[Xen-devel] [OSSTEST PATCH 01/16] rump-test-net: New test program

[Ian Jackson <ian.jackson@xxxxxxxxxxxxx>]

The rump kernel WOPR test is no more, so we reimplement it.  This test
program simply listens on a TCP socket and says hi when you connect to
it.  It's a portable program.  So far, this has been tested on Linux,
but not in the rump environment.

Signed-off-by: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
---
 rump-test-net.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 rump-test-net.c

diff --git a/rump-test-net.c b/rump-test-net.c
new file mode 100644
index 0000000..96dbb1c
--- /dev/null
+++ b/rump-test-net.c
@@ -0,0 +1,65 @@
+/*
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <assert.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <sys/fcntl.h>
+
+static int master;
+
+int main(int argc, const char *const *argv) {
+    struct sockaddr_in6 sin6;
+    int r;
+
+    assert(argc==2);
+
+    master = socket(AF_INET6,SOCK_STREAM,0);
+    if (master<0) { perror("socket"); exit(-1); }
+
+    int port = atoi(argv[1]);
+
+    memset(&sin6,0,sizeof(sin6));
+    sin6.sin6_family = AF_INET6;
+    sin6.sin6_port = htons(port);
+    sin6.sin6_addr = in6addr_any;
+
+    r = bind(master,(struct sockaddr*)&sin6,sizeof(sin6));
+    if (r) { perror("bind"); exit(-1); }
+
+    r = listen(master,5);
+    if (r) { perror("listen"); exit(-1); }
+
+    fprintf(stderr,"listening on %d\n",port);
+
+    int slave = -1;
+    for (;;) {
+       static const char message[] = "hello\r\n";
+       static const int messagel = sizeof(message)-1;
+
+       if (slave > 0) close(slave);
+
+       slave = accept(master,0,0);
+       if (slave < 0) { perror("accept"); continue; }
+
+       r = fcntl(slave, F_GETFL);
+       if (r < 0) { perror("F_GETFL"); continue; }
+       r = fcntl(slave, F_SETFL, r | O_NONBLOCK);
+       if (r < 0) { perror("F_SETFL"); continue; }
+
+       r = write(slave, message, messagel);
+       if (r < 0) { perror("write"); continue; }
+       else if (r != messagel) {
+           fprintf(stderr,"write: %d (!= %d",r,messagel);
+           continue;
+       }
+
+       r = close(slave);
+       slave = -1;
+       if (r < 0) { perror("close"); continue; }
+    }
+}
-- 
2.1.4


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