|
1 |
| -#!/usr/bin/env bash |
2 |
| -set -euo pipefail |
3 |
| - |
4 |
| -SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)" |
5 |
| -PROJECT_DIR="${SCRIPT_DIR}/.." |
6 |
| - |
7 |
| -# Colors |
8 |
| -GREEN='\033[0;32m' |
9 |
| -RED='\033[0;31m' |
10 |
| -NC='\033[0m' |
11 |
| - |
12 |
| -log_info() { echo -e "${GREEN}[INFO]${NC} $1"; } |
13 |
| -log_error() { echo -e "${RED}[ERROR]${NC} $1"; } |
14 |
| - |
15 |
| -main() { |
16 |
| - log_info "Setting up nim echo server for interop testing..." |
17 |
| - |
18 |
| - # Check if nim is available |
19 |
| - if ! command -v nim &> /dev/null || ! command -v nimble &> /dev/null; then |
20 |
| - log_error "Nim not found. Please install nim first." |
21 |
| - exit 1 |
22 |
| - fi |
23 |
| - |
24 |
| - cd "${PROJECT_DIR}" |
25 |
| - |
26 |
| - # Create logs directory |
27 |
| - mkdir -p logs |
28 |
| - |
29 |
| - # Check if binary already exists |
30 |
| - if [[ -f "nim_echo_server" ]]; then |
31 |
| - log_info "nim_echo_server already exists, skipping build" |
32 |
| - return 0 |
33 |
| - fi |
34 |
| - |
35 |
| - log_info "Installing nim-libp2p globally..." |
36 |
| - # Install libp2p globally so nim can find it |
37 |
| - nimble install -y libp2p |
38 |
| - |
39 |
| - log_info "Building nim echo server..." |
40 |
| - # Compile the echo server |
41 |
| - nim c \ |
42 |
| - -d:release \ |
43 |
| - -d:chronicles_log_level=INFO \ |
44 |
| - --opt:speed \ |
45 |
| - -d:libp2p_quic_support \ |
46 |
| - -d:ssl \ |
47 |
| - --mm:orc \ |
48 |
| - -o:nim_echo_server \ |
49 |
| - nim_echo_server.nim |
50 |
| - |
51 |
| - # Verify binary was created |
52 |
| - if [[ -f "nim_echo_server" ]]; then |
53 |
| - log_info "✅ nim_echo_server built successfully" |
54 |
| - else |
55 |
| - log_error "❌ Failed to build nim_echo_server" |
56 |
| - exit 1 |
57 |
| - fi |
58 |
| - |
59 |
| - log_info "🎉 Setup complete!" |
60 |
| -} |
61 |
| - |
62 |
| -main "$@" |
| 1 | +{.used.} |
| 2 | + |
| 3 | +import chronos |
| 4 | +import stew/byteutils |
| 5 | +import libp2p |
| 6 | + |
| 7 | +## |
| 8 | +# Simple Echo Protocol Implementation for py-libp2p Interop Testing |
| 9 | +## |
| 10 | +const EchoCodec = "/echo/1.0.0" |
| 11 | + |
| 12 | +type EchoProto = ref object of LPProtocol |
| 13 | + |
| 14 | +proc new(T: typedesc[EchoProto]): T = |
| 15 | + proc handle(conn: Connection, proto: string) {.async: (raises: [CancelledError]).} = |
| 16 | + try: |
| 17 | + echo "Echo server: Received connection from ", conn.peerId |
| 18 | + |
| 19 | + # Read and echo messages in a loop |
| 20 | + while not conn.atEof: |
| 21 | + try: |
| 22 | + # Read length-prefixed message using nim-libp2p's readLp |
| 23 | + let message = await conn.readLp(1024 * 1024) # Max 1MB |
| 24 | + if message.len == 0: |
| 25 | + echo "Echo server: Empty message, closing connection" |
| 26 | + break |
| 27 | + |
| 28 | + let messageStr = string.fromBytes(message) |
| 29 | + echo "Echo server: Received (", message.len, " bytes): ", messageStr |
| 30 | + |
| 31 | + # Echo back using writeLp |
| 32 | + await conn.writeLp(message) |
| 33 | + echo "Echo server: Echoed message back" |
| 34 | + |
| 35 | + except CatchableError as e: |
| 36 | + echo "Echo server: Error processing message: ", e.msg |
| 37 | + break |
| 38 | + |
| 39 | + except CancelledError as e: |
| 40 | + echo "Echo server: Connection cancelled" |
| 41 | + raise e |
| 42 | + except CatchableError as e: |
| 43 | + echo "Echo server: Exception in handler: ", e.msg |
| 44 | + finally: |
| 45 | + echo "Echo server: Connection closed" |
| 46 | + await conn.close() |
| 47 | + |
| 48 | + return T.new(codecs = @[EchoCodec], handler = handle) |
| 49 | + |
| 50 | +## |
| 51 | +# Create QUIC-enabled switch |
| 52 | +## |
| 53 | +proc createSwitch(ma: MultiAddress, rng: ref HmacDrbgContext): Switch = |
| 54 | + var switch = SwitchBuilder |
| 55 | + .new() |
| 56 | + .withRng(rng) |
| 57 | + .withAddress(ma) |
| 58 | + .withQuicTransport() |
| 59 | + .build() |
| 60 | + result = switch |
| 61 | + |
| 62 | +## |
| 63 | +# Main server |
| 64 | +## |
| 65 | +proc main() {.async.} = |
| 66 | + let |
| 67 | + rng = newRng() |
| 68 | + localAddr = MultiAddress.init("/ip4/0.0.0.0/udp/0/quic-v1").tryGet() |
| 69 | + echoProto = EchoProto.new() |
| 70 | + |
| 71 | + echo "=== Nim Echo Server for py-libp2p Interop ===" |
| 72 | + |
| 73 | + # Create switch |
| 74 | + let switch = createSwitch(localAddr, rng) |
| 75 | + switch.mount(echoProto) |
| 76 | + |
| 77 | + # Start server |
| 78 | + await switch.start() |
| 79 | + |
| 80 | + # Print connection info |
| 81 | + echo "Peer ID: ", $switch.peerInfo.peerId |
| 82 | + echo "Listening on:" |
| 83 | + for addr in switch.peerInfo.addrs: |
| 84 | + echo " ", $addr, "/p2p/", $switch.peerInfo.peerId |
| 85 | + echo "Protocol: ", EchoCodec |
| 86 | + echo "Ready for py-libp2p connections!" |
| 87 | + echo "" |
| 88 | + |
| 89 | + # Keep running |
| 90 | + try: |
| 91 | + await sleepAsync(100.hours) |
| 92 | + except CancelledError: |
| 93 | + echo "Shutting down..." |
| 94 | + finally: |
| 95 | + await switch.stop() |
| 96 | + |
| 97 | +# Graceful shutdown handler |
| 98 | +proc signalHandler() {.noconv.} = |
| 99 | + echo "\nShutdown signal received" |
| 100 | + quit(0) |
| 101 | + |
| 102 | +when isMainModule: |
| 103 | + setControlCHook(signalHandler) |
| 104 | + try: |
| 105 | + waitFor(main()) |
| 106 | + except CatchableError as e: |
| 107 | + echo "Error: ", e.msg |
| 108 | + quit(1) |
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