {context, Context}, {extra, ExtraInfo}], 
+    async_set2(UserId, TargetName, VarsAndVals, SendOpts).
+%% </BACKWARD-COMPAT>
 
 
+%% <DEPRECATED>
 as(UserId, Addr, VarsAndVals) ->
     as(UserId, Addr, ?DEFAULT_AGENT_PORT, VarsAndVals).
 
@@ -923,44 +1017,77 @@ as(UserId, Addr, Port, CtxName, VarsAndVals, Expire, ExtraInfo) ->
 	Error ->
 	    Error
     end.
-
-
+%% </DEPRECATED>
 
 
 %% --- synchroneous get-bulk ---
 %% 
 
-sync_get_bulk(UserId, TargetName, NonRep, MaxRep, Oids) ->
-    sync_get_bulk(UserId, TargetName, NonRep, MaxRep, ?DEFAULT_CONTEXT, Oids).
+sync_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids) ->
+    sync_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, []).
 
-sync_get_bulk(UserId, TargetName, NonRep, MaxRep, Context, Oids) 
+sync_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, SendOpts) 
   when is_integer(NonRep) andalso 
        is_integer(MaxRep) andalso 
-       is_list(Context) andalso 
-       is_list(Oids) ->
-    snmpm_server:sync_get_bulk(UserId, TargetName, 
-			       NonRep, MaxRep, 
-			       Context, Oids);
+       is_list(Oids) andalso 
+       is_list(SendOpts) ->
+    %% p("sync_get_bulk -> entry with"
+    %%   "~n   UserId:     ~p"
+    %%   "~n   TargetName: ~p"
+    %%   "~n   NonRep:     ~p"
+    %%   "~n   MaxRep:     ~p"
+    %%   "~n   Oids:       ~p"
+    %%   "~n   SendOpts:   ~p", 
+    %%   [UserId, TargetName, NonRep, MaxRep, Oids, SendOpts]),
+    snmpm_server:sync_get_bulk2(UserId, TargetName, 
+				NonRep, MaxRep, Oids, SendOpts).
+
+%% <BACKWARD-COMPAT>
+sync_get_bulk(UserId, TargetName, NonRep, MaxRep, Oids) ->
+    sync_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids).
 
 sync_get_bulk(UserId, TargetName, NonRep, MaxRep, Oids, Timeout) 
   when is_integer(NonRep) andalso 
        is_integer(MaxRep) andalso 
        is_list(Oids) andalso 
        is_integer(Timeout) ->
-    sync_get_bulk(UserId, TargetName, NonRep, MaxRep, 
-		  ?DEFAULT_CONTEXT, Oids, Timeout).
+    SendOpts = [{timeout, Timeout}], 
+    sync_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, SendOpts);
+sync_get_bulk(UserId, TargetName, NonRep, MaxRep, Context, Oids) 
+  when is_integer(NonRep) andalso 
+       is_integer(MaxRep) andalso 
+       is_list(Context) andalso 
+       is_list(Oids) ->
+    %% p("sync_get_bulk -> entry with"
+    %%   "~n   UserId: ~p"
+    %%   "~n   TargetName: ~p"
+    %%   "~n   NonRep: ~p"
+    %%   "~n   MaxRep: ~p"
+    %%   "~n   Context: ~p"
+    %%   "~n   Oids: ~p", [UserId, TargetName, NonRep, MaxRep, Context, Oids]),
+    SendOpts = [{context, Context}], 
+    sync_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, SendOpts).
 
 sync_get_bulk(UserId, TargetName, NonRep, MaxRep, Context, Oids, Timeout) ->
-    snmpm_server:sync_get_bulk(UserId, TargetName, NonRep, MaxRep, 
-			       Context, Oids, Timeout).
+    SendOpts = [{timeout, Timeout}, {context, Context}], 
+    sync_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, SendOpts).
 
 sync_get_bulk(UserId, TargetName, NonRep, MaxRep, Context, Oids, Timeout, 
 	      ExtraInfo) ->
-    snmpm_server:sync_get_bulk(UserId, TargetName, NonRep, MaxRep, 
-			       Context, Oids, Timeout, ExtraInfo).
+    SendOpts = [{timeout, Timeout}, {context, Context}, {extra, ExtraInfo}], 
+    sync_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, SendOpts).
+%% </BACKWARD-COMPAT>
 
 
+%% <DEPRECATED>
 gb(UserId, Addr, NonRep, MaxRep, Oids) ->
+    %% p("gb -> entry with"
+    %%   "~n   UserId: ~p"
+    %%   "~n   Addr:   ~p"
+    %%   "~n   NonRep: ~p"
+    %%   "~n   MaxRep: ~p"
+    %%   "~n   Oids:   ~p", 
+    %%   [UserId, Addr, NonRep, MaxRep, Oids]),
     gb(UserId, Addr, ?DEFAULT_AGENT_PORT, NonRep, MaxRep, Oids).
 
 gb(UserId, Addr, Port, NonRep, MaxRep, Oids) 
@@ -968,6 +1095,14 @@ gb(UserId, Addr, Port, NonRep, MaxRep, Oids)
        is_integer(NonRep) andalso 
        is_integer(MaxRep) andalso 
        is_list(Oids) ->
+    %% p("gb -> entry with"
+    %%   "~n   UserId: ~p"
+    %%   "~n   Addr:   ~p"
+    %%   "~n   Port:   ~p"
+    %%   "~n   NonRep: ~p"
+    %%   "~n   MaxRep: ~p"
+    %%   "~n   Oids:   ~p", 
+    %%   [UserId, Addr, Port, NonRep, MaxRep, Oids]),
     gb(UserId, Addr, Port, NonRep, MaxRep, ?DEFAULT_CONTEXT, Oids);
 
 gb(UserId, Addr, NonRep, MaxRep, CtxName, Oids) 
@@ -975,6 +1110,14 @@ gb(UserId, Addr, NonRep, MaxRep, CtxName, Oids)
        is_integer(MaxRep) andalso 
        is_list(CtxName) andalso 
        is_list(Oids) ->
+    %% p("gb -> entry with"
+    %%   "~n   UserId:  ~p"
+    %%   "~n   Addr:    ~p"
+    %%   "~n   NonRep:  ~p"
+    %%   "~n   MaxRep:  ~p"
+    %%   "~n   CtxName: ~p"
+    %%   "~n   Oids:    ~p", 
+    %%   [UserId, Addr, NonRep, MaxRep, CtxName, Oids]),
     gb(UserId, Addr, ?DEFAULT_AGENT_PORT, NonRep, MaxRep, CtxName, Oids);
 
 gb(UserId, Addr, NonRep, MaxRep, Oids, Timeout) 
@@ -982,6 +1125,14 @@ gb(UserId, Addr, NonRep, MaxRep, Oids, Timeout)
        is_integer(MaxRep) andalso 
        is_list(Oids) andalso 
        is_integer(Timeout) ->
+    %% p("gb -> entry with"
+    %%   "~n   UserId:  ~p"
+    %%   "~n   Addr:    ~p"
+    %%   "~n   NonRep:  ~p"
+    %%   "~n   MaxRep:  ~p"
+    %%   "~n   Oids:    ~p"
+    %%   "~n   Timeout: ~p", 
+    %%   [UserId, Addr, NonRep, MaxRep, Oids, Timeout]),
     gb(UserId, Addr, ?DEFAULT_AGENT_PORT, NonRep, MaxRep, Oids, Timeout).
 
 gb(UserId, Addr, Port, NonRep, MaxRep, CtxName, Oids) 
@@ -990,8 +1141,18 @@ gb(UserId, Addr, Port, NonRep, MaxRep, CtxName, Oids)
        is_integer(MaxRep) andalso 
        is_list(CtxName) andalso 
        is_list(Oids) ->
+    %% p("gb -> entry with"
+    %%   "~n   UserId:  ~p"
+    %%   "~n   Addr:    ~p"
+    %%   "~n   Port:    ~p"
+    %%   "~n   NonRep:  ~p"
+    %%   "~n   MaxRep:  ~p"
+    %%   "~n   CtxName: ~p"
+    %%   "~n   Oids:    ~p", 
+    %%   [UserId, Addr, Port, NonRep, MaxRep, CtxName, Oids]),
     case target_name(Addr, Port) of
 	{ok, TargetName} ->
+	    %% p("gb -> TargetName: ~p", [TargetName]),
 	    sync_get_bulk(UserId, TargetName, NonRep, MaxRep, CtxName, Oids);
 	Error ->
 	    Error
@@ -1003,6 +1164,15 @@ gb(UserId, Addr, Port, NonRep, MaxRep, Oids, Timeout)
        is_integer(MaxRep) andalso 
        is_list(Oids) andalso 
        is_integer(Timeout) ->
+    %% p("gb -> entry with"
+    %%   "~n   UserId:  ~p"
+    %%   "~n   Addr:    ~p"
+    %%   "~n   Port:    ~p"
+    %%   "~n   NonRep:  ~p"
+    %%   "~n   MaxRep:  ~p"
+    %%   "~n   Oids:    ~p"
+    %%   "~n   Timeout: ~p", 
+    %%   [UserId, Addr, Port, NonRep, MaxRep, Oids, Timeout]),
     gb(UserId, Addr, Port, NonRep, MaxRep, ?DEFAULT_CONTEXT, Oids, Timeout);
 
 gb(UserId, Addr, NonRep, MaxRep, CtxName, Oids, Timeout) 
@@ -1011,10 +1181,29 @@ gb(UserId, Addr, NonRep, MaxRep, CtxName, Oids, Timeout)
        is_list(CtxName) andalso 
        is_list(Oids) andalso 
        is_integer(Timeout) ->
+    %% p("gb -> entry with"
+    %%   "~n   UserId:  ~p"
+    %%   "~n   Addr:    ~p"
+    %%   "~n   NonRep:  ~p"
+    %%   "~n   MaxRep:  ~p"
+    %%   "~n   CtxName: ~p"
+    %%   "~n   Oids:    ~p"
+    %%   "~n   Timeout: ~p", 
+    %%   [UserId, Addr, NonRep, MaxRep, CtxName, Oids, Timeout]),
     gb(UserId, Addr, ?DEFAULT_AGENT_PORT, NonRep, MaxRep, CtxName, Oids, 
        Timeout).
 
