init [skip ci]

7 files changed, 123 insertions, 0 deletions

diff --git a/.gitattributes b/.gitattributes
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+++ b/.gitattributes
@@ -0,0 +1 @@
+* text=auto
diff --git a/README.md b/README.md
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+++ b/README.md
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+[![progress-banner](https://backend.codecrafters.io/progress/dns-server/56e64eb6-693a-4a38-9144-8f7900295185)](https://app.codecrafters.io/users/codecrafters-bot?r=2qF)
+
+This is a starting point for Go solutions to the
+["Build Your Own DNS server" Challenge](https://app.codecrafters.io/courses/dns-server/overview).
+
+In this challenge, you'll build a DNS server that's capable of parsing and
+creating DNS packets, responding to DNS queries, handling various record types
+and doing recursive resolve. Along the way we'll learn about the DNS protocol,
+DNS packet format, root servers, authoritative servers, forwarding servers,
+various record types (A, AAAA, CNAME, etc) and more.
+
+**Note**: If you're viewing this repo on GitHub, head over to
+[codecrafters.io](https://codecrafters.io) to try the challenge.
+
+# Passing the first stage
+
+The entry point for your `your_server.sh` implementation is in `app/main.go`.
+Study and uncomment the relevant code, and push your changes to pass the first
+stage:
+
+```sh
+git add .
+git commit -m "pass 1st stage" # any msg
+git push origin master
+```
+
+Time to move on to the next stage!
+
+# Stage 2 & beyond
+
+Note: This section is for stages 2 and beyond.
+
+1. Ensure you have `go (1.19)` installed locally
+1. Run `./your_server.sh` to run your program, which is implemented in
+   `app/main.go`.
+1. Commit your changes and run `git push origin master` to submit your solution
+   to CodeCrafters. Test output will be streamed to your terminal.
diff --git a/app/main.go b/app/main.go
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+++ b/app/main.go
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+package main
+
+import (
+	"fmt"
+	// Uncomment this block to pass the first stage
+	// "net"
+)
+
+func main() {
+	// You can use print statements as follows for debugging, they'll be visible when running tests.
+	fmt.Println("Logs from your program will appear here!")
+
+	// Uncomment this block to pass the first stage
+	//
+	// udpAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:2053")
+	// if err != nil {
+	// 	fmt.Println("Failed to resolve UDP address:", err)
+	// 	return
+	// }
+	//
+	// udpConn, err := net.ListenUDP("udp", udpAddr)
+	// if err != nil {
+	// 	fmt.Println("Failed to bind to address:", err)
+	// 	return
+	// }
+	// defer udpConn.Close()
+	//
+	// buf := make([]byte, 512)
+	//
+	// for {
+	// 	size, source, err := udpConn.ReadFromUDP(buf)
+	// 	if err != nil {
+	// 		fmt.Println("Error receiving data:", err)
+	// 		break
+	// 	}
+	//
+	// 	receivedData := string(buf[:size])
+	// 	fmt.Printf("Received %d bytes from %s: %s\n", size, source, receivedData)
+	//
+	// 	// Create an empty response
+	// 	response := []byte{}
+	//
+	// 	_, err = udpConn.WriteToUDP(response, source)
+	// 	if err != nil {
+	// 		fmt.Println("Failed to send response:", err)
+	// 	}
+	// }
+}
diff --git a/codecrafters.yml b/codecrafters.yml
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+++ b/codecrafters.yml
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+# Set this to true if you want debug logs.
+#
+# These can be VERY verbose, so we suggest turning them off
+# unless you really need them.
+debug: false
+
+# Use this to change the Go version used to run your code
+# on Codecrafters.
+#
+# Available versions: go-1.22
+language_pack: go-1.22
diff --git a/go.mod b/go.mod
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+++ b/go.mod
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+// DON'T EDIT THIS!
+//
+// Codecrafters relies on this file being intact to run tests successfully. Any changes
+// here will not reflect when CodeCrafters tests your code, and might even cause build
+// failures.
+//
+// DON'T EDIT THIS!
+
+module github.com/codecrafters-io/dns-server-starter-go
+
+go 1.22
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/go.sum
diff --git a/your_server.sh b/your_server.sh
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--- /dev/null
+++ b/your_server.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+#
+# DON'T EDIT THIS!
+#
+# CodeCrafters uses this file to test your code. Don't make any changes here!
+#
+# DON'T EDIT THIS!
+set -e
+
+tmpFile=$(mktemp)
+
+( cd $(dirname "$0") &&
+	go build -o "$tmpFile" app/*.go )
+
+exec "$tmpFile" "$@"