1 files changed, 68 insertions, 0 deletions
diff --git a/schulung_tools/ipc_tcp/recv.c b/schulung_tools/ipc_tcp/recv.c
new file mode 100644
index 0000000..bd76f20
--- /dev/null
+++ b/schulung_tools/ipc_tcp/recv.c
@@ -0,0 +1,68 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+static char buffer[1024 * 1024];
+
+int main(void)
+{
+	struct sockaddr_in sa;
+	size_t count = 0;
+	int listen_s;
+	size_t size;
+	int rv;
+	int s;
+
+	listen_s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+	if (listen_s < 0)
+		return 1;
+	memset(&sa, 0, sizeof(sa));
+	sa.sin_family = AF_INET;
+	sa.sin_addr.s_addr = inet_addr("127.0.0.1");
+	sa.sin_port = htons(8806);
+
+	rv = 1;
+	if (setsockopt(listen_s, SOL_SOCKET, SO_REUSEADDR,
+		       (void *)&rv, sizeof(rv)) < 0) {
+                return 1;
+	}
+
+	if (bind(listen_s, (struct sockaddr *)&sa, sizeof(sa)) < 0) {
+		fprintf(stderr, "bind() failed: %s\n", strerror(errno));
+		return 1;
+	}
+
+	if (listen(listen_s, 1) != 0)
+		return 1;
+
+	s = accept(listen_s, NULL, NULL);
+	if (s < 0)
+		return 1;
+
+	if (read(s, &size, sizeof(size)) != sizeof(size))
+		return 1;
+
+	if (size >= sizeof(buffer))
+		size = sizeof(buffer) - 1;
+
+	while (count < size) {
+		rv = read(s, buffer + count, size - count);
+		if (rv <= 0)
+			return 1;
+		count += rv;
+	}
+
+	/* set "received" uprobe here */
+
+	printf("recv (%d): received message: %s\n", getpid(), buffer);
+
+	close(s);
+	close(listen_s);
+
+	return 0;
+}