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added max chunk check on recv #460

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added max chunk check on recv #460

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24 changes: 17 additions & 7 deletions src/yaws.erl
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Original file line number Diff line number Diff line change
Expand Up @@ -2548,14 +2548,24 @@ get_nslookup_pref([], Result) ->
%% http/tcp send receive functions
%%
%%
do_recv(Sock, Num, nossl) ->
gen_tcp:recv(Sock, Num, (get(gc))#gconf.keepalive_timeout);
do_recv(Sock, Num, ssl) ->
ssl:recv(Sock, Num, (get(gc))#gconf.keepalive_timeout).
do_recv(Sock, Num, nossl, Timeout) ->
-define(MaxPacketSize, 8 * 1024 * 1024).

do_recv(Sock, Num, SSL) ->
do_recv(Sock, Num, SSL, (get(gc))#gconf.keepalive_timeout).

do_recv(Sock, Num, nossl, Timeout) when Num =< ?MaxPacketSize ->
gen_tcp:recv(Sock, Num, Timeout);
do_recv(Sock, Num, ssl, Timeout) ->
ssl:recv(Sock, Num, Timeout).
do_recv(Sock, Num, ssl, Timeout) when Num =< ?MaxPacketSize ->
ssl:recv(Sock, Num, Timeout);
do_recv(Sock, Num, SSL, Timeout) when Num > ?MaxPacketSize ->
case do_recv(Sock, ?MaxPacketSize, SSL, Timeout) of
{error, Reason} -> {error, Reason};
{ok, Data1} ->
case do_recv(Sock, Num - ?MaxPacketSize, SSL, Timeout) of
{error, Reason} -> {error, Reason};
{ok, Data2} -> {ok, <<Data1/binary, Data2/binary>>}
end
end.

cli_recv(S, Num, SslBool) ->
Res = do_recv(S, Num, SslBool),
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