diff options
Diffstat (limited to 'tests/tcpflood.c')
-rw-r--r-- | tests/tcpflood.c | 68 |
1 files changed, 56 insertions, 12 deletions
diff --git a/tests/tcpflood.c b/tests/tcpflood.c index 83f0d1ee..9c17fd5b 100644 --- a/tests/tcpflood.c +++ b/tests/tcpflood.c @@ -95,21 +95,49 @@ int openConnections(void) sockArray = calloc(numConnections, sizeof(int)); for(i = 0 ; i < numConnections ; ++i) { if(i % 10 == 0) { - lenMsg = sprintf(msgBuf, "\retb\b\b\b\b%5.5d", i); - write(1, msgBuf, lenMsg); + printf("\r%5.5d", i); + //lenMsg = sprintf(msgBuf, "\r%5.5d", i); + //write(1, msgBuf, lenMsg); } if(openConn(&(sockArray[i])) != 0) { printf("error in trying to open connection i=%d\n", i); return 1; } } - lenMsg = sprintf(msgBuf, "\retb\b\b\b\b%5.5d open connections\n", i); + lenMsg = sprintf(msgBuf, "\r%5.5d open connections\n", i); write(1, msgBuf, lenMsg); return 0; } +/* we also close all connections because otherwise we may get very bad + * timing for the syslogd - it may not be able to process all incoming + * messages fast enough if we immediately shut down. + * TODO: it may be an interesting excercise to handle that situation + * at the syslogd level, too + * rgerhards, 2009-04-14 + */ +void closeConnections(void) +{ + int i; + char msgBuf[128]; + size_t lenMsg; + + write(1, " close connections", sizeof(" close connections")-1); + for(i = 0 ; i < numConnections ; ++i) { + if(i % 10 == 0) { + lenMsg = sprintf(msgBuf, "\r%5.5d", i); + write(1, msgBuf, lenMsg); + } + close(sockArray[i]); + } + lenMsg = sprintf(msgBuf, "\r%5.5d close connections\n", i); + write(1, msgBuf, lenMsg); + +} + + /* send messages to the tcp connections we keep open. We use * a very basic format that helps identify the message * (via msgnum:<number>: e.g. msgnum:00000001:). This format is suitable @@ -123,14 +151,15 @@ int sendMessages(void) int i; int socknum; int lenBuf; + int lenSend; char buf[2048]; char msgBuf[128]; size_t lenMsg; srand(time(NULL)); /* seed is good enough for our needs */ - lenMsg = sprintf(msgBuf, "\retb\b\b\b\b%5.5d messages sent", 0); - write(1, msgBuf, lenMsg); + printf("Sending %d messages.\n", numMsgsToSend); + printf("\r%5.5d messages sent", 0); for(i = 0 ; i < numMsgsToSend ; ++i) { if(i < numConnections) socknum = i; @@ -139,18 +168,20 @@ int sendMessages(void) else socknum = rand() % numConnections; lenBuf = sprintf(buf, "<167>Mar 1 01:00:00 172.20.245.8 tag msgnum:%8.8d:\n", i); - if(send(sockArray[socknum], buf, lenBuf, 0) != lenBuf) { + lenSend = send(sockArray[socknum], buf, lenBuf, 0); + if(lenSend != lenBuf) { + printf("\r%5.5d\n", i); + fflush(stdout); perror("send test data"); - fprintf(stderr, "send() failed\n"); + printf("send() failed at socket %d, index %d\n", socknum, i); + fflush(stderr); return(1); } if(i % 100 == 0) { - lenMsg = sprintf(msgBuf, "\retb\b\b\b\b%5.5d", i); - write(1, msgBuf, lenMsg); + printf("\r%5.5d", i); } } - lenMsg = sprintf(msgBuf, "\retb\b\b\b\b%5.5d messages sent\n", i); - write(1, msgBuf, lenMsg); + printf("\r%5.5d messages sent\n", i); return 0; } @@ -217,9 +248,18 @@ tcpSend(char *buf, int lenBuf) int main(int argc, char *argv[]) { int ret = 0; + struct sigaction sigAct; static char buf[1024]; - setvbuf(stdout, _IONBF, buf, 48); + /* on Solaris, we do not HAVE MSG_NOSIGNAL, so for this reason + * we block SIGPIPE (not an issue for this program) + */ + memset(&sigAct, 0, sizeof(sigAct)); + sigemptyset(&sigAct.sa_mask); + sigAct.sa_handler = SIG_IGN; + sigaction(SIGPIPE, &sigAct, NULL); + + setvbuf(stdout, buf, _IONBF, 48); if(argc != 5) { printf("Invalid call of tcpflood\n"); @@ -241,5 +281,9 @@ int main(int argc, char *argv[]) printf("error sending messages\n"); exit(1); } + + //closeConnections(); + printf("End of tcpflood Run\n"); + exit(ret); } |