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Cleanup internals of comms APIs

This commit is contained in:
YoshiRulz 2020-07-20 22:54:03 +10:00
parent d94ce80eaa
commit 86e82b97c1
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GPG Key ID: C4DE31C245353FB7
9 changed files with 335 additions and 459 deletions
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97
src/BizHawk.Client.Common/Api/HttpCommunication.cs Normal file
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@ -0,0 +1,97 @@
using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Threading.Tasks;
namespace BizHawk.Client.Common
{
public sealed class HttpCommunication
{
private readonly HttpClient _client = new HttpClient();
private readonly Func<byte[]> _takeScreenshotCallback;
public int DefaultTimeout { get; set; } = 500;
public string GetUrl;
public string PostUrl;
public int Timeout { get; set; }
public HttpCommunication(Func<byte[]> takeScreenshotCallback, string getURL, string postURL)
{
_takeScreenshotCallback = takeScreenshotCallback;
GetUrl = getURL;
PostUrl = postURL;
}
public string ExecGet(string url = null) => Get(url ?? GetUrl).Result;
public string ExecPost(string url = null, string payload = "") => Post(
url ?? PostUrl,
new FormUrlEncodedContent(new Dictionary<string, string> { ["payload"] = payload })
).Result;
public async Task<string> Get(string url)
{
_client.DefaultRequestHeaders.ConnectionClose = false;
var response = await _client.GetAsync(url).ConfigureAwait(false);
if (response.IsSuccessStatusCode)
{
return await response.Content.ReadAsStringAsync();
}
return null;
}
public async Task<string> Post(string url, FormUrlEncodedContent content)
{
_client.DefaultRequestHeaders.ConnectionClose = true;
HttpResponseMessage response;
try
{
response = await _client.PostAsync(url, content).ConfigureAwait(false);
}
catch (Exception e)
{
return e.ToString();
}
if (!response.IsSuccessStatusCode)
{
return null;
}
return await response.Content.ReadAsStringAsync();
}
public string SendScreenshot(string url = null, string parameter = "screenshot")
{
var url1 = url ?? PostUrl;
var content = new FormUrlEncodedContent(new Dictionary<string, string> { [parameter] = Convert.ToBase64String(_takeScreenshotCallback()) });
Task<string> postResponse = null;
var trials = 5;
while (postResponse == null && trials > 0)
{
postResponse = Post(url1, content);
trials -= 1;
}
return postResponse?.Result;
}
public void SetTimeout(int timeout)
{
if (Timeout == 0 && timeout == 0)
{
Timeout = DefaultTimeout;
}
if (timeout != 0)
{
_client.Timeout = new TimeSpan(0, 0, 0, timeout / 1000, timeout % 1000);
Timeout = timeout;
}
}
public string TestGet() => Get(GetUrl).Result;
}
}

65
src/BizHawk.Client.Common/Api/MemoryMappedFiles.cs Normal file
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@ -0,0 +1,65 @@
using System;
using System.Collections.Generic;
using System.IO.MemoryMappedFiles;
using System.Text;
namespace BizHawk.Client.Common
{
public sealed class MemoryMappedFiles
{
private readonly Dictionary<string, MemoryMappedFile> _mmfFiles = new Dictionary<string, MemoryMappedFile>();
private readonly Func<byte[]> _takeScreenshotCallback;
public string Filename;
public MemoryMappedFiles(Func<byte[]> takeScreenshotCallback, string filename)
{
_takeScreenshotCallback = takeScreenshotCallback;
Filename = filename;
}
public string ReadFromFile(string filename, int expectedSize)
{
using var viewAccessor = MemoryMappedFile.OpenExisting(filename).CreateViewAccessor();
var bytes = new byte[expectedSize];
viewAccessor.ReadArray(0, bytes, 0, expectedSize);
return Encoding.UTF8.GetString(bytes);
}
public int ScreenShotToFile() => WriteToFile(Filename, _takeScreenshotCallback());
public int WriteToFile(string filename, byte[] outputBytes)
{
int TryWrite(MemoryMappedFile m)
{
using var accessor = m.CreateViewAccessor(0, outputBytes.Length, MemoryMappedFileAccess.Write);
