From 1c5d09532f18da2a7b6a2a3164380ec76ac11cc1 Mon Sep 17 00:00:00 2001
From: Mitja Felicijan <mitja.felicijan@gmail.com>
Date: Mon, 16 Sep 2024 04:07:51 +0200
Subject: Added Zig and Telnet example using Redis server as Telnet server

---
 shell.nix           |  2 +-
 zig-telnet/Makefile | 11 +++++++++++
 zig-telnet/main.zig | 21 +++++++++++++++++++++
 3 files changed, 33 insertions(+), 1 deletion(-)
 create mode 100644 zig-telnet/Makefile
 create mode 100644 zig-telnet/main.zig

diff --git a/shell.nix b/shell.nix
index 51f2e15..1c43449 100644
--- a/shell.nix
+++ b/shell.nix
@@ -7,7 +7,7 @@
 		nasm
 		tinycc
 		clang
-		zig
+		zig_0_11
 		zls
 
 		# Dev libraries and deps.
diff --git a/zig-telnet/Makefile b/zig-telnet/Makefile
new file mode 100644
index 0000000..346280d
--- /dev/null
+++ b/zig-telnet/Makefile
@@ -0,0 +1,11 @@
+default: write read
+
+write:
+	zig run main.zig
+
+read:
+	echo -e "Reading value back from Redis server"
+	{ echo "GET zig"; sleep 1; } | telnet localhost 6379
+
+redis:
+	docker run -p 6379:6379 redis
diff --git a/zig-telnet/main.zig b/zig-telnet/main.zig
new file mode 100644
index 0000000..0f396b9
--- /dev/null
+++ b/zig-telnet/main.zig
@@ -0,0 +1,21 @@
+const std = @import("std");
+
+// NOTE: Start Redis server with either `make redis` which requires
+//       Docker to be installed or provide your own Redis instance.
+
+pub fn main() !void {
+    const peer = try std.net.Address.parseIp4("127.0.0.1", 6379);
+    const stream = try std.net.tcpConnectToAddress(peer);
+    defer stream.close();
+
+    std.debug.print("Connecting to Redis server {}\n", .{peer});
+
+    // https://redis.io/docs/latest/commands/set/
+    var writer = stream.writer();
+    const size = try writer.write("SET zig zag\n");
+
+    std.debug.print("Sending to peer, total written: {d} bytes\n", .{size});
+
+    // NOTE: Check if the key was created with:
+    //       { echo "GET zig"; sleep 1; } | telnet localhost 6379
+}
-- 
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