Deadlock bug in ssl library

Inswitch Solutions <>
Fri Aug 26 16:44:00 CEST 2005


Hi,

Which OS are you using?
Some time ago I have had problems with the SSL port (ssl_esock) with Yaws in Win32 and when sending data to the server. Perhaps it's related with yours.
By increasing the buffer size of the C/C++ port and with some other changes I've managed to work it out for small size data uploads.  There're some postings in the list with the changes I made.

Hope it helps.

regards, Eduardo
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----- Original Message ----- 
From: <>
To: <>; <>
Sent: Friday, August 26, 2005 11:15 AM
Subject: Re: Deadlock bug in ssl library


> Here's a small program to reproduce the problem
> 
> 
> -module(s).
> -compile(export_all).
> 
> %% illustrates ssl deadlock problem
> 
> %% do  s:d() in an erlang shell
> %% in a terminal shell, do 
> %%     openssl s_client -connect localhost:5432 < a-1-MB-file
> 
> 
> d() ->
>     application:start(ssl),
>     {ok, L} =
> ssl:listen(5432,
>    [{active, false},
>     {certfile, "/home/share/mbj/src/yaws/ssl/cert.example"},
>     {keyfile, "/home/share/mbj/src/yaws/ssl/key.example"}]),
>     {ok, S} = ssl:accept(L),
>     {ok, Data} = ssl:recv(S, 0),
>     io:format("got ~p bytes\n", [length(Data)]),
>     timer:sleep(10000),
>     {ok, PeerName} = ssl:peername(S),
>     io:format("peername: ~p\n", [PeerName]),
>     ssl:close(S),
>     ssl:close(L).
> 
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