[erlang-bugs] [inets] httpc cookie parsing

Sergey Sinkovskiy <>
Wed Aug 28 20:30:21 CEST 2013


Some servers send empty Set-Cookie header, which leads to process crash
with following stacktrace:

{function_clause,
                      [{string,substr,
                           [[],1,-1],
                           [{file,"string.erl"},{line,207}]},
                       {httpc_cookie,parse_set_cookie,2,
                           [{file,"httpc_cookie.erl"},{line,347}]},
                       {httpc_cookie,'-parse_set_cookies/2-lc$^1/1-1-',2,
                           [{file,"httpc_cookie.erl"},{line,339}]},
                       {httpc_cookie,cookies,3,
                           [{file,"httpc_cookie.erl"},{line,202}]},
                       {httpc_handler,handle_cookies,4,
                           [{file,"httpc_handler.erl"},{line,1250}]},
                       {httpc_handler,handle_response,1,
                           [{file,"httpc_handler.erl"},{line,1186}]},
                       {gen_server,handle_msg,5,
                           [{file,"gen_server.erl"},{line,604}]},
                       {proc_lib,init_p_do_apply,3,
                           [{file,"proc_lib.erl"},{line,239}]}]},

RFC doesn't allow header to be empty, so this isn't a bug in inets.
Could such headers be just skipped from parsing?

-- 
Sergey Sinkovsky
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