 gb(UserId, Addr, Port, NonRep, MaxRep, CtxName, Oids, Timeout) ->
+    %% p("gb -> entry with"
+    %%   "~n   UserId:  ~p"
+    %%   "~n   Addr:    ~p"
+    %%   "~n   Port:    ~p"
+    %%   "~n   NonRep:  ~p"
+    %%   "~n   MaxRep:  ~p"
+    %%   "~n   CtxName: ~p"
+    %%   "~n   Oids:    ~p"
+    %%   "~n   Timeout: ~p", 
+    %%   [UserId, Addr, Port, NonRep, MaxRep, CtxName, Oids, Timeout]),
     case target_name(Addr, Port) of
 	{ok, TargetName} ->
 	    sync_get_bulk(UserId, TargetName, 
@@ -1024,6 +1213,17 @@ gb(UserId, Addr, Port, NonRep, MaxRep, CtxName, Oids, Timeout) ->
     end.
 
 gb(UserId, Addr, Port, NonRep, MaxRep, CtxName, Oids, Timeout, ExtraInfo) ->
+    %% p("gb -> entry with"
+    %%   "~n   UserId:    ~p"
+    %%   "~n   Addr:      ~p"
+    %%   "~n   Port:      ~p"
+    %%   "~n   NonRep:    ~p"
+    %%   "~n   MaxRep:    ~p"
+    %%   "~n   CtxName:   ~p"
+    %%   "~n   Oids:      ~p"
+    %%   "~n   Timeout:   ~p"
+    %%   "~n   ExtraInfo: ~p", 
+    %%   [UserId, Addr, Port, NonRep, MaxRep, CtxName, Oids, Timeout, ExtraInfo]),
     case target_name(Addr, Port) of
 	{ok, TargetName} ->
 	    sync_get_bulk(UserId, TargetName, 
@@ -1031,42 +1231,55 @@ gb(UserId, Addr, Port, NonRep, MaxRep, CtxName, Oids, Timeout, ExtraInfo) ->
 	Error ->
 	    Error
     end.
+%% </DEPRECATED>
 
 
 
 %% --- asynchroneous get-bulk ---
 %% 
 
-async_get_bulk(UserId, TargetName, NonRep, MaxRep, Oids) ->
-    async_get_bulk(UserId, TargetName, NonRep, MaxRep, ?DEFAULT_CONTEXT, Oids).
+async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids) ->
+    async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, []).
 
-async_get_bulk(UserId, TargetName, NonRep, MaxRep, Context, Oids) 
+async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, SendOpts) 
   when is_integer(NonRep) andalso 
        is_integer(MaxRep) andalso 
-       is_list(Context) andalso 
-       is_list(Oids) ->
-    snmpm_server:async_get_bulk(UserId, TargetName, 
-				NonRep, MaxRep, Context, Oids);
+       is_list(Oids) andalso 
+       is_list(SendOpts) ->
+    snmpm_server:async_get_bulk2(UserId, TargetName, 
+				 NonRep, MaxRep, Oids, SendOpts).
+
+%% <BACKWARD-COMPAT>
+async_get_bulk(UserId, TargetName, NonRep, MaxRep, Oids) ->
+    async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids).
 
 async_get_bulk(UserId, TargetName, NonRep, MaxRep, Oids, Expire) 
   when is_integer(NonRep) andalso 
        is_integer(MaxRep) andalso 
        is_list(Oids) andalso 
        is_integer(Expire) ->
-    async_get_bulk(UserId, TargetName, 
-		   NonRep, MaxRep, ?DEFAULT_CONTEXT, Oids, Expire).
+    SendOpts = [{timeout, Expire}],     
+    async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, SendOpts);
+async_get_bulk(UserId, TargetName, NonRep, MaxRep, Context, Oids) 
+  when is_integer(NonRep) andalso 
+       is_integer(MaxRep) andalso 
+       is_list(Context) andalso 
+       is_list(Oids) ->
+    SendOpts = [{context, Context}], 
+    async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, SendOpts).
 
 async_get_bulk(UserId, TargetName, NonRep, MaxRep, Context, Oids, Expire) ->
-    snmpm_server:async_get_bulk(UserId, TargetName, 
-				NonRep, MaxRep, Context, Oids, Expire).
+    SendOpts = [{timeout, Expire}, {context, Context}], 
+    async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, SendOpts).
 
 async_get_bulk(UserId, TargetName, NonRep, MaxRep, Context, Oids, Expire, 
 	       ExtraInfo) ->
-    snmpm_server:async_get_bulk(UserId, TargetName, 
-				NonRep, MaxRep, 
-				Context, Oids, Expire, ExtraInfo).
+    SendOpts = [{timeout, Expire}, {context, Context}, {extra, ExtraInfo}], 
+    async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, SendOpts).
+%% </BACKWARD-COMPAT>
 
 
+%% <DEPRECATED>
 agb(UserId, Addr, NonRep, MaxRep, Oids) ->
     agb(UserId, Addr, ?DEFAULT_AGENT_PORT, NonRep, MaxRep, Oids).
 
@@ -1139,6 +1352,7 @@ agb(UserId, Addr, Port, NonRep, MaxRep, CtxName, Oids, Expire, ExtraInfo) ->
 	Error ->
 	    Error
     end.
+%% </DEPRECATED>
 
 
 cancel_async_request(UserId, ReqId) ->
diff --git a/lib/snmp/src/manager/snmpm_internal.hrl b/lib/snmp/src/manager/snmpm_internal.hrl
index 5d9b32e3f6..53ad41c6b0 100644
--- a/lib/snmp/src/manager/snmpm_internal.hrl
+++ b/lib/snmp/src/manager/snmpm_internal.hrl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2006-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2011. All Rights Reserved.
 %% 
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
@@ -20,6 +20,11 @@
 -ifndef(snmpm_internal).
 -define(snmpm_internal, true).
 
+-define(DEFAULT_CONTEXT, "").
+-define(SNMPM_EXTRA_INFO_TAG, snmpm_extra_info_tag).
+-define(DEFAULT_EXTRA_INFO, {?SNMPM_EXTRA_INFO_TAG}).
+
+
 -include_lib("snmp/src/app/snmp_internal.hrl").
 
 -define(snmpm_info(F, A),    ?snmp_info("manager",    F, A)).
diff --git a/lib/snmp/src/manager/snmpm_net_if.erl b/lib/snmp/src/manager/snmpm_net_if.erl
index 07156dacd9..3d248fff57 100644
--- a/lib/snmp/src/manager/snmpm_net_if.erl
+++ b/lib/snmp/src/manager/snmpm_net_if.erl
@@ -99,7 +99,7 @@ stop(Pid) ->
     call(Pid, stop).
 
 send_pdu(Pid, Pdu, Vsn, MsgData, Addr, Port) ->
-    send_pdu(Pid, Pdu, Vsn, MsgData, Addr, Port, undefined).
+    send_pdu(Pid, Pdu, Vsn, MsgData, Addr, Port, ?DEFAULT_EXTRA_INFO).
 
 send_pdu(Pid, Pdu, Vsn, MsgData, Addr, Port, ExtraInfo) 
   when is_record(Pdu, pdu) ->
@@ -380,13 +380,14 @@ handle_call(Req, From, State) ->
 %%          {noreply, State, Timeout} |
 %%          {stop, Reason, State}            (terminate/2 is called)
 %%--------------------------------------------------------------------
-handle_cast({send_pdu, Pdu, Vsn, MsgData, Addr, Port, _ExtraInfo}, State) ->
+handle_cast({send_pdu, Pdu, Vsn, MsgData, Addr, Port, ExtraInfo}, State) ->
     ?vlog("received send_pdu message with"
 	  "~n   Pdu:     ~p"
 	  "~n   Vsn:     ~p"
 	  "~n   MsgData: ~p"
 	  "~n   Addr:    ~p"
 	  "~n   Port:    ~p", [Pdu, Vsn, MsgData, Addr, Port]),
+    maybe_process_extra_info(ExtraInfo), 
     maybe_handle_send_pdu(Pdu, Vsn, MsgData, Addr, Port, State), 
     {noreply, State};
 
