manytcp test tool must tell OS to provide enough file handles

On some platforms, the default is too low to carry out all test cases

1 files changed, 14 insertions, 0 deletions

diff --git a/tests/tcpflood.c b/tests/tcpflood.c
index 32bf959d..259b84b3 100644
--- a/tests/tcpflood.c
+++ b/tests/tcpflood.c
@@ -370,6 +370,20 @@ int main(int argc, char *argv[])
 		}
 	}
 
+	if(numConnections > 20) {
+		/* if we use many (whatever this means, 20 is randomly picked)
+		 * connections, we need to make sure we have a high enough
+		 * limit. -- rgerhards, 2010-03-25
+		 */
+		struct rlimit maxFiles;
+		maxFiles.rlim_cur = numConnections + 20;
+		maxFiles.rlim_max = numConnections + 20;
+		if(setrlimit(RLIMIT_NOFILE, &maxFiles) < 0) {
+			perror("setrlimit to increase file handles failed");
+			exit(1);
+		}
+	}
+	
 	if(openConnections() != 0) {
 		printf("error opening connections\n");
 		exit(1);