accessor.WriteArray(0, outputBytes, 0, outputBytes.Length);
return outputBytes.Length;
}
if (!_mmfFiles.TryGetValue(filename, out var mmfFile))
{
mmfFile = _mmfFiles[filename] = MemoryMappedFile.CreateOrOpen(filename, outputBytes.Length);
}
try
{
return TryWrite(mmfFile);
}
catch (UnauthorizedAccessException)
{
try
{
mmfFile.Dispose();
}
catch (Exception)
{
// ignored
//TODO are Dispose() implementations allowed to throw? does this one ever throw? --yoshi
}
return TryWrite(_mmfFiles[filename] = MemoryMappedFile.CreateOrOpen(filename, outputBytes.Length));
}
}
}
}

146
src/BizHawk.Client.Common/Api/SocketServer.cs Normal file
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@ -0,0 +1,146 @@
using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
namespace BizHawk.Client.Common
{
public sealed class SocketServer
{
private IPEndPoint _remoteEp;
private Socket _soc = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
private readonly Func<byte[]> _takeScreenshotCallback;
private (string HostIP, int Port) _targetAddr;
public bool Connected { get; private set; }
public string IP
{
get => _targetAddr.HostIP;
set
{
_targetAddr.HostIP = value;
Connect();
}
}
public int Port
{
get => _targetAddr.Port;
set
{
_targetAddr.Port = value;
Connect();
}
}
#if true
private const int Retries = 10;
#else
public int Retries { get; set; } = 10;
#endif
public bool Successful { get; private set; }
public SocketServer(Func<byte[]> takeScreenshotCallback, string ip, int port)
{
_takeScreenshotCallback = takeScreenshotCallback;
_targetAddr = (ip, port);
Connect();
}
private void Connect()
{
_remoteEp = new IPEndPoint(IPAddress.Parse(_targetAddr.HostIP), _targetAddr.Port);
_soc = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
_soc.Connect(_remoteEp);
Connected = true;
_soc.ReceiveTimeout = 5;
}
public string GetInfo() => $"{_targetAddr.HostIP}:{_targetAddr.Port}";
public string ReceiveMessage()
{
if (!Connected)
{
Connect();
}
var resp = "";
var receivedBytes = new byte[256];
var receivedLength = 1;
while (receivedLength > 0)
{
try
{
receivedLength = _soc.Receive(receivedBytes, receivedBytes.Length, 0);
resp += Encoding.ASCII.GetString(receivedBytes);
}
catch
{
receivedLength = 0;
}
}
return resp;
}
public int SendBytes(byte[] sendBytes)
{
try
{
return _soc.Send(sendBytes);
}
catch
{
return -1;
}
}
public string SendScreenshot(int waitingTime = 0)
{
var bmpBytes = _takeScreenshotCallback();
var sentBytes = 0;
var tries = 0;
while (sentBytes <= 0 && tries < Retries)
{
try
{
tries++;
sentBytes = SendBytes(bmpBytes);
}
catch (SocketException)
{
Connect();
sentBytes = 0;
}
if (sentBytes == -1)
{
Connect();
}
}
Successful = tries < Retries;
if (waitingTime == 0)
{
return Successful ? "Screenshot was sent" : "Screenshot could not be sent";
}
var resp = ReceiveMessage();
return resp == "" ? "Failed to get a response" : resp;
}
public int SendString(string sendString)
{
var sentBytes = SendBytes(Encoding.ASCII.GetBytes(sendString));
Successful = sentBytes > 0;
return sentBytes;
}
public void SetTimeout(int timeout) => _soc.ReceiveTimeout = timeout;
public void SocketConnected() => Connected = !_soc.Poll(1000, SelectMode.SelectRead) || _soc.Available != 0;
}
}

6
src/BizHawk.Client.EmuHawk/Api/Libraries/CommApi.cs
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@ -14,15 +14,15 @@ namespace BizHawk.Client.EmuHawk
public string SocketServerResponse() => GlobalWin.socketServer.ReceiveMessage(); public string SocketServerResponse() => GlobalWin.socketServer.ReceiveMessage();
public bool SocketServerSuccessful() => GlobalWin.socketServer.Successful(); public bool SocketServerSuccessful() => GlobalWin.socketServer.Successful;
public void SocketServerSetTimeout(int timeout) => GlobalWin.socketServer.SetTimeout(timeout); public void SocketServerSetTimeout(int timeout) => GlobalWin.socketServer.SetTimeout(timeout);