@@ -999,6 +1000,19 @@ pdu_type_of(TrapPdu) when is_record(TrapPdu, trappdu) ->
 
 %% -------------------------------------------------------------------
 
+%% At this point this function is used during testing
+maybe_process_extra_info(?DEFAULT_EXTRA_INFO) ->
+    ok;
+maybe_process_extra_info({?SNMPM_EXTRA_INFO_TAG, Fun}) 
+  when is_function(Fun, 0) ->
+    (catch Fun()),
+    ok;
+maybe_process_extra_info(_ExtraInfo) ->
+    ok.
+    
+
+%% -------------------------------------------------------------------
+
 t() ->
     {A,B,C} = erlang:now(),
     A*1000000000+B*1000+(C div 1000).
diff --git a/lib/snmp/src/manager/snmpm_server.erl b/lib/snmp/src/manager/snmpm_server.erl
index d64b5b1d53..b8d7cf6375 100644
--- a/lib/snmp/src/manager/snmpm_server.erl
+++ b/lib/snmp/src/manager/snmpm_server.erl
@@ -32,14 +32,14 @@
 
 	 register_user/4, register_user_monitor/4, unregister_user/1, 
 
-	 sync_get/4,       sync_get/5,       sync_get/6, 
-	 async_get/4,      async_get/5,      async_get/6, 
-	 sync_get_next/4,  sync_get_next/5,  sync_get_next/6, 
-	 async_get_next/4, async_get_next/5, async_get_next/6, 
-	 sync_get_bulk/6,  sync_get_bulk/7,  sync_get_bulk/8, 
-	 async_get_bulk/6, async_get_bulk/7, async_get_bulk/8, 
-	 sync_set/4,       sync_set/5,       sync_set/6, 
-	 async_set/4,      async_set/5,      async_set/6, 
+	 sync_get2/4, 
+	 async_get2/4, 
+	 sync_get_next2/4, 
+	 async_get_next2/4, 
+	 sync_get_bulk2/6, 
+	 async_get_bulk2/6, 
+	 sync_set2/4, 
+	 async_set2/4, 
 	 cancel_async_request/2,
 
 	 %% discovery/2, discovery/3, discovery/4, discovery/5, discovery/6, 
@@ -55,6 +55,20 @@
 	]).
 
 
+%% <BACKWARD-COMPAT>
+-export([sync_get/4,       sync_get/5,       sync_get/6, 
+	 async_get/4,      async_get/5,      async_get/6, 
+	 sync_get_next/4,  sync_get_next/5,  sync_get_next/6, 
+	 async_get_next/4, async_get_next/5, async_get_next/6, 
+	 sync_get_bulk/6,  sync_get_bulk/7,  sync_get_bulk/8, 
+	 async_get_bulk/6, async_get_bulk/7, async_get_bulk/8, 
+	 sync_set/4,       sync_set/5,       sync_set/6, 
+	 async_set/4,      async_set/5,      async_set/6
+	]).
+%% </BACKWARD-COMPAT>
+
+
+
 %% Internal exports
 -export([init/1, handle_call/3, handle_cast/2, handle_info/2, 
 	 code_change/3, terminate/2]).
@@ -75,13 +89,39 @@
 
 -define(SERVER, ?MODULE).
 
--define(SYNC_GET_TIMEOUT,     5000).
--define(SYNC_SET_TIMEOUT,     5000).
--define(DEFAULT_ASYNC_EXPIRE, 5000).
--define(EXTRA_INFO,           undefined).
-
--define(SNMP_AGENT_PORT,      161).
-
+-define(DEFAULT_SYNC_TIMEOUT,           timer:seconds(5)).
+-define(DEFAULT_SYNC_GET_TIMEOUT,       ?DEFAULT_SYNC_TIMEOUT).
+-define(DEFAULT_SYNC_GET_NEXT_TIMEOUT,  ?DEFAULT_SYNC_TIMEOUT).
+-define(DEFAULT_SYNC_GET_BULK_TIMEOUT,  ?DEFAULT_SYNC_TIMEOUT).
+-define(DEFAULT_SYNC_SET_TIMEOUT,       ?DEFAULT_SYNC_TIMEOUT).
+
+-define(DEFAULT_ASYNC_TIMEOUT,          timer:seconds(5)).
+-define(DEFAULT_ASYNC_GET_TIMEOUT,      ?DEFAULT_ASYNC_TIMEOUT).
+-define(DEFAULT_ASYNC_GET_NEXT_TIMEOUT, ?DEFAULT_ASYNC_TIMEOUT).
+-define(DEFAULT_ASYNC_GET_BULK_TIMEOUT, ?DEFAULT_ASYNC_TIMEOUT).
+-define(DEFAULT_ASYNC_SET_TIMEOUT,      ?DEFAULT_ASYNC_TIMEOUT).
+
+-define(SNMP_AGENT_PORT,                161).
+
+-define(SYNC_GET_TIMEOUT(SendOpts), 
+	get_opt(timeout, ?DEFAULT_SYNC_GET_TIMEOUT, SendOpts)).
+-define(SYNC_GET_NEXT_TIMEOUT(SendOpts), 
+	get_opt(timeout, ?DEFAULT_SYNC_GET_NEXT_TIMEOUT, SendOpts)).
+-define(SYNC_GET_BULK_TIMEOUT(SendOpts), 
+	get_opt(timeout, ?DEFAULT_SYNC_GET_BULK_TIMEOUT, SendOpts)).
+-define(SYNC_SET_TIMEOUT(SendOpts), 
+	get_opt(timeout, ?DEFAULT_SYNC_SET_TIMEOUT, SendOpts)).
+
+-define(ASYNC_GET_TIMEOUT(SendOpts), 
+	get_opt(timeout, ?DEFAULT_ASYNC_GET_TIMEOUT, SendOpts)).
+-define(ASYNC_GET_NEXT_TIMEOUT(SendOpts), 
+	get_opt(timeout, ?DEFAULT_ASYNC_GET_NEXT_TIMEOUT, SendOpts)).
+-define(ASYNC_GET_BULK_TIMEOUT(SendOpts), 
+	get_opt(timeout, ?DEFAULT_ASYNC_GET_BULK_TIMEOUT, SendOpts)).
+-define(ASYNC_SET_TIMEOUT(SendOpts), 
+	get_opt(timeout, ?DEFAULT_ASYNC_SET_TIMEOUT, SendOpts)).
+
+-define(GET_EXTRA(SendOpts), get_opt(extra, ?DEFAULT_EXTRA_INFO, SendOpts)).
 
 -ifdef(snmp_debug).
 -define(GS_START_LINK(Args),
@@ -192,82 +232,140 @@ unregister_user(UserId) ->
 
 %% -- [sync] get --
 
+%% The reason why we have a sync_get2 is to simplify backward 
+%% compatibillity. 
+
+%% sync_get2(UserId, TargetName, Oids) ->
+%%     sync_get2(UserId, TargetName, Oids, []).
+sync_get2(UserId, TargetName, Oids, Opts) ->
+    call({sync_get, self(), UserId, TargetName, Oids, Opts}).
+
+
+%% <BACKWARD-COMPAT>
 sync_get(UserId, TargetName, CtxName, Oids) ->
     sync_get(UserId, TargetName, CtxName, Oids, 
-	     ?SYNC_GET_TIMEOUT).
+	     ?DEFAULT_SYNC_GET_TIMEOUT).
 
 sync_get(UserId, TargetName, CtxName, Oids, Timeout) ->
-    sync_get(UserId, TargetName, CtxName, Oids, Timeout, ?EXTRA_INFO).
+    sync_get(UserId, TargetName, CtxName, Oids, Timeout, ?DEFAULT_EXTRA_INFO).
 
 sync_get(UserId, TargetName, CtxName, Oids, Timeout, ExtraInfo) 
   when is_list(TargetName) andalso 
        is_list(CtxName) andalso 
        is_list(Oids) andalso 
        is_integer(Timeout) ->
-    call({sync_get, self(), UserId, TargetName, CtxName, Oids, Timeout, ExtraInfo}).
+    Opts = [{context, CtxName}, {timeout, Timeout}, {extra, ExtraInfo}],
+    sync_get2(UserId, TargetName, Oids, Opts).
+%% </BACKWARD-COMPAT>
+
+
 
 %% -- [async] get --
 
+%% async_get2(UserId, TargetName, Oids) ->
+%%     async_get2(UserId, TargetName, Oids, []).
+async_get2(UserId, TargetName, Oids, SendOpts) ->
+    call({async_get, self(), UserId, TargetName, Oids, SendOpts}).
+
+
+%% <BACKWARD-COMPAT>
 async_get(UserId, TargetName, CtxName, Oids) ->
     async_get(UserId, TargetName, CtxName, Oids, 
-	      ?DEFAULT_ASYNC_EXPIRE, ?EXTRA_INFO).
+	      ?DEFAULT_ASYNC_GET_TIMEOUT, ?DEFAULT_EXTRA_INFO).
 
 async_get(UserId, TargetName, CtxName, Oids, Expire) ->
-    async_get(UserId, TargetName, CtxName, Oids, Expire, ?EXTRA_INFO).
+    async_get(UserId, TargetName, CtxName, Oids, Expire, ?DEFAULT_EXTRA_INFO).
 
