From 4529e8c8db68bc40ff80947139366514787d5130 Mon Sep 17 00:00:00 2001
From: Guus Sliepen <guus@meshlink.io>
Date: Sat, 26 Jul 2014 14:45:04 +0200
Subject: [PATCH] Add a test for the channel API.

It doesn't compile yet, so it's not included in the Makefile.
---
 test/Makefile.am   |   3 +
 test/channels.c    | 144 +++++++++++++++++++++++++++++++++++++++++++++
 test/channels.test |   4 ++
 3 files changed, 151 insertions(+)
 create mode 100644 test/channels.c
 create mode 100755 test/channels.test

diff --git a/test/Makefile.am b/test/Makefile.am
index 67893aa2..a95d22ec 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -25,3 +25,6 @@ invite_join_LDADD = ../src/libmeshlink.la
 
 sign_verify_SOURCES = sign-verify.c
 sign_verify_LDADD = ../src/libmeshlink.la
+
+channels_SOURCES = channels.c
+channels_LDADD = ../src/libmeshlink.la
diff --git a/test/channels.c b/test/channels.c
new file mode 100644
index 00000000..8327e8ed
--- /dev/null
+++ b/test/channels.c
@@ -0,0 +1,144 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "meshlink.h"
+
+volatile bool bar_reachable = false;
+volatile bool bar_responded = false;
+
+void status_cb(meshlink_handle_t *mesh, meshlink_node_t *node, bool reachable) {
+	if(!strcmp(node->name, "bar"))
+		bar_reachable = reachable;
+}
+
+void foo_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len) {
+	if(len == 5 && !memcmp(data, "Hello", 5))
+		bar_responded = true;
+}
+
+void bar_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len) {
+	// Echo the data back.
+	meshlink_channel_send(mesh, channel, data, len);
+}
+
+bool accept_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, meshlink_node_t *node, uint16_t port, const void *data, size_t len) {
+	if(port != 7)
+		return false;
+	meshlink_set_channel_receive_cb(mesh, channel, bar_receive_cb);
+	if(data)
+		bar_receive_cb(mesh, channel, data, len);
+	return true;
+}
+
+int main(int argc, char *argv[]) {
+	// Open two new meshlink instance.
+
+	meshlink_handle_t *mesh1 = meshlink_open("channels_conf.1", "foo");
+	if(!mesh1) {
+		fprintf(stderr, "Could not initialize configuration for foo\n");
+		return 1;
+	}
+
+	meshlink_handle_t *mesh2 = meshlink_open("channels_conf.2", "bar");
+	if(!mesh2) {
+		fprintf(stderr, "Could not initialize configuration for bar\n");
+		return 1;
+	}
+
+	// Import and export both side's data
+
+	meshlink_add_address(mesh1, "localhost");
+	meshlink_add_address(mesh2, "localhost");
+
+	char *data = meshlink_export(mesh1);
+	if(!data) {
+		fprintf(stderr, "Foo could not export its configuration\n");
+		return 1;
+	}
+
+	if(!meshlink_import(mesh2, data)) {
+		fprintf(stderr, "Bar could not import foo's configuration\n");
+		return 1;
+	}
+
+	free(data);
+
+	data = meshlink_export(mesh2);
+	if(!data) {
+		fprintf(stderr, "Bar could not export its configuration\n");
+		return 1;
+	}
+
+
+	if(!meshlink_import(mesh1, data)) {
+		fprintf(stderr, "Foo could not import bar's configuration\n");
+		return 1;
+	}
+
+	free(data);
+
+	// Set the channel accept callback on bar.
+	
+	meshlink_set_channel_accept_cb(mesh2, accept_cb);
+
+	// Start both instances
+
+	meshlink_set_node_status_cb(mesh1, status_cb);
+	
+	if(!meshlink_start(mesh1)) {
+		fprintf(stderr, "Foo could not start\n");
+		return 1;
+	}
+
+	if(!meshlink_start(mesh2)) {
+		fprintf(stderr, "Bar could not start\n");
+		return 1;
+	}
+
+	// Wait for the two to connect.
+
+	for(int i = 0; i < 20; i++) {
+		sleep(1);
+		if(bar_reachable)
+			break;
+	}
+
+	if(!bar_reachable) {
+		fprintf(stderr, "Bar not reachable for foo after 20 seconds\n");
+		return 1;
+	}
+
+	// Open a channel from foo to bar.
+	
+	meshlink_node_t *bar = meshlink_get_node(mesh1, "bar");
+	if(!bar) {
+		fprintf(stderr, "Foo could not find bar\n");
+		return 1;
+	}
+
+	meshlink_channel_t *channel = meshlink_channel_open(mesh1, bar, 7, foo_receive_cb, "Hello", 5);
+
+	for(int i = 0; i < 5; i++) {
+		sleep(1);
+		if(bar_responded)
+			break;
+	}
+
+	if(!bar_responded) {
+		fprintf(stderr, "Bar did not respond to foo's channel message\n");
+		return 1;
+	}
+
+	meshlink_channel_close(mesh1, channel);
+
+	// Clean up.
+
+	meshlink_stop(mesh2);
+	meshlink_stop(mesh1);
+	meshlink_close(mesh2);
+	meshlink_close(mesh1);
+
+	return 0;
+}
diff --git a/test/channels.test b/test/channels.test
new file mode 100755
index 00000000..8a46d210
--- /dev/null
+++ b/test/channels.test
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+rm -Rf channels_conf
+./channels
-- 
2.39.5