diff --git a/zig-impl/src/bindings.zig b/zig-impl/src/bindings.zig
index 730223d..41805dd 100644
--- a/zig-impl/src/bindings.zig
+++ b/zig-impl/src/bindings.zig
@@ -31,7 +31,6 @@ export fn ipc_context_deinit (ctx: *Context) callconv(.C) void {
 }
 
 export fn ipc_write (ctx: *Context, servicefd: i32, mcontent: [*]const u8, mlen: u32) i32 {
-
     // TODO: better default length.
     var buffer: [100000]u8 = undefined;
     var fba = std.heap.FixedBufferAllocator.init(&buffer);
@@ -53,10 +52,33 @@ export fn ipc_read_fd (ctx: *Context, fd: i32, buffer: [*]u8, buflen: *usize) i3
     return 0;
 }
 
-// pub fn schedule (ctx: *Context, m: Message) !void
+export fn ipc_schedule (ctx: *Context, servicefd: i32, mcontent: [*]const u8, mlen: u32) i32 {
+    var message = Message.init(servicefd, ctx.allocator, mcontent[0..mlen]) catch return -1;
+    ctx.schedule(message) catch return -2;
+    return 0;
+}
+
+export fn ipc_wait_event(ctx: *Context, t: *u8, index: *usize, originfd: *i32, buffer: [*]u8, buflen: *usize) i32 {
+    var event = ctx.wait_event() catch return -1;
+    t.* = @enumToInt(event.t);
+    index.* = event.index;
+    originfd.* = event.origin;
+
+    if (event.m) |m| {
+        var fbs = std.io.fixedBufferStream(buffer[0..buflen.*]);
+        var writer = fbs.writer();
+        _ = writer.write(m.payload) catch return -4;
+        buflen.* = m.payload.len;
+    }
+    else {
+        buflen.* = 0;
+    }
+
+    return 0;
+}
+
 // pub fn read (ctx: *Context, index: usize) !?Message
 // 
-// pub fn wait_event(ctx: *Context) !Event
 // 
 // pub fn close_fd(ctx: *Context, fd: i32) !void
 // pub fn close(ctx: *Context, index: usize) !void
diff --git a/zig-impl/test-bindings/pong.c b/zig-impl/test-bindings/pong.c
index 0cb56b6..306dd79 100644
--- a/zig-impl/test-bindings/pong.c
+++ b/zig-impl/test-bindings/pong.c
@@ -4,7 +4,25 @@
 #define SERVICE "pong"
 #define SERVICE_LEN 4
 
+enum event_types {
+	  ERROR = 0         // A problem occured.
+	, EXTERNAL = 1      // Message received from a non IPC socket.
+	, SWITCH_RX = 2     // Message received from a switched FD.
+	, SWITCH_TX = 3     // Message sent to a switched fd.
+	, CONNECTION = 4    // New user.
+	, DISCONNECTION = 5 // User disconnected.
+	, MESSAGE = 6       // New message.
+	, TIMER = 7         // Timeout in the poll(2) function.
+	, TX = 8            // Message sent.
+};
+
+
 int main(void) {
+	direct_write_then_read();
+	wait_event();
+}
+
+int direct_write_then_read(void) {
 	int ret = 0;
 	int servicefd = 0;
 
@@ -17,8 +35,6 @@ int main(void) {
 		return 1;
 	}
 
-	printf ("Context initiated.\n");
-
 	printf ("Connect to a 'pong' service.\n");
 	ret = ipc_connect_service (ctx, &servicefd, SERVICE, SERVICE_LEN);
 
@@ -37,24 +53,13 @@ int main(void) {
 
 	char message[10000];
 	unsigned int size = 10000;
-#if 1
+
 	ret = ipc_read_fd (ctx, servicefd, message, &size);
 
 	if (ret != 0) {
 		printf ("Cannot read from the service fd: %d.\n", ret);
 		return 1;
 	}
-#else
-	// TODO: loop over ipc_wait
-	int event_type, index, originfd = 0;
-	printf ("Wait for a response.\n", ret);
-	ret = ipc_wait (&event_type, &index, &originfd, &size, message);
-
-	if (ret != 0) {
-		printf ("Error while waiting for an event.\n");
-		return 1;
-	}
-#endif
 
 	if (size == 0) {
 		printf ("No message returned.\n");
@@ -72,3 +77,107 @@ int main(void) {
 	printf ("Context freed.\n");
 	return 0;
 }
+
+int wait_event(void) {
+	int ret = 0;
+	int servicefd = 0;
+	char message[10000];
+	unsigned int size = 10000;
+	char event_type;
+	unsigned int index = 0;
+	int originfd = 0;
+	void *ctx = NULL;
+
+	printf ("Init context.\n");
+	ret = ipc_context_init (&ctx);
+
+	if (ret != 0) {
+		printf ("Cannot init context.\n");
+		return 1;
+	}
+
+	printf ("Connect to a 'pong' service.\n");
+	ret = ipc_connect_service (ctx, &servicefd, SERVICE, SERVICE_LEN);
+
+	if (ret != 0) {
+		printf ("Cannot connect to a service.\n");
+		return 1;
+	}
+
+	printf ("Let's schedule a message.\n");
+	ret = ipc_schedule (ctx, servicefd, "hello, plz bounce me", 21);
+
+	if (ret != 0) {
+		printf ("Cannot schedule a message.\n");
+		return 1;
+	}
+
+	printf ("Let's loop over events.\n");
+	char should_continue = 1;
+	unsigned int count = 0;
+	while(should_continue) {
+		size = 10000;
+		ret = ipc_wait_event (ctx, &event_type, &index, &originfd, message, &size);
+		if (ret != 0) {
+			printf ("Error while waiting for an event.\n");
+			return 1;
+		}
+
+		printf ("EVENT %u\t", count++);
+
+		switch ((enum event_types) event_type) {
+		case ERROR: {
+				printf ("Error.\n");
+				return 1;
+			}
+		case EXTERNAL: {
+				printf ("External (shouldn't happen).\n");
+				return 1;
+			}
+		case SWITCH_RX: {
+				printf ("Switch RX (shouldn't happen).\n");
+				return 1;
+			}
+		case SWITCH_TX: {
+				printf ("Switch TX (shouldn't happen).\n");
+				return 1;
+			}
+		case CONNECTION: {
+				printf ("Connection (shouldn't happen).\n");
+				return 1;
+			}
+		case DISCONNECTION: {
+				printf ("Disconnection (shouldn't happen).\n");
+				return 1;
+			}
+		case TIMER: {
+				printf ("TIMER.\n");
+				break;
+			}
+		case TX: {
+				printf ("A message has been sent.\n");
+				break;
+			}
+		case MESSAGE: {
+				if (size == 0) {
+					printf ("No message returned.\n");
+					return 1;
+				}
+
+				message[size] = '\0';
+				printf ("Response: %s.\n", message);
+				// We received the response, quitting.
+				should_continue = 0;
+				break;
+			}
+		}
+	}
+
+	printf ("Deinit context\n");
+	ipc_context_deinit (ctx);
+
+	free(ctx);
+
+	printf ("Context freed.\n");
+	return 0;
+}