 async_get(UserId, TargetName, CtxName, Oids, Expire, ExtraInfo) 
   when (is_list(TargetName) andalso 
 	is_list(CtxName) andalso 
 	is_list(Oids) andalso 
 	is_integer(Expire) andalso (Expire >= 0)) ->
-    call({async_get, self(), UserId, TargetName, CtxName, Oids, Expire, 
-	  ExtraInfo}).
+    SendOpts = [{context, CtxName}, {expire, Expire}, {extra, ExtraInfo}],
+    async_get2(UserId, TargetName, Oids, SendOpts).
+%% </BACKWARD-COMPAT>
+
+
 
 %% -- [sync] get-next --
 
+%% sync_get_next2(UserId, TargetName, Oids) ->
+%%     sync_get_next2(UserId, TargetName, Oids, []).
+sync_get_next2(UserId, TargetName, Oids, SendOpts) ->
+    call({sync_get_next, self(), UserId, TargetName, Oids, SendOpts}).
+
+
+%% <BACKWARD-COMPAT>
 sync_get_next(UserId, TargetName, CtxName, Oids) ->
-    sync_get_next(UserId, TargetName, CtxName, Oids, ?SYNC_GET_TIMEOUT, 
-		  ?EXTRA_INFO).
+    sync_get_next(UserId, TargetName, CtxName, Oids, 
+		  ?DEFAULT_SYNC_GET_TIMEOUT, ?DEFAULT_EXTRA_INFO).
 
 sync_get_next(UserId, TargetName, CtxName, Oids, Timeout) ->
-    sync_get_next(UserId, TargetName, CtxName, Oids, Timeout, ?EXTRA_INFO).
+    sync_get_next(UserId, TargetName, CtxName, Oids, Timeout, 
+		  ?DEFAULT_EXTRA_INFO).
 
 sync_get_next(UserId, TargetName, CtxName, Oids, Timeout, ExtraInfo) 
   when is_list(TargetName) andalso 
        is_list(CtxName) andalso 
        is_list(Oids) andalso 
        is_integer(Timeout) ->
-    call({sync_get_next, self(), UserId, TargetName, CtxName, Oids, Timeout, 
-	  ExtraInfo}).
+    SendOpts = [{context, CtxName}, {timeout, Timeout}, {extra, ExtraInfo}],
+    sync_get_next2(UserId, TargetName, Oids, SendOpts).
+%% <BACKWARD-COMPAT>
+
+
 
 %% -- [async] get-next --
 
+%% async_get_next2(UserId, TargetName, Oids) ->
+%%     async_get_next2(UserId, TargetName, Oids, []).
+async_get_next2(UserId, TargetName, Oids, SendOpts) ->
+    call({async_get_next, self(), UserId, TargetName, Oids, SendOpts}).
+
+
 async_get_next(UserId, TargetName, CtxName, Oids) ->
     async_get_next(UserId, TargetName, CtxName, Oids, 
-		   ?DEFAULT_ASYNC_EXPIRE, ?EXTRA_INFO).
+		   ?DEFAULT_ASYNC_GET_NEXT_TIMEOUT, ?DEFAULT_EXTRA_INFO).
 
 async_get_next(UserId, TargetName, CtxName, Oids, Expire) ->
-    async_get_next(UserId, TargetName, CtxName, Oids, Expire, ?EXTRA_INFO).
+    async_get_next(UserId, TargetName, CtxName, Oids, Expire, 
+		   ?DEFAULT_EXTRA_INFO).
 
 async_get_next(UserId, TargetName, CtxName, Oids, Expire, ExtraInfo) 
   when (is_list(TargetName) andalso 
 	is_list(CtxName) andalso 
 	is_list(Oids) andalso 
 	is_integer(Expire) andalso (Expire >= 0)) ->
-    call({async_get_next, self(), UserId, TargetName, CtxName, Oids, 
-	  Expire, ExtraInfo}).
+    SendOpts = [{context, CtxName}, {expire, Expire}, {extra, ExtraInfo}],
+    async_get_next2(UserId, TargetName, Oids, SendOpts).
+
+
 
 %% -- [sync] get-bulk --
 
+%% sync_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids) ->
+%%     sync_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, []).
+sync_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, SendOpts) ->
+    %% p("sync_get_bulk2 -> entry with"
+    %%   "~n   UserId:     ~p"
+    %%   "~n   TargetName: ~p"
+    %%   "~n   NonRep:     ~p"
+    %%   "~n   MaxRep:     ~p"
+    %%   "~n   Oids:       ~p"
+    %%   "~n   SendOpts:   ~p", 
+    %%   [UserId, TargetName, NonRep, MaxRep, Oids, SendOpts]),
+    call({sync_get_bulk, self(), UserId, TargetName, 
+	  NonRep, MaxRep, Oids, SendOpts}).
+
 sync_get_bulk(UserId, TargetName, NonRep, MaxRep, CtxName, Oids) ->
     sync_get_bulk(UserId, TargetName, 
 		  NonRep, MaxRep, CtxName, Oids, 
-		  ?SYNC_GET_TIMEOUT, ?EXTRA_INFO).
+		  ?DEFAULT_SYNC_GET_TIMEOUT, ?DEFAULT_EXTRA_INFO).
 
 sync_get_bulk(UserId, TargetName, NonRep, MaxRep, CtxName, Oids, Timeout) ->
     sync_get_bulk(UserId, TargetName, 
 		  NonRep, MaxRep, CtxName, Oids, 
-		  Timeout, ?EXTRA_INFO).
+		  Timeout, ?DEFAULT_EXTRA_INFO).
 
 sync_get_bulk(UserId, TargetName, NonRep, MaxRep, CtxName, Oids, Timeout, 
 	      ExtraInfo) 
@@ -277,20 +375,28 @@ sync_get_bulk(UserId, TargetName, NonRep, MaxRep, CtxName, Oids, Timeout,
        is_list(CtxName) andalso 
        is_list(Oids) andalso 
        is_integer(Timeout) ->
-    call({sync_get_bulk, self(), UserId, TargetName, 
-	  NonRep, MaxRep, CtxName, Oids, Timeout, ExtraInfo}).
+    SendOpts = [{context, CtxName}, {timeout, Timeout}, {extra, ExtraInfo}],
+    sync_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, SendOpts).
+
 
 %% -- [async] get-bulk --
 
+%% async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids) ->
+%%     async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, []).
+async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, SendOpts) ->
+    call({async_get_bulk, self(), UserId, TargetName, NonRep, MaxRep, 
+	  Oids, SendOpts}).
+
+
 async_get_bulk(UserId, TargetName, NonRep, MaxRep, CtxName, Oids) ->
     async_get_bulk(UserId, TargetName, 
 		   NonRep, MaxRep, CtxName, Oids, 
-		   ?DEFAULT_ASYNC_EXPIRE, ?EXTRA_INFO).
+		   ?DEFAULT_ASYNC_GET_BULK_TIMEOUT, ?DEFAULT_EXTRA_INFO).
 
 async_get_bulk(UserId, TargetName, NonRep, MaxRep, CtxName, Oids, Expire) ->
     async_get_bulk(UserId, TargetName, 
 		   NonRep, MaxRep, CtxName, Oids, 
-		   Expire, ?EXTRA_INFO).
+		   Expire, ?DEFAULT_EXTRA_INFO).
 
 async_get_bulk(UserId, TargetName, NonRep, MaxRep, CtxName, Oids, Expire, 
 	       ExtraInfo) 
@@ -300,45 +406,61 @@ async_get_bulk(UserId, TargetName, NonRep, MaxRep, CtxName, Oids, Expire,
        is_list(CtxName) andalso 
        is_list(Oids) andalso 
        is_integer(Expire) ->
-    call({async_get_bulk, self(), UserId, TargetName, 
-	  NonRep, MaxRep, CtxName, Oids, Expire, ExtraInfo}).
+    SendOpts = [{context, CtxName}, {expire, Expire}, {extra, ExtraInfo}],
+    async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, SendOpts).
+
+
 
 %% -- [sync] set --
 
 %% VarsAndValues is: {PlainOid, o|s|i, Value} (unknown mibs) | {Oid, Value} 
+%% sync_set2(UserId, TargetName, VarsAndVals) ->
+%%     sync_set2(UserId, TargetName, VarsAndVals, []).
+sync_set2(UserId, TargetName, VarsAndVals, SendOpts) ->
+    call({sync_set, self(), UserId, TargetName, VarsAndVals, SendOpts}).
+
+
 sync_set(UserId, TargetName, CtxName, VarsAndVals) ->
     sync_set(UserId, TargetName, CtxName, VarsAndVals, 
-	     ?SYNC_SET_TIMEOUT, ?EXTRA_INFO).
+	     ?DEFAULT_SYNC_SET_TIMEOUT, ?DEFAULT_EXTRA_INFO).
 
 sync_set(UserId, TargetName, CtxName, VarsAndVals, Timeout) ->
     sync_set(UserId, TargetName, CtxName, VarsAndVals, 
-	     Timeout, ?EXTRA_INFO).
+	     Timeout, ?DEFAULT_EXTRA_INFO).
 
