[erlang-questions] How can i communicate with a gen_server-based server

[orbitz@REDACTED]

On a complete side topic, but is using atoms for this kind of thing a  
good idea?  There are a finite number of atoms that can be held in  
the VM and they are not GC'd right?



On Mar 28, 2008, at 4:41 AM, Andreas Hillqvist wrote:
> Early guess, but dose not authserver:start_link() return {ok, PID}?.
>
> Try:
>     {ok, Pid} = authserver:start_link().
>     Pid ! {213,'root','12345'}.
>
>
> Kind regards
> Andreas Hillqvist
>
> 2008/3/28, wenew zhang <wenewboy@REDACTED>:
>> Dear All,
>>
>>    i use gen_server behavior write  a authserver
>> code:
>>
>> -module(authserver).
>>
>> -behaviour(gen_server).
>>
>> %% gen_server callbacks
>> -export([init/1, handle_call/3, handle_cast/2, handle_info/2,  
>> terminate/2,
>>         code_change/3]).
>> -export([start_link/0]).
>>
>> -include("protocol.hrl").
>> start_link() ->
>>    io:format("Authserver start_link~n"),
>>    gen_server:start_link({global, ?MODULE}, ?MODULE, [],[]).
>>
>>
>> init([]) ->
>>    process_flag(trap_exit, true),
>>    io:format("Authserver init with []~n"),
>>    {ok,0}.
>>
>> handle_call(Request, _From, State) ->
>>    {stop, {unknown_call, Request}, State}.
>>
>>
>> handle_cast(_Msg, State) ->
>>    {noreply, State}.
>>
>>
>>
>> handle_info({?PLLOGIN,Uid,Pwd},State) ->
>>    io:format("PLLogin id:~w Uid:~w   Pwd:~w~n",[?PLLOGIN,Uid,Pwd]).
>>
>> terminate(_Reason, _N) ->
>>    ok.
>>
>>
>> code_change(_OldVsn, State, _Extra) ->
>>    {ok, State}.
>>
>> %%___________________end_________________________
>>
>>
>>
>> handle_info({?PLLOGIN,Uid,Pwd},State) ->
>>    io:format("PLLogin id:~w Uid:~w   Pwd:~w~n",[?PLLOGIN,Uid,Pwd]).
>>
>> i want call this function above, send ?PLLOGIN},[Uid,Pwd])  from  
>> other node,
>> and then,authserver send some message back ,
>> i try:
>> 2> Pid=authserver:start_link().
>> Authserver start_link
>> Authserver init with []
>> {ok,<0.32.0>}
>> 3> Pid!{213,'root','12345'}.
>> ** exception error: bad argument
>>     in operator  !/2
>>        called as {ok,<0.32.0>} ! {213,root,'12345'}
>> 4>
>>
>> what can i do?
>> _______________________________________________
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>>
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