public void SocketServerSetIp(string ip) => GlobalWin.socketServer.Ip = ip; public void SocketServerSetIp(string ip) => GlobalWin.socketServer.IP = ip;
public void SetSocketServerPort(int port) => GlobalWin.socketServer.Port = port; public void SetSocketServerPort(int port) => GlobalWin.socketServer.Port = port;
public string SocketServerGetIp() => GlobalWin.socketServer.Ip; public string SocketServerGetIp() => GlobalWin.socketServer.IP;
public int SocketServerGetPort() => GlobalWin.socketServer.Port; public int SocketServerGetPort() => GlobalWin.socketServer.Port;

41
src/BizHawk.Client.EmuHawk/ArgParser.cs
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@ -3,6 +3,8 @@ using System.Collections.Generic;
using System.Linq; using System.Linq;
using System.IO; using System.IO;
using BizHawk.Client.Common;
namespace BizHawk.Client.EmuHawk namespace BizHawk.Client.EmuHawk
{ {
public class ArgParser public class ArgParser
@ -36,7 +38,7 @@ namespace BizHawk.Client.EmuHawk
public bool? audiosync = null; public bool? audiosync = null;
/// <exception cref="ArgParserException"><c>--socket_ip</c> passed without specifying <c>--socket_port</c> or vice-versa</exception> /// <exception cref="ArgParserException"><c>--socket_ip</c> passed without specifying <c>--socket_port</c> or vice-versa</exception>
public void ParseArguments(string[] args) public void ParseArguments(string[] args, Func<byte[]> takeScreenshotCallback)
{ {
for (int i = 0; i < args.Length; i++) for (int i = 0; i < args.Length; i++)
{ {
@ -147,38 +149,23 @@ namespace BizHawk.Client.EmuHawk
} }
} }
//initialize HTTP communication GlobalWin.httpCommunication = URL_get == null && URL_post == null
if (URL_get != null || URL_post != null) ? null // don't bother
: new HttpCommunication(takeScreenshotCallback, URL_get, URL_post);
GlobalWin.memoryMappedFiles = mmf_filename == null
? null // don't bother
: new MemoryMappedFiles(takeScreenshotCallback, mmf_filename);
if (socket_ip == null && socket_port <= 0)
{ {
GlobalWin.httpCommunication = new Communication.HttpCommunication(); GlobalWin.socketServer = null; // don't bother
if (URL_get != null)
{
GlobalWin.httpCommunication.GetUrl = URL_get;
}
if (URL_post != null)
{
GlobalWin.httpCommunication.PostUrl = URL_post;
}
} }
else if (socket_ip == null || socket_port <= 0)
// initialize socket server
if (socket_ip != null && socket_port > 0)
{
GlobalWin.socketServer = new Communication.SocketServer();
GlobalWin.socketServer.SetIp(socket_ip, socket_port);
}
else if (socket_ip == null ^ socket_port == 0)
{ {
throw new ArgParserException("Socket server needs both --socket_ip and --socket_port. Socket server was not started"); throw new ArgParserException("Socket server needs both --socket_ip and --socket_port. Socket server was not started");
} }
else
//initialize mapped memory files
if (mmf_filename != null)
{ {
GlobalWin.memoryMappedFiles = new Communication.MemoryMappedFiles GlobalWin.socketServer = new SocketServer(takeScreenshotCallback, socket_ip, socket_port);
{
Filename = mmf_filename
};
} }
} }

422
src/BizHawk.Client.EmuHawk/Communication.cs
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@ -1,422 +0,0 @@
using System;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Collections.Generic;
using System.Threading.Tasks;
using System.Net.Http;
using System.IO.MemoryMappedFiles;
using BizHawk.Bizware.BizwareGL;
using System.Drawing;
using BizHawk.Emulation.Common;
namespace BizHawk.Client.EmuHawk
{
public static class Communication
{
public class HttpCommunication
{
private static readonly HttpClient Client = new HttpClient();
public string PostUrl { get; set; } = null;
public string GetUrl { get; set; } = null;
private readonly ScreenShot _screenShot = new ScreenShot();
public int Timeout { get; set; }
public int DefaultTimeout { get; set; } = 500;
public void SetTimeout(int timeout)
{
if (Timeout == 0 && timeout == 0)
{
Timeout = DefaultTimeout;
}
if (timeout != 0)
{