 sync_set(UserId, TargetName, CtxName, VarsAndVals, Timeout, ExtraInfo) 
   when is_list(TargetName) andalso 
        is_list(CtxName) andalso 
        is_list(VarsAndVals) andalso 
        is_integer(Timeout) ->
-    call({sync_set, self(), UserId, TargetName, 
-	  CtxName, VarsAndVals, Timeout, ExtraInfo}).
+    SendOpts = [{context, CtxName}, {timeout, Timeout}, {extra, ExtraInfo}],
+    sync_set2(UserId, TargetName, VarsAndVals, SendOpts).
+
+
 
 %% -- [async] set --
 
+%% async_set2(UserId, TargetName, VarsAndVals) ->
+%%     async_set2(UserId, TargetName, VarsAndVals, []).
+async_set2(UserId, TargetName, VarsAndVals, SendOpts) ->
+    call({async_set, self(), UserId, TargetName, VarsAndVals, SendOpts}).
+
+
 async_set(UserId, TargetName, CtxName, VarsAndVals) ->
     async_set(UserId, TargetName, CtxName, VarsAndVals, 
-	      ?DEFAULT_ASYNC_EXPIRE, ?EXTRA_INFO).
+	      ?DEFAULT_ASYNC_SET_TIMEOUT, ?DEFAULT_EXTRA_INFO).
 
 async_set(UserId, TargetName, CtxName, VarsAndVals, Expire) ->
     async_set(UserId, TargetName, CtxName, VarsAndVals, 
-	      Expire, ?EXTRA_INFO).
+	      Expire, ?DEFAULT_EXTRA_INFO).
 
 async_set(UserId, TargetName, CtxName, VarsAndVals, Expire, ExtraInfo) 
   when (is_list(TargetName) andalso 
 	is_list(CtxName) andalso 
 	is_list(VarsAndVals) andalso 
 	is_integer(Expire) andalso (Expire >= 0)) ->
-    call({async_set, self(), UserId, TargetName, 
-	  CtxName, VarsAndVals, Expire, ExtraInfo}).
+    SendOpts = [{context, CtxName}, {expire, Expire}, {extra, ExtraInfo}],
+    async_set2(UserId, TargetName, VarsAndVals, SendOpts).
 
 
 cancel_async_request(UserId, ReqId) ->
@@ -571,9 +693,26 @@ handle_call({unregister_user, UserId}, _From, State) ->
 
 %% We will reply to this request later, when the reply comes in from the
 %% agent, or when the timeout hits (unless we get an error now).
-handle_call({sync_get, Pid, UserId, TargetName, CtxName, Oids, Timeout, ExtraInfo}, 
+handle_call({sync_get, Pid, UserId, TargetName, Oids, SendOpts}, 
+	    From, State) ->
+    ?vlog("[~p,~p] received sync_get request for: "
+	  "~n   ~p", [UserId, TargetName, Oids]),
+    case (catch handle_sync_get(Pid, 
+				UserId, TargetName, Oids, SendOpts, 
+				From, State)) of
+	ok ->
+	    {noreply, State};
+	Error ->
+	    {reply, Error, State}
+    end;
+
+%% <BACKWARD-COMPAT>
+%% The only case where this would be called is during code upgrade
+handle_call({sync_get, 
+	     Pid, UserId, TargetName, CtxName, Oids, Timeout, ExtraInfo}, 
 	    From, State) ->
-    ?vlog("received sync_get [~p] request", [CtxName]),
+    ?vlog("[~p,~p,~p] received sync_get request for: "
+	  "~n   ~p", [UserId, TargetName, CtxName, Oids]),
     case (catch handle_sync_get(Pid, 
 				UserId, TargetName, CtxName, Oids, 
 				Timeout, ExtraInfo, From, State)) of
@@ -582,10 +721,30 @@ handle_call({sync_get, Pid, UserId, TargetName, CtxName, Oids, Timeout, ExtraInf
 	Error ->
 	    {reply, Error, State}
     end;
+%% </BACKWARD-COMPAT>
+
+
+handle_call({sync_get_next, Pid, UserId, TargetName, Oids, SendOpts}, 
+	    From, State) ->
+    ?vlog("[~p,~p] received sync_get_next request for: "
+	  "~n   ~p", [UserId, TargetName, SendOpts]),
+    case (catch handle_sync_get_next(Pid, 
+				     UserId, TargetName, Oids, SendOpts, 
+				     From, State)) of
+	ok ->
+	    {noreply, State};
+	Error ->
+	    {reply, Error, State}
+    end;
 
 
-handle_call({sync_get_next, Pid, UserId, TargetName, CtxName, Oids, Timeout, ExtraInfo}, From, State) ->
-    ?vlog("received sync_get_next [~p] request", [CtxName]),
+%% <BACKWARD-COMPAT>
+%% The only case where this would be called is during code upgrade
+handle_call({sync_get_next, 
+	     Pid, UserId, TargetName, CtxName, Oids, Timeout, ExtraInfo}, 
+	    From, State) ->
+    ?vlog("[~p,~p,~p] received sync_get_next request for"
+	  "~n   ~p", [UserId, TargetName, CtxName, Oids]),
     case (catch handle_sync_get_next(Pid, 
 				     UserId, TargetName, CtxName, Oids, 
 				     Timeout, ExtraInfo, From, State)) of
@@ -594,13 +753,31 @@ handle_call({sync_get_next, Pid, UserId, TargetName, CtxName, Oids, Timeout, Ext
 	Error ->
 	    {reply, Error, State}
     end;
+%% </BACKWARD-COMPAT>
 
 
 %% Check agent version? This op not in v1
+handle_call({sync_get_bulk, 
+	     Pid, UserId, TargetName, NonRep, MaxRep, Oids, SendOpts}, 
+	    From, State) ->
+    ?vlog("[~p,~p] received sync_get_bulk request for: "
+	  "~n   ~p", [UserId, TargetName, Oids]),
+    case (catch handle_sync_get_bulk(Pid, 
+				     UserId, TargetName, NonRep, MaxRep, Oids, 
+				     SendOpts, From, State)) of
+	ok ->
+	    {noreply, State};
+	Error ->
+	    {reply, Error, State}
+    end;
+
+%% <BACKWARD-COMPAT>
+%% The only case where this would be called is during code upgrade
 handle_call({sync_get_bulk, Pid, UserId, TargetName, 
 	     NonRep, MaxRep, CtxName, Oids, Timeout, ExtraInfo}, 
 	    From, State) ->
-    ?vlog("received sync_get_bulk [~p] request", [CtxName]),
+    ?vlog("[~p,~p] received sync_get_bulk request for: ~p"
+	  "~n   ~p", [UserId, TargetName, CtxName, Oids]),
     case (catch handle_sync_get_bulk(Pid, 
 				     UserId, TargetName, CtxName, 
 				     NonRep, MaxRep, Oids, 
@@ -610,12 +787,31 @@ handle_call({sync_get_bulk, Pid, UserId, TargetName,
 	Error ->
 	    {reply, Error, State}
     end;
+%% </BACKWARD-COMPAT>
+
+
+handle_call({sync_set, 
+	     Pid, UserId, TargetName, VarsAndVals, SendOpts}, 
+	    From, State) ->
+    ?vlog("[~p,~p] received sync_set request for: "
+	  "~n   ~p", [UserId, TargetName, VarsAndVals]),
+    case (catch handle_sync_set(Pid, 
+				UserId, TargetName, VarsAndVals, SendOpts, 
+				From, State)) of
+	ok ->
+	    {noreply, State};
+	Error ->
+	    {reply, Error, State}
+    end;
 
 
+%% <BACKWARD-COMPAT>
+%% The only case where this would be called is during code upgrade
 handle_call({sync_set, Pid, UserId, TargetName, 
 	     CtxName, VarsAndVals, Timeout, ExtraInfo}, 
 	    From, State) ->
-    ?vlog("received sync_set [~p] request", [CtxName]),
+    ?vlog("[~p,~p,~p] received sync_set request for: "
+	  "~n   ~p", [UserId, TargetName, CtxName, VarsAndVals]),
     case (catch handle_sync_set(Pid, 
 				UserId, TargetName, CtxName, VarsAndVals, 
 				Timeout, ExtraInfo, From, State)) of
@@ -624,45 +820,105 @@ handle_call({sync_set, Pid, UserId, TargetName,
 	Error ->
 	    {reply, Error, State}
     end;
+%% </BACKWARD-COMPAT>
 
 
+handle_call({async_get, Pid, UserId, TargetName, Oids, SendOpts}, 
+	    _From, State) ->
+    ?vlog("[~p,~p] received async_get request for: "
+	  "~n   ~p", [UserId, TargetName, Oids]),
+    Reply = (catch handle_async_get(Pid, 
+				    UserId, TargetName, Oids, SendOpts, 
+				    State)),
+    {reply, Reply, State};
+
+
+%% <BACKWARD-COMPAT>
+%% The only case where this would be called is during code upgrade
 handle_call({async_get, Pid, UserId, TargetName, 
 	     CtxName, Oids, Expire, ExtraInfo}, 
 	    _From, State) ->
-    ?vlog("received async_get [~p] request", [CtxName]),
+    ?vlog("[~p,~p,~p] received async_get request for: "
+	  "~n   ~p", [UserId, TargetName, CtxName, Oids]),
     Reply = (catch handle_async_get(Pid, UserId, TargetName, CtxName, Oids, 
 				    Expire, ExtraInfo, State)),
     {reply, Reply, State};
+%% </BACKWARD-COMPAT>
+
+
+handle_call({async_get_next, Pid, UserId, TargetName, Oids, SendOpts}, 
+	    _From, State) ->
+    ?vlog("[~p,~p] received async_get_next request for: "
+	  "~n   ~p", [UserId, TargetName, Oids]),
+    Reply = (catch handle_async_get_next(Pid, 
+					 UserId, TargetName, Oids, SendOpts, 
+					 State)),
+    {reply, Reply, State};
 
