[Asterisk-Users] C Manager Interface Client

[Tzafrir Cohen]

On Fri, Sep 30, 2005 at 11:51:48AM -0500, Tressler, Joshua A wrote:
> List:
>  
> This is my first manager client that I've written so please bear with me:
>  
> I am trying to write a C manager interface client to interface with our CRM software. I am having an issue while reading the data from the manager interface.
>  
> I am writing this in C and I have the following code:
> while(1)
> {
>  bzero(buffer,sizeof(buffer));
>  readCode = read(socketHandle,buffer,sizeof(buffer));
>  if(readCode < 0)
>  {
>   printf("ERROR READING FROM SOCKET\n");
>   exit(0);
>  }
>  printf("%s",buffer);
> }

This is just the main loop, right? There has to be a login before that.
Could you please post your full code? (that is: a minimal version of it
that you verified to still be problematic).

> 
> This prints out everything just as connecting to the telnet session would print it out (I do the logging in elsewhere, that isn't the problem here)
> 
> This code will read until * has nothing else for me to read from it 
> then print it all out and wait for some more stuff.  Since * seems to 
> print out on 5038 in "blocks" of text read(...) will never cut off in 
> the middle of a block.

Using a C-based program to debug that is not very helpful. telnet
localhost 5038 and see what happens in real-time.

A sniffer could also help.

> However, on one instance, and this is the only one we can reproduce the 
> results on, * puts out Event: ****** then stops, Privilege: ********, 
> then stops and then prints out the rest.  This really screws up my 
> parsing as i normally parse using a tokenizer on \r\n\r\n and pass each 
> block off to a parsing method.  I found this problem using the following code:
> while(1)
> {
>  bzero(buffer,sizeof(buffer));
>  readCode = read(socketHandle,buffer,sizeof(buffer));
>  if(readCode < 0)
>  {
>   printf("ERROR READING FROM SOCKET\n");
>   exit(0);
>  }
>  printf("%s\n",buffer);  ////////This is the main difference \n
> }
> In this case I get output as follows:
> ...
> ...
> .
> .
> Event: Hangup
>  
> Privilege: call,all
>  
> Channel: SIP/1542200-543f
> Uniqueid: 1128041150.26
> Cause: 0
> Cause-txt: Unknown
> ...
> ...
> .
> .
> In this case "Event: Hangup", "Privilege: call, all", and the rest all get passed off to my parser.  Obviously a problem.
> 
> Is * spitting this data out to me in three seperate chunks or is my socket not blocking correctly?
> 
> Any suggestions as to why this would happen?
>  
> TIA,
>  
> Joshua

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Tzafrir Cohen         | tzafrir at jbr.cohens.org.il | VIM is
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