Don't try to maximize the send buffer

Get rid of code that did a binary search to maximize the send buffer
via setsockopt SO_SNDBUF. It caused problems for modern Mac users.

CHANGES

@@ -1,3 +1,6 @@
+1.13 (2024-05-01)
+    - Fixed a bug for Mac users by removing sx_maxsockbuf()
+
 1.12 (2024-02-12)
     - Fix a bug in the mikrotik printer
 

Makefile.am

@@ -17,7 +17,6 @@ bgpq4_LDADD += $(top_builddir)/compat/libcompat.la
 endif
 
 bgpq4_SOURCES=main.c extern.h printer.c expander.c \
-    sx_maxsockbuf.c \
     sx_prefix.c sx_prefix.h \
     sx_report.c sx_report.h \
     sx_slentry.c

VERSION

@@ -1 +1 @@
-1.12
+1.13

expander.c

@@ -1075,16 +1075,6 @@ bgpq_expand(struct bgpq_expander *b)
 			continue;
 		}
 
-		err = sx_maxsockbuf(fd, SO_SNDBUF);
-		if (err > 0) {
-			SX_DEBUG(debug_expander, "Acquired sendbuf of %i "
-			    "bytes\n", err);
-		} else {
-			close(fd);
-			fd = -1;
-			continue;
-		}
-
 		break;
 	}
 

extern.h

@@ -149,9 +149,6 @@ void sx_radix_tree_freeall(struct sx_radix_tree *t);
 void bgpq_prequest_freeall(struct bgpq_prequest *bpr);
 void expander_freeall(struct bgpq_expander *expander);
 
-/* s - number of opened socket, dir is either SO_SNDBUF or SO_RCVBUF */
-int sx_maxsockbuf(int s, int dir);
-
 #ifndef HAVE_STRLCPY
 size_t strlcpy(char *dst, const char *src, size_t size);
 #endif