 
+%% <BACKWARD-COMPAT>
+%% The only case where this would be called is during code upgrade
 handle_call({async_get_next, Pid, UserId, TargetName, 
 	     CtxName, Oids, Expire, ExtraInfo}, 
 	    _From, State) ->
-    ?vlog("received async_get_next [~p] request", [CtxName]),
+    ?vlog("[~p,~p,~p] received async_get_next request for: ", 
+	  [UserId, TargetName, CtxName, Oids]),
     Reply = (catch handle_async_get_next(Pid, UserId, TargetName, CtxName, 
 					 Oids, Expire, ExtraInfo, State)),
     {reply, Reply, State};
+%% </BACKWARD-COMPAT>
 
 
 %% Check agent version? This op not in v1
+handle_call({async_get_bulk, 
+	     Pid, UserId, TargetName, NonRep, MaxRep, Oids, SendOpts}, 
+	    _From, State) ->
+    ?vlog("[~p,~p] received async_get_bulk request for: "
+	  "~n   ~p", [UserId, TargetName, Oids]),
+    Reply = (catch handle_async_get_bulk(Pid, 
+					 UserId, TargetName, 
+					 NonRep, MaxRep, Oids, SendOpts, 
+					 State)),
+    {reply, Reply, State};
+
+
+%% <BACKWARD-COMPAT>
+%% The only case where this would be called is during code upgrade
 handle_call({async_get_bulk, Pid, UserId, TargetName, 
 	     NonRep, MaxRep, CtxName, Oids, Expire, ExtraInfo}, 
 	    _From, State) ->
-    ?vlog("received async_get_bulk [~p] request", [CtxName]),
+    ?vlog("[~p,~p,~p] received async_get_bulk request for: "
+	  "~n   ~p", [UserId, TargetName, CtxName, Oids]),
     Reply = (catch handle_async_get_bulk(Pid, 
 					 UserId, TargetName, CtxName, 
 					 NonRep, MaxRep, Oids, 
 					 Expire, ExtraInfo, State)),
     {reply, Reply, State};
+%% </BACKWARD-COMPAT>
+
+
+handle_call({async_set, 
+	     Pid, UserId, TargetName, VarsAndVals, SendOpts}, 
+	    _From, State) ->
+    ?vlog("[~p,~p] received async_set request for: "
+	  "~n   ~p", [UserId, TargetName, VarsAndVals]),
+    Reply = (catch handle_async_set(Pid, 
+				    UserId, TargetName, VarsAndVals, SendOpts, 
+				    State)),
+    {reply, Reply, State};
 
 
+%% <BACKWARD-COMPAT>
+%% The only case where this would be called is during code upgrade
 handle_call({async_set, Pid, UserId, TargetName, 
 	     CtxName, VarsAndVals, Expire, ExtraInfo}, 
 	    _From, State) ->
-    ?vlog("received async_set [~p] request", [CtxName]),
+    ?vlog("[~p,~p,~p] received async_set request for: "
+	  "~n   ~p", [UserId, TargetName, CtxName, VarsAndVals]),
     Reply = (catch handle_async_set(Pid, UserId, TargetName, CtxName, 
 				    VarsAndVals, Expire, ExtraInfo, State)),
     {reply, Reply, State};
+%% </BACKWARD-COMPAT>
 
 
 handle_call({cancel_async_request, UserId, ReqId}, _From, State) ->
@@ -901,36 +1157,46 @@ terminate(Reason, #state{gct = GCT}) ->
 
 handle_sync_get(Pid, UserId, TargetName, CtxName, Oids, Timeout, ExtraInfo, 
 		From, State) ->    
+    SendOpts = 
+	[
+	 {context, CtxName},
+	 {timeout, Timeout},
+	 {extra,   ExtraInfo}
+	],
+    handle_sync_get(Pid, UserId, TargetName, Oids, SendOpts, From, State).
+
+handle_sync_get(Pid, UserId, TargetName, Oids, SendOpts, From, State) -> 
     ?vtrace("handle_sync_get -> entry with"
 	    "~n   Pid:        ~p"
 	    "~n   UserId:     ~p"
 	    "~n   TargetName: ~p"
-	    "~n   CtxName:    ~p"
 	    "~n   Oids:       ~p"
-	    "~n   Timeout:    ~p"
+	    "~n   SendOpts:   ~p"
 	    "~n   From:       ~p", 
-	    [Pid, UserId, TargetName, CtxName, Oids, Timeout, From]),
-    case agent_data(TargetName, CtxName) of
+	    [Pid, UserId, TargetName, Oids, SendOpts, From]),
+    case agent_data(TargetName, SendOpts) of
 	{ok, RegType, Addr, Port, Vsn, MsgData} ->
 	    ?vtrace("handle_sync_get -> send a ~p message", [Vsn]),
-	    ReqId  = send_get_request(Oids, Vsn, MsgData, Addr, Port, 
-				      ExtraInfo, State),
+	    Extra   = ?GET_EXTRA(SendOpts), 
+	    ReqId   = send_get_request(Oids, Vsn, MsgData, 
+				       Addr, Port, Extra, State),
 	    ?vdebug("handle_sync_get -> ReqId: ~p", [ReqId]),
-	    Msg    = {sync_timeout, ReqId, From},
-	    Ref    = erlang:send_after(Timeout, self(), Msg),
-	    MonRef = erlang:monitor(process, Pid),
+	    Msg     = {sync_timeout, ReqId, From},
+	    Timeout = ?SYNC_GET_TIMEOUT(SendOpts), 
+	    Ref     = erlang:send_after(Timeout, self(), Msg),
+	    MonRef  = erlang:monitor(process, Pid),
 	    ?vtrace("handle_sync_get -> MonRef: ~p", [MonRef]),
-	    Req    = #request{id       = ReqId,
-			      user_id  = UserId, 
-			      reg_type = RegType, 
-			      target   = TargetName, 
-			      addr     = Addr,
-			      port     = Port,
-			      type     = get, 
-			      data     = MsgData, 
-			      ref      = Ref, 
-			      mon      = MonRef, 
-			      from     = From},
+	    Req     = #request{id       = ReqId,
+			       user_id  = UserId, 
+			       reg_type = RegType, 
+			       target   = TargetName, 
+			       addr     = Addr,
+			       port     = Port,
+			       type     = get, 
+			       data     = MsgData, 
+			       ref      = Ref, 
+			       mon      = MonRef, 
+			       from     = From},
 	    ets:insert(snmpm_request_table, Req),
 	    ok;
 	Error ->
@@ -940,39 +1206,49 @@ handle_sync_get(Pid, UserId, TargetName, CtxName, Oids, Timeout, ExtraInfo,
 	    Error
     end.
     
-
 handle_sync_get_next(Pid, UserId, TargetName, CtxName, Oids, Timeout, 
 		     ExtraInfo, From, State) ->
+    SendOpts = 
+	[
+	 {context, CtxName},
+	 {timeout, Timeout},
+	 {extra,   ExtraInfo}
+	],
+    handle_sync_get_next(Pid, UserId, TargetName, Oids, SendOpts, From, State).
+
+handle_sync_get_next(Pid, UserId, TargetName, Oids, SendOpts, 
+		     From, State) ->
     ?vtrace("handle_sync_get_next -> entry with"
 	    "~n   Pid:        ~p"
 	    "~n   UserId:     ~p"
 	    "~n   TargetName: ~p"
-	    "~n   CtxName:    ~p"
 	    "~n   Oids:       ~p"
-	    "~n   Timeout:    ~p"
+	    "~n   SendOpts:   ~p"
 	    "~n   From:       ~p", 
-	    [Pid, UserId, TargetName, CtxName, Oids, Timeout, From]),
-    case agent_data(TargetName, CtxName) of
+	    [Pid, UserId, TargetName, Oids, SendOpts, From]),
+    case agent_data(TargetName, SendOpts) of
 	{ok, RegType, Addr, Port, Vsn, MsgData} ->
 	    ?vtrace("handle_sync_get_next -> send a ~p message", [Vsn]),
-	    ReqId  = send_get_next_request(Oids, Vsn, MsgData, 
-					   Addr, Port, ExtraInfo, State),
+	    Extra   = ?GET_EXTRA(SendOpts), 
+	    ReqId   = send_get_next_request(Oids, Vsn, MsgData, 
+					    Addr, Port, Extra, State),
 	    ?vdebug("handle_sync_get_next -> ReqId: ~p", [ReqId]),
-	    Msg    = {sync_timeout, ReqId, From},
-	    Ref    = erlang:send_after(Timeout, self(), Msg),
-	    MonRef = erlang:monitor(process, Pid),
+	    Msg     = {sync_timeout, ReqId, From},
+	    Timeout = ?SYNC_GET_NEXT_TIMEOUT(SendOpts), 
+	    Ref     = erlang:send_after(Timeout, self(), Msg),
+	    MonRef  = erlang:monitor(process, Pid),
 	    ?vtrace("handle_sync_get_next -> MonRef: ~p", [MonRef]),
-	    Req    = #request{id       = ReqId,
-			      user_id  = UserId, 
-			      reg_type = RegType, 
-			      target   = TargetName, 
-			      addr     = Addr,
-			      port     = Port,
-			      type     = get_next, 
-			      data     = MsgData, 
-			      ref      = Ref, 
-			      mon      = MonRef, 
-			      from     = From},
+	    Req     = #request{id       = ReqId,
+			       user_id  = UserId, 
+			       reg_type = RegType, 
+			       target   = TargetName, 
+			       addr     = Addr,
+			       port     = Port,
+			       type     = get_next, 
+			       data     = MsgData, 
+			       ref      = Ref, 
+			       mon      = MonRef, 
+			       from     = From},
 	    ets:insert(snmpm_request_table, Req),
 	    ok;
 