Client.Timeout = new TimeSpan(0, 0, 0, timeout / 1000, timeout % 1000);
Timeout = timeout;
}
}
public async Task<string> Get(string url)
{
Client.DefaultRequestHeaders.ConnectionClose = false;
HttpResponseMessage response = await Client.GetAsync(url).ConfigureAwait(false);
if (response.IsSuccessStatusCode)
{
return await response.Content.ReadAsStringAsync();
}
return null;
}
public async Task<string> Post(string url, FormUrlEncodedContent content)
{
Client.DefaultRequestHeaders.ConnectionClose = true;
HttpResponseMessage response;
try
{
response = await Client.PostAsync(url, content).ConfigureAwait(false);
}
catch (Exception e)
{
return e.ToString();
}
if (!response.IsSuccessStatusCode)
{
return null;
}
return await response.Content.ReadAsStringAsync();
}
public string TestGet()
{
Task<string> getResponse = Get(GetUrl);
return getResponse.Result;
}
private string SendScreenshot(string url, string parameter)
{
int trials = 5;
var values = new Dictionary<string, string>
{
{ parameter, _screenShot.GetScreenShotAsString() }
};
FormUrlEncodedContent content = new FormUrlEncodedContent(values);
Task<string> postResponse = null;
while (postResponse == null && trials > 0)
{
postResponse = Post(url, content);
trials -= 1;
}
return postResponse.Result;
}
public string SendScreenshot()
{
return SendScreenshot(PostUrl, "screenshot");
}
public string SendScreenshot(string url)
{
return SendScreenshot(url, "screenshot");
}
public string ExecGet(string url)
{
return Get(url).Result;
}
public string ExecGet()
{
return Get(GetUrl).Result;
}
public string ExecPost(string url, string payload)
{
var values = new Dictionary<string, string>
{
["payload"] = payload
};
FormUrlEncodedContent content = new FormUrlEncodedContent(values);
return Post(url, content).Result;
}
public string ExecPost(string payload)
{
var values = new Dictionary<string, string>
{
["payload"] = payload
};
FormUrlEncodedContent content = new FormUrlEncodedContent(values);
return Post(PostUrl, content).Result;
}
}
public class SocketServer
{
string _ip;
public string Ip
{
get => _ip;
set
{
_ip = value;
_ipAdd = IPAddress.Parse(_ip);
Connect();
}
}
int _port;
public int Port
{
get => _port;
set
{
_port = value;
Connect();
}
}
Socket _soc = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPAddress _ipAdd;
IPEndPoint _remoteEp;
IVideoProvider _currentVideoProvider;
public bool Connected { get; set; }
public bool Initialized { get; set; }
public int Retries { get; set; } = 10;
private bool _success; // indicates whether the last command was executed successfully
public void Initialize()
{
if (_currentVideoProvider == null)
{
_currentVideoProvider = GlobalWin.Emulator.AsVideoProviderOrDefault();
}
Initialized = true;
}
public void Connect()
{
_remoteEp = new IPEndPoint(_ipAdd, _port);
_soc = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
_soc.Connect(_remoteEp);
Connected = true;
_soc.ReceiveTimeout = 5;
}
public void SetIp(string ip, int port)
{
_ip = ip;
_port = port;
_ipAdd = IPAddress.Parse(_ip);
Connect();
}
public string GetInfo()
{
return $"{_ip}:{_port}";
}
public void SetTimeout(int timeout)
{
_soc.ReceiveTimeout = timeout;
}
public void SocketConnected()
{
bool part1 = _soc.Poll(1000, SelectMode.SelectRead);
bool part2 = (_soc.Available == 0);
Connected = !(part1 && part2);
}
public int SendString(string sendString)
{
int sentBytes = SendBytes(Encoding.ASCII.GetBytes(sendString));
_success = sentBytes > 0;
return sentBytes;
}
public int SendBytes(byte[] sendBytes)
{
int sentBytes;
try
{
sentBytes = _soc.Send(sendBytes);
}
catch
{
sentBytes = -1;
}
return sentBytes;
}
public string SendScreenshot()
{
return SendScreenshot(0);
}
public string SendScreenshot(int waitingTime)
{
if (!Initialized)
{
Initialize();
}
var screenShot = new ScreenShot();
using (BitmapBuffer bb = screenShot.MakeScreenShotImage())
{
using var img = bb.ToSysdrawingBitmap();
byte[] bmpBytes = screenShot.ImageToByte(img);
int sentBytes = 0;
