On HPUX 11.x, the 'ENOBUFS, No buffer space available'

error occures because the accept() cannot complete.
You will not see ENOBUFS at 10.20 because the kernel
hides any occurrence from being returned from user space.
ENOBUFS at 11.0 TCP/IP is quite possible, and could
occur intermittently. As a work-around, we are going to
ingnore ENOBUFS.

Submitted by:	madhusudan_mathihalli@hp.com
Reviewed by:	Bill Stoddard

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@92892 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/src/CHANGES b/src/CHANGES
index 5659c6bcb5ca46542fd8c4337fb3f0a07ccfc9c8..828a8ffe68028cb2dd08c51a53b63cc4f764d7cc 100644 (file)
--- a/src/CHANGES
+++ b/src/CHANGES
@@ -1,4 +1,7 @@
 Changes with Apache 1.3.23
+  *) HPUX 11.*: Do not kill the child process when accept() 
+     returns ENOBUFS on HPUX 11.*.
+     [madhusudan_mathihalli@hp.com]
 
   *) PORT: Numerous additions to Cygwin, including: defaulting
      to Posix thread accept mutex, excluding the call to

diff --git a/src/main/http_main.c b/src/main/http_main.c
index debb1fb752a3853c7e366cd0cc16a410be81f3a1..23cac62f2dcd2309b42c6df984db49f3a9e8b044 100644 (file)
--- a/src/main/http_main.c
+++ b/src/main/http_main.c
@@ -4358,6 +4358,19 @@ static void child_main(int child_num_arg)
                 * to just exit in most cases.
                 */
                 switch (errno) {
+
+#if defined(HPUX11) && defined(ENOBUFS)
+                    /* On HPUX 11.x, the 'ENOBUFS, No buffer space available'
+                     * error occures because the accept() cannot complete.
+                     * You will not see ENOBUFS at 10.20 because the kernel
+                     * hides any occurrence from being returned from user space.
+                     * ENOBUFS at 11.0 TCP/IP is quite possible, and could
+                     * occur intermittently. As a work-around, we are going to
+                     * ingnore ENOBUFS.
+                     */
+                case ENOBUFS:
+#endif
+
 #ifdef EPROTO
                    /* EPROTO on certain older kernels really means
                     * ECONNABORTED, so we need to ignore it for them.