@@ -987,39 +1263,50 @@ handle_sync_get_next(Pid, UserId, TargetName, CtxName, Oids, Timeout,
 handle_sync_get_bulk(Pid, UserId, TargetName, CtxName, 
 		     NonRep, MaxRep, Oids, Timeout, 
 		     ExtraInfo, From, State) ->
+    SendOpts = 
+	[
+	 {context, CtxName},
+	 {timeout, Timeout},
+	 {extra,   ExtraInfo}
+	],
+    handle_sync_get_bulk(Pid, UserId, TargetName, NonRep, MaxRep, Oids, 
+			 SendOpts, From, State).
+
+handle_sync_get_bulk(Pid, UserId, TargetName, NonRep, MaxRep, Oids, SendOpts, 
+		     From, State) ->
     ?vtrace("handle_sync_get_bulk -> entry with"
 	    "~n   Pid:        ~p"
 	    "~n   UserId:     ~p"
 	    "~n   TargetName: ~p"
-	    "~n   CtxName:    ~p"
 	    "~n   NonRep:     ~p"
 	    "~n   MaxRep:     ~p"
 	    "~n   Oids:       ~p"
-	    "~n   Timeout:    ~p"
+	    "~n   SendOpts:   ~p"
 	    "~n   From:       ~p", 
-	    [Pid, UserId, TargetName, CtxName, NonRep, MaxRep, Oids, 
-	     Timeout, From]),
-    case agent_data(TargetName, CtxName) of
+	    [Pid, UserId, TargetName, NonRep, MaxRep, Oids, SendOpts, From]),
+    case agent_data(TargetName, SendOpts) of
 	{ok, RegType, Addr, Port, Vsn, MsgData} ->
 	    ?vtrace("handle_sync_get_bulk -> send a ~p message", [Vsn]),
-	    ReqId  = send_get_bulk_request(Oids, Vsn, MsgData, Addr, Port, 
-					   NonRep, MaxRep, ExtraInfo, State),
+	    Extra   = ?GET_EXTRA(SendOpts), 
+	    ReqId   = send_get_bulk_request(Oids, Vsn, MsgData, Addr, Port, 
+					    NonRep, MaxRep, Extra, State),
 	    ?vdebug("handle_sync_get_bulk -> ReqId: ~p", [ReqId]),
-	    Msg    = {sync_timeout, ReqId, From},
-	    Ref    = erlang:send_after(Timeout, self(), Msg),
-	    MonRef = erlang:monitor(process, Pid),
+	    Msg     = {sync_timeout, ReqId, From},
+	    Timeout = ?SYNC_GET_BULK_TIMEOUT(SendOpts), 
+	    Ref     = erlang:send_after(Timeout, self(), Msg),
+	    MonRef  = erlang:monitor(process, Pid),
 	    ?vtrace("handle_sync_get_bulk -> MonRef: ~p", [MonRef]),
-	    Req    = #request{id       = ReqId,
-			      user_id  = UserId, 
-			      reg_type = RegType, 
-			      target   = TargetName, 
-			      addr     = Addr,
-			      port     = Port,
-			      type     = get_bulk, 
-			      data     = MsgData, 
-			      ref      = Ref, 
-			      mon      = MonRef, 
-			      from     = From},
+	    Req     = #request{id       = ReqId,
+			       user_id  = UserId, 
+			       reg_type = RegType, 
+			       target   = TargetName, 
+			       addr     = Addr,
+			       port     = Port,
+			       type     = get_bulk, 
+			       data     = MsgData, 
+			       ref      = Ref, 
+			       mon      = MonRef, 
+			       from     = From},
 	    ets:insert(snmpm_request_table, Req),
 	    ok;
 
@@ -1033,36 +1320,47 @@ handle_sync_get_bulk(Pid, UserId, TargetName, CtxName,
 
 handle_sync_set(Pid, UserId, TargetName, CtxName, VarsAndVals, Timeout, 
 		ExtraInfo, From, State) ->
+    SendOpts = 
+	[
+	 {context, CtxName},
+	 {timeout, Timeout},
+	 {extra,   ExtraInfo}
+	],
+    handle_sync_set(Pid, UserId, TargetName, VarsAndVals, SendOpts, 
+		    From, State).
+
+handle_sync_set(Pid, UserId, TargetName, VarsAndVals, SendOpts, From, State) ->
     ?vtrace("handle_sync_set -> entry with"
 	    "~n   Pid:         ~p"
 	    "~n   UserId:      ~p"
 	    "~n   TargetName:  ~p"
-	    "~n   CtxName:     ~p"
 	    "~n   VarsAndVals: ~p"
-	    "~n   Timeout:     ~p"
+	    "~n   SendOpts:    ~p"
 	    "~n   From:        ~p", 
-	    [Pid, UserId, TargetName, CtxName, VarsAndVals, Timeout, From]),
-    case agent_data(TargetName, CtxName) of
+	    [Pid, UserId, TargetName, VarsAndVals, From]),
+    case agent_data(TargetName, SendOpts) of
 	{ok, RegType, Addr, Port, Vsn, MsgData} ->
 	    ?vtrace("handle_sync_set -> send a ~p message", [Vsn]),
-	    ReqId  = send_set_request(VarsAndVals, Vsn, MsgData, 
-				      Addr, Port, ExtraInfo, State),
+	    Extra   = ?GET_EXTRA(SendOpts), 
+	    ReqId   = send_set_request(VarsAndVals, Vsn, MsgData, 
+				       Addr, Port, Extra, State),
 	    ?vdebug("handle_sync_set -> ReqId: ~p", [ReqId]),
-	    Msg    = {sync_timeout, ReqId, From},
-	    Ref    = erlang:send_after(Timeout, self(), Msg),
-            MonRef = erlang:monitor(process, Pid),
+	    Msg     = {sync_timeout, ReqId, From},
+	    Timeout = ?SYNC_SET_TIMEOUT(SendOpts), 
+	    Ref     = erlang:send_after(Timeout, self(), Msg),
+            MonRef  = erlang:monitor(process, Pid),
 	    ?vtrace("handle_sync_set -> MonRef: ~p", [MonRef]),
-	    Req    = #request{id       = ReqId,
-			      user_id  = UserId, 
-			      reg_type = RegType, 
-			      target   = TargetName, 
-			      addr     = Addr,
-			      port     = Port,
-			      type     = set, 
-			      data     = MsgData, 
-			      ref      = Ref, 
-			      mon      = MonRef, 
-			      from     = From},
+	    Req     = #request{id       = ReqId,
+			       user_id  = UserId, 
+			       reg_type = RegType, 
+			       target   = TargetName, 
+			       addr     = Addr,
+			       port     = Port,
+			       type     = set, 
+			       data     = MsgData, 
+			       ref      = Ref, 
+			       mon      = MonRef, 
+			       from     = From},
 	    ets:insert(snmpm_request_table, Req),
 	    ok;
 
