[erlang-questions] Question about http client

[Bengt Kleberg]

Greetings,

It seems as if you are getting error reports from the SASL application
(http://www.erlang.org/doc/man/sasl_app.html). If this is the case you
could either turn it off:
"The following configuration parameters are defined for the SASL
application. See app(4) for more information about configuration
parameters: 
sasl_error_logger = Value <optional> 
Value is one of:
 
tty 
 Installs sasl_report_tty_h in the error logger. This is the default
option. 
{file,FileName} 
 Installs sasl_report_file_h in the error logger. This makes all reports
go to the file FileName. FileName is a string. 
false 
 No SASL error logger handler is installed."

or you could replace it with one that is less verbose:

"The default simple handler is called alarm_handler and it may be
exchanged by calling gen_event:swap_handler/3 as
gen_event:swap_handler(alarm_handler, {alarm_handler, swap},
{NewHandler, Args}). NewHandler:init({Args, {alarm_handler, Alarms}}) is
called. Refer to gen_event(3) for further details."


bengt

On Wed, 2009-04-15 at 13:38 -0700, mtalyans wrote:
> Hi All,
> 
> I am a rank beginner, so please bear with me:
> 
> I am fetching Web content from a set of URLs using http:request. For
> most of URLs everything works fine; however for some of them I see
> error reports on the console that look like so:
> 
> <0.49.0> spawned pid <0.50.0> (here my main process spawns another one
> to do the fetch)
> 
> =ERROR REPORT==== 15-Apr-2009::13:29:50 ===
> ** Generic server <0.51.0> terminating 
> ** Last message in was {tcp_closed,#Port<0.1570>}
> ** When Server state == {state,
>                             {request,#Ref<0.0.0.67>,<0.50.0>,0,http,
>                                 {"message.real.com",80},
>                                 "/Msg/7.0/win32",[],get,
>                                 {http_request_h,undefined,"keep-alive",
>                                     undefined,undefined,undefined,undefined,
>                                     undefined,undefined,undefined,undefined,
>                                     undefined,undefined,undefined,undefined,
>                                     undefined,undefined,"message.real.com",
>                                     undefined,undefined,undefined,undefined,
>                                     undefined,undefined,undefined,undefined,
>                                     undefined,[],undefined,undefined,
>                                     undefined,undefined,"0",undefined,
>                                     undefined,undefined,undefined,undefined,
>                                     undefined,[]},
>                                 {[],[]},
>                                 {http_options,"HTTP/1.1",5000,true,[],
>                                     undefined,true},
>                                 "http://message.real.com/Msg/7.0/win32",[],
>                                 none,[]},
>                             {tcp_session,
>                                 {{"message.real.com",80},<0.51.0>},
>                                 false,http,#Port<0.1570>,1,keep_alive},
>                             undefined,undefined,undefined,
>                             {httpc_response,parse,[nolimit,true]},
>                             {[],[]},
>                             {[],[]},
>                             new,[],nolimit,nolimit,
>                             {options,
>                                 {undefined,[]},
>                                 0,2,5,120000,2,disabled,enabled,false},
>                             {timers,
>                                 [{#Ref<0.0.0.67>,#Ref<0.0.0.77>}],
>                                 undefined},
>                             httpc_manager,undefined}
> ** Reason for termination == 
> ** session_remotly_closed
> <0.50.0>: normal clause "ERLANG: Request error session_remotly_closed
> on http://message.real.com/Msg/7.0/win32" (here my fetched process
> gets results)
> 
> As far as I can tell, session has been remotely closed. I don’t mind a
> failure like this, but I would like to get rid of the error reports,
> as I am fetching many, many URLs. I set verbose option to false, and I
> also catch everything around the call to http:request (in fact, the
> last line in the snippet is my own printout of the normal clause in
> the try/catch), all to no avail. It seems that what is terminating is
> not the process I have spawned to do the fetch.
> 
> In other cases, I get content properly fetched, and then get an error
> report with a timeout:
> 
> <0.49.0> spawned pid <0.50.0>
> <0.50.0>: normal clause "Normal completion"
> 
> =ERROR REPORT==== 15-Apr-2009::13:35:05 ===
> ** Generic server <0.51.0> terminating 
> ** Last message in was {timeout,#Ref<0.0.0.67>}
> ** When Server state == {state,undefined,
>                             {tcp_session,
>                                 {{"links.preplogic.com",80},<0.51.0>},
>                                 false,http,#Port<0.1570>,1,keep_alive},
>                             undefined,undefined,undefined,undefined,
>                             {[],[]},
>                             {[],[]},
>                             keep_alive,[],nolimit,nolimit,
>                             {options,
>                                 {undefined,[]},
>                                 0,2,5,120000,2,disabled,enabled,false},
>                             {timers,[],#Ref<0.0.0.78>},
>                             httpc_manager,undefined}
> ** Reason for termination == 
> ** {{badrecord,request},
>     [{httpc_handler,handle_info,2},
>      {gen_server,handle_msg,5},
>      {proc_lib,init_p_do_apply,3}]}
> 
> Could someone in the know help me to solve this issue?
> 
> Thanks in advance! 
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