@@ -81,6 +81,7 @@ LISTEN		listen

 DNS		 dns

 REV_DNS	 rev_dns

 PORT	port

+MAXBUFFER maxbuffer

 CHILDREN children

 CHECK_VIA	check_via

@@ -153,6 +154,7 @@ EAT_ABLE	[\ \t\b\r]

 <INITIAL>{DNS}	{ count(); yylval.strval=yytext; return DNS; }

 <INITIAL>{REV_DNS}	{ count(); yylval.strval=yytext; return REV_DNS; }

 <INITIAL>{PORT}	{ count(); yylval.strval=yytext; return PORT; }

+<INITIAL>{MAXBUFFER}	{ count(); yylval.strval=yytext; return MAXBUFFER; }

 <INITIAL>{CHILDREN}	{ count(); yylval.strval=yytext; return CHILDREN; }

 <INITIAL>{CHECK_VIA}	{ count(); yylval.strval=yytext; return CHECK_VIA; }

 <INITIAL>{LOADMODULE}	{ count(); yylval.strval=yytext; return LOADMODULE; }

@@ -76,6 +76,7 @@ void* f_tmp;

 %token CHILDREN

 %token CHECK_VIA

 %token LOADMODULE

+%token MAXBUFFER

@@ -146,6 +147,8 @@ assign_stm:	DEBUG EQUAL NUMBER { debug=$3; }

 		| REV_DNS EQUAL NUMBER { received_dns|= ($3)?DO_REV_DNS:0; }

 		| REV_DNS EQUAL error { yyerror("boolean value expected"); }

 		| PORT EQUAL NUMBER   { port_no=$3; }

+		| MAXBUFFER EQUAL NUMBER { maxbuffer=$3; }

+		| MAXBUFFER EQUAL error { yyerror("number expected"); }

 		| PORT EQUAL error    { yyerror("number expected"); } 

 		| CHILDREN EQUAL NUMBER { children_no=$3; }

 		| CHILDREN EQUAL error { yyerror("number expected"); } 

@@ -16,6 +16,7 @@

 extern char * cfg_file;

 extern unsigned short port_no;

+extern unsigned int maxbuffer;

 extern char * names[];

 extern unsigned long addresses[];

 extern int addresses_no;

@@ -72,6 +72,8 @@ Options:\n\

     -E           Log to stderr\n\

     -V           Version number\n\

     -h           This help message\n\

+    -b nr        Maximum receive buffer size which will not be exceeded by\n\

+                 auto-probing procedure even if  OS allows\n\

 ";

@@ -96,6 +98,9 @@ void receive_stdin_loop()

 char* cfg_file = 0;

 unsigned short port_no = 0; /* port on which we listen */

+unsigned int maxbuffer = 128*1024; /* maximum buffer size we do not want to exceed

+				      durig the auto-probing procedure; may be

+				      re-configured */

 int children_no = 0;           /* number of children processing requests */

 int debug = 0;

 int dont_fork = 0;

@@ -260,7 +265,7 @@ int main(int argc, char** argv)

 	/* process command line (get port no, cfg. file path etc) */

 	opterr=0;

-	while((c=getopt(argc,argv,"f:p:l:n:rRvdDEVh"))!=-1){

+	while((c=getopt(argc,argv,"f:p:b:l:n:rRvdDEVh"))!=-1){

 		switch(c){

 			case 'f':

 					cfg_file=optarg;

@@ -272,6 +277,14 @@ int main(int argc, char** argv)

 						goto error;

 					}

 					break;

+

+			case 'b':

+					maxbuffer=strtol(optarg, &tmp, 10);

+					if (tmp &&(*tmp)){

+                                                fprintf(stderr, "bad max buffer size number: -p %s\n", optarg);

+                                                goto error;

+                                        }

+                                        break;

 			case 'l':

 					/* add a new addr. to out address list */

 					if (addresses_no < MAX_LISTEN){