[asterisk-dev] Read application

[Volkov Alexei]

Hi!

With latest 1.4-trunk (revision 48358) i have note that Read application 
is work tragically different with unspecified filename parameter.

//
Just to remember
Read(variable[|filename[&filename2...]][|maxdigits][|option][|attempts][|timeout])
//

For example, let's take following context

context mainmenu {
s=> {jump start;};
start => {
Set(levelup=mainmenu);
Answer();
Read(NUM||1|n|1|3);
MusicOnHold();
Hangup();
};

When some incoming call routed to this context the log says:

    -- Executing [s at mainmenu:1] Goto("H323/ip$192.168.1.1:63443/4149", 
"start|1") in new stack
    -- Goto (mainmenu,start,1)
    -- Executing [start at mainmenu:1] 
Set("H323/ip$192.168.1.1:63443/4149", "levelup=mainmenu") in new stack
    -- Executing [start at mainmenu:2] 
Answer("H323/ip$192.168.1.1:63443/4149", "") in new stack
    -- Executing [start at mainmenu:3] 
Read("H323/ip$192.168.1.1:63443/4149", "NUM||1|n|1|3") in new stack
    -- Accepting a maximum of 1 digits.
    -- User disconnected

  == Spawn extension (mainmenu, start, 3) exited non-zero on 
'H323/ip$192.168.1.1:63443/4149'

And call is terminated before end user can send any DTMF digit.

But if we replace Read(NUM||1|n|1|3) with same call, but filename 
parameter specified, incoming call will be processed as assumed (short 
beep, user can send DTMF or wait for read timeout, after all music on 
hold is starting).

Following context

context mainmenu {
s=> {jump start;};
start => {
Set(levelup=mainmenu);
Answer();
Read(NUM|beep|1|n|1|3);
MusicOnHold();
Hangup();
};

produce logs

    -- Executing [s at mainmenu:1] Goto("H323/ip$192.168.1.1:65355/4150", 
"start|1") in new stack
    -- Goto (mainmenu,start,1)
    -- Executing [start at mainmenu:1] 
Set("H323/ip$192.168.1.1:65355/4150", "levelup=mainmenu") in new stack
    -- Executing [start at mainmenu:2] 
Answer("H323/ip$192.168.1.1:65355/4150", "") in new stack
    -- Executing [start at mainmenu:3] 
Read("H323/ip$192.168.1.1:65355/4150", "NUM|beep|1|n|1|3") in new stack
    -- Accepting a maximum of 1 digits.
    -- Playing 'beep' (language 'en')

    -- User entered '5'
    -- Executing [start at mainmenu:4] 
MusicOnHold("H323/ip$192.168.1.1:65355/4150", "") in new stack
    -- Started music on hold, class 'default', on 
H323/ip$192.168.1.1:65355/4150

    -- Stopped music on hold on H323/ip$192.168.1.1:65355/4150
  == Spawn extension (mainmenu, start, 4) exited non-zero on 
'H323/ip$192.168.1.1:65355/4150'

It seems to be, that  filename=NULL processed incorrectly somewhere 
inside app_read.c.

-- 
С уважением,
Волков Алексей