@@ -1076,20 +1374,30 @@ handle_sync_set(Pid, UserId, TargetName, CtxName, VarsAndVals, Timeout,
  
 handle_async_get(Pid, UserId, TargetName, CtxName, Oids, Expire, ExtraInfo, 
 		 State) ->
+    SendOpts = 
+	[
+	 {context, CtxName},
+	 {timeout, Expire},
+	 {extra,   ExtraInfo}
+	],
+    handle_async_get(Pid, UserId, TargetName, Oids, SendOpts, State).
+
+handle_async_get(Pid, UserId, TargetName, Oids, SendOpts, State) ->
     ?vtrace("handle_async_get -> entry with"
 	    "~n   Pid:        ~p"
 	    "~n   UserId:     ~p"
 	    "~n   TargetName: ~p"
-	    "~n   CtxName:    ~p"
 	    "~n   Oids:       ~p"
-	    "~n   Expire:     ~p",
-	    [Pid, UserId, TargetName, CtxName, Oids, Expire]),
-    case agent_data(TargetName, CtxName) of
+	    "~n   SendOpts:   ~p",
+	    [Pid, UserId, TargetName, Oids, SendOpts]),
+    case agent_data(TargetName, SendOpts) of
 	{ok, RegType, Addr, Port, Vsn, MsgData} ->
 	    ?vtrace("handle_async_get -> send a ~p message", [Vsn]),
+	    Extra  = ?GET_EXTRA(SendOpts), 
 	    ReqId  = send_get_request(Oids, Vsn, MsgData, Addr, Port, 
-				      ExtraInfo, State),
+				      Extra, State),
 	    ?vdebug("handle_async_get -> ReqId: ~p", [ReqId]),
+	    Expire = ?ASYNC_GET_TIMEOUT(SendOpts), 
 	    Req    = #request{id       = ReqId,
 			      user_id  = UserId, 
 			      reg_type = RegType, 
@@ -1114,20 +1422,30 @@ handle_async_get(Pid, UserId, TargetName, CtxName, Oids, Expire, ExtraInfo,
 
 handle_async_get_next(Pid, UserId, TargetName, CtxName, Oids, Expire, 
 		      ExtraInfo, State) ->
+    SendOpts = 
+	[
+	 {context, CtxName},
+	 {timeout, Expire},
+	 {extra,   ExtraInfo}
+	],
+    handle_async_get_next(Pid, UserId, TargetName, Oids, SendOpts, State).
+
+handle_async_get_next(Pid, UserId, TargetName, Oids, SendOpts, State) ->
     ?vtrace("handle_async_get_next -> entry with"
 	    "~n   Pid:        ~p"
 	    "~n   UserId:     ~p"
 	    "~n   TargetName: ~p"
-	    "~n   CtxName:    ~p"
 	    "~n   Oids:       ~p"
-	    "~n   Expire:     ~p",
-	    [Pid, UserId, TargetName, CtxName, Oids, Expire]),
-    case agent_data(TargetName, CtxName) of
+	    "~n   SendOpts:   ~p",
+	    [Pid, UserId, TargetName, Oids, SendOpts]),
+    case agent_data(TargetName, SendOpts) of
 	{ok, RegType, Addr, Port, Vsn, MsgData} ->
 	    ?vtrace("handle_async_get_next -> send a ~p message", [Vsn]),
+	    Extra  = ?GET_EXTRA(SendOpts), 
 	    ReqId  = send_get_next_request(Oids, Vsn, MsgData, 
-					   Addr, Port, ExtraInfo, State),
+					   Addr, Port, Extra, State),
 	    ?vdebug("handle_async_get_next -> ReqId: ~p", [ReqId]),
+	    Expire = ?ASYNC_GET_NEXT_TIMEOUT(SendOpts), 
 	    Req    = #request{id       = ReqId,
 			      user_id  = UserId, 
 			      reg_type = RegType, 
@@ -1153,22 +1471,36 @@ handle_async_get_next(Pid, UserId, TargetName, CtxName, Oids, Expire,
 handle_async_get_bulk(Pid, UserId, TargetName, CtxName, 
 		      NonRep, MaxRep, Oids, Expire, 
 		      ExtraInfo, State) ->
+    SendOpts = 
+	[
+	 {context, CtxName},
+	 {timeout, Expire},
+	 {extra,   ExtraInfo}
+	],
+    handle_async_get_bulk(Pid, 
+			  UserId, TargetName, NonRep, MaxRep, Oids, SendOpts, 
+			  State).
+
+handle_async_get_bulk(Pid, 
+		      UserId, TargetName, NonRep, MaxRep, Oids, SendOpts, 
+		      State) ->
     ?vtrace("handle_async_get_bulk -> entry with"
 	    "~n   Pid:        ~p"
 	    "~n   UserId:     ~p"
 	    "~n   TargetName: ~p"
-	    "~n   CtxName:    ~p"
 	    "~n   NonRep:     ~p"
 	    "~n   MaxRep:     ~p"
 	    "~n   Oids:       ~p"
-	    "~n   Expire:     ~p", 
-	    [Pid, UserId, TargetName, CtxName, NonRep, MaxRep, Oids, Expire]),
-    case agent_data(TargetName, CtxName) of
+	    "~n   SendOpts:   ~p", 
+	    [Pid, UserId, TargetName, NonRep, MaxRep, Oids, SendOpts]),
+    case agent_data(TargetName, SendOpts) of
 	{ok, RegType, Addr, Port, Vsn, MsgData} ->
 	    ?vtrace("handle_async_get_bulk -> send a ~p message", [Vsn]),
+	    Extra  = ?GET_EXTRA(SendOpts), 
 	    ReqId  = send_get_bulk_request(Oids, Vsn, MsgData, Addr, Port, 
-					   NonRep, MaxRep, ExtraInfo, State),
+					   NonRep, MaxRep, Extra, State),
 	    ?vdebug("handle_async_get_bulk -> ReqId: ~p", [ReqId]),
+	    Expire = ?ASYNC_GET_BULK_TIMEOUT(SendOpts), 
 	    Req    = #request{id       = ReqId,
 			      user_id  = UserId, 
 			      reg_type = RegType, 
@@ -1192,20 +1524,30 @@ handle_async_get_bulk(Pid, UserId, TargetName, CtxName,
 
 handle_async_set(Pid, UserId, TargetName, CtxName, VarsAndVals, Expire, 
 		 ExtraInfo, State) ->
+    SendOpts = 
+	[
+	 {context, CtxName},
+	 {timeout, Expire},
+	 {extra,   ExtraInfo}
+	],
+    handle_async_set(Pid, UserId, TargetName, VarsAndVals, SendOpts, State).
+
+handle_async_set(Pid, UserId, TargetName, VarsAndVals, SendOpts, State) ->
     ?vtrace("handle_async_set -> entry with"
 	    "~n   Pid:         ~p"
 	    "~n   UserId:      ~p"
 	    "~n   TargetName:  ~p"
-	    "~n   CtxName:     ~p"
 	    "~n   VarsAndVals: ~p"
-	    "~n   Expire:      ~p",
-	    [Pid, UserId, TargetName, CtxName, VarsAndVals, Expire]),
-    case agent_data(TargetName, CtxName) of
+	    "~n   SendOpts:    ~p",
+	    [Pid, UserId, TargetName, VarsAndVals, SendOpts]),
+    case agent_data(TargetName, SendOpts) of
 	{ok, RegType, Addr, Port, Vsn, MsgData} ->
 	    ?vtrace("handle_async_set -> send a ~p message", [Vsn]),
+	    Extra  = ?GET_EXTRA(SendOpts), 
 	    ReqId  = send_set_request(VarsAndVals, Vsn, MsgData, 
-				      Addr, Port, ExtraInfo, State),
+				      Addr, Port, Extra, State),
 	    ?vdebug("handle_async_set -> ReqId: ~p", [ReqId]),
+	    Expire = ?ASYNC_SET_TIMEOUT(SendOpts), 
 	    Req    = #request{id       = ReqId,
 			      user_id  = UserId, 
 			      reg_type = RegType, 
@@ -2798,10 +3140,7 @@ request_id() ->
 
 %%----------------------------------------------------------------------
 
-agent_data(TargetName, CtxName) ->
-    agent_data(TargetName, CtxName, []).
-
-agent_data(TargetName, CtxName, Config) ->
+agent_data(TargetName, SendOpts) ->
     case snmpm_config:agent_info(TargetName, all) of
 	{ok, Info} ->
 	    Version = agent_data_item(version, Info), 
@@ -2813,15 +3152,18 @@ agent_data(TargetName, CtxName, Config) ->
 			DefSecLevel = agent_data_item(sec_level, Info),
 			
 			EngineId    = agent_data_item(engine_id, Info),
+			CtxName     = agent_data_item(context, 
+						      SendOpts, 
+						      ?DEFAULT_CONTEXT),
 			
 			SecModel    = agent_data_item(sec_model,   
-						      Config, 
+						      SendOpts, 
 						      DefSecModel),
 			SecName     = agent_data_item(sec_name,    
-						      Config, 
+						      SendOpts, 
 						      DefSecName),
 			SecLevel    = agent_data_item(sec_level,   
-						      Config, 
+						      SendOpts, 
 						      DefSecLevel),
 			
 			{SecModel, SecName, mk_sec_level_flag(SecLevel), 
@@ -2831,10 +3173,10 @@ agent_data(TargetName, CtxName, Config) ->
 			DefSecModel = agent_data_item(sec_model, Info),
 			
 			Comm        = agent_data_item(community, 
-						      Config, 
+						      SendOpts, 
 						      DefComm),
 			SecModel    = agent_data_item(sec_model, 
-						      Config, 
+						      SendOpts, 
 						      DefSecModel),
 			
 			{Comm, SecModel}
@@ -3003,6 +3345,12 @@ default_agent_config() ->
 
 %%----------------------------------------------------------------------
 
+get_opt(Key, Default, Opts) ->
+    proplists:get_value(Key, Opts, Default).
+
+
+%%----------------------------------------------------------------------
+
 is_started(#state{net_if = _Pid, net_if_mod = _Mod}) ->
     %% Mod:is_started(Pid) and snmpm_config:is_started().
     case snmpm_config:is_started() of