int tries = 0;
while (sentBytes <= 0 && tries < Retries)
{
try
{
tries++;
sentBytes = SendBytes(bmpBytes);
}
catch (SocketException)
{
Connect();
sentBytes = 0;
}
if (sentBytes == -1)
{
Connect();
}
}
_success = tries < Retries;
}
var resp = !_success
? "Screenshot could not be sent"
: "Screenshot was sent";
if (waitingTime == 0)
{
return resp;
}
resp = ReceiveMessage();
if (resp == "")
{
resp = "Failed to get a response";
}
return resp;
}
public string ReceiveMessage()
{
if (!Connected)
{
Connect();
}
string resp = "";
byte[] receivedBytes = new byte[256];
int receivedLength = 1;
while (receivedLength > 0)
{
try
{
receivedLength = _soc.Receive(receivedBytes, receivedBytes.Length, 0);
resp += Encoding.ASCII.GetString(receivedBytes);
}
catch
{
receivedLength = 0;
}
}
return resp;
}
public bool Successful()
{
return _success;
}
}
public class MemoryMappedFiles
{
private readonly Dictionary<string, MemoryMappedFile> _mmfFiles = new Dictionary<string, MemoryMappedFile>();
public string Filename { get; set; } = "BizhawkTemp_main";
public int ScreenShotToFile()
{
ScreenShot screenShot = new ScreenShot();
var bb = screenShot.MakeScreenShotImage();
var img = bb.ToSysdrawingBitmap();
byte[] bmpBytes = screenShot.ImageToByte(img);
return WriteToFile(@Filename, bmpBytes);
}
public int WriteToFile(string filename, byte[] outputBytes)
{
int bytesWritten = -1;
if (_mmfFiles.TryGetValue(filename, out var mmfFile) == false)
{
mmfFile = MemoryMappedFile.CreateOrOpen(filename, outputBytes.Length);
_mmfFiles[filename] = mmfFile;
}
try
{
using MemoryMappedViewAccessor accessor = mmfFile.CreateViewAccessor(0, outputBytes.Length, MemoryMappedFileAccess.Write);
accessor.WriteArray<byte>(0, outputBytes, 0, outputBytes.Length);
bytesWritten = outputBytes.Length;
}
catch (UnauthorizedAccessException)
{
try
{
mmfFile.Dispose();
}
catch (Exception)
{
}
mmfFile = MemoryMappedFile.CreateOrOpen(filename, outputBytes.Length);
_mmfFiles[filename] = mmfFile;
using MemoryMappedViewAccessor accessor = mmfFile.CreateViewAccessor(0, outputBytes.Length, MemoryMappedFileAccess.Write);
accessor.WriteArray(0, outputBytes, 0, outputBytes.Length);
bytesWritten = outputBytes.Length;
}
return bytesWritten;
}
public string ReadFromFile(string filename, int expectedSize)
{
MemoryMappedFile mmfFile = MemoryMappedFile.OpenExisting(filename);
using MemoryMappedViewAccessor viewAccessor = mmfFile.CreateViewAccessor();
byte[] bytes = new byte[expectedSize];
viewAccessor.ReadArray(0, bytes, 0, bytes.Length);
string text = Encoding.UTF8.GetString(bytes);
return text;
}
}
// makes all functionality for providing screenshots available
class ScreenShot
{
private IVideoProvider _currentVideoProvider;
private readonly ImageConverter _converter = new ImageConverter();
public BitmapBuffer MakeScreenShotImage()
{
if (_currentVideoProvider == null)
{
_currentVideoProvider = GlobalWin.Emulator.AsVideoProviderOrDefault();
}
return GlobalWin.DisplayManager.RenderVideoProvider(_currentVideoProvider);
}
public byte[] ImageToByte(Image img)
{
return (byte[])_converter.ConvertTo(img, typeof(byte[]));
}
public string ImageToString(Image img)
{
return Convert.ToBase64String(ImageToByte(img));
}
public string GetScreenShotAsString()
{
BitmapBuffer bb = MakeScreenShotImage();
byte[] imgBytes = ImageToByte(bb.ToSysdrawingBitmap());
return Convert.ToBase64String(imgBytes);
}
}
}
}

6
src/BizHawk.Client.EmuHawk/GlobalWin.cs
View File

@ -28,9 +28,9 @@ namespace BizHawk.Client.EmuHawk
public static GLManager GLManager; public static GLManager GLManager;
public static int ExitCode; public static int ExitCode;
public static Communication.HttpCommunication httpCommunication = null; public static HttpCommunication httpCommunication = null;
public static Communication.SocketServer socketServer = null; public static SocketServer socketServer = null;
public static Communication.MemoryMappedFiles memoryMappedFiles = null