Index: squid/src/client_side.c
diff -c squid/src/client_side.c:1.561.2.46 squid/src/client_side.c:1.561.2.47
*** squid/src/client_side.c:1.561.2.46	Mon Sep  1 14:39:33 2003
--- squid/src/client_side.c	Sun Dec 14 05:30:35 2003
***************
*** 1401,1406 ****
--- 1401,1410 ----
  	debug(33, 3) ("clientBuildReplyHeader: can't keep-alive, unknown body size\n");
  	request->flags.proxy_keepalive = 0;
      }
+     if (fdUsageHigh()) {
+ 	debug(33, 3) ("clientBuildReplyHeader: Not many unused FDs, can't keep-alive\n");
+ 	request->flags.proxy_keepalive = 0;
+     }
      /* Signal keep-alive if needed */
      httpHeaderPutStr(hdr,
  	http->flags.accel ? HDR_CONNECTION : HDR_PROXY_CONNECTION,
Index: squid/src/fd.c
diff -c squid/src/fd.c:1.43 squid/src/fd.c:1.43.2.1
*** squid/src/fd.c:1.43	Sun Aug 26 16:24:56 2001
--- squid/src/fd.c	Sun Dec 14 05:30:36 2003
***************
*** 178,183 ****
--- 178,194 ----
      return Squid_MaxFD - Number_FD - Opening_FD;
  }
  
+ int
+ fdUsageHigh(void)
+ {
+     int nrfree = fdNFree();
+     if (nrfree < (RESERVED_FD << 1))
+ 	return 1;
+     if (nrfree < (Number_FD >> 2))
+ 	return 1;
+     return 0;
+ }
+ 
  /* Called when we runs out of file descriptors */
  void
  fdAdjustReserved(void)
Index: squid/src/pconn.c
diff -c squid/src/pconn.c:1.31 squid/src/pconn.c:1.31.2.1
*** squid/src/pconn.c:1.31	Fri Apr 13 18:03:23 2001
--- squid/src/pconn.c	Sun Dec 14 05:30:36 2003
***************
*** 190,196 ****
      int *old;
      LOCAL_ARRAY(char, key, SQUIDHOSTNAMELEN + 10);
      LOCAL_ARRAY(char, desc, FD_DESC_SZ);
!     if (fdNFree() < (RESERVED_FD << 1)) {
  	debug(48, 3) ("pconnPush: Not many unused FDs\n");
  	comm_close(fd);
  	return;
--- 190,196 ----
      int *old;
      LOCAL_ARRAY(char, key, SQUIDHOSTNAMELEN + 10);
      LOCAL_ARRAY(char, desc, FD_DESC_SZ);
!     if (fdUsageHigh()) {
  	debug(48, 3) ("pconnPush: Not many unused FDs\n");
  	comm_close(fd);
  	return;
Index: squid/src/protos.h
diff -c squid/src/protos.h:1.420.2.20 squid/src/protos.h:1.420.2.21
*** squid/src/protos.h:1.420.2.20	Sun Aug 10 15:04:47 2003
--- squid/src/protos.h	Sun Dec 14 05:30:37 2003
***************
*** 269,274 ****
--- 269,275 ----
  extern void fdFreeMemory(void);
  extern void fdDumpOpen(void);
  extern int fdNFree(void);
+ extern int fdUsageHigh(void);
  extern void fdAdjustReserved(void);
  
  extern fileMap *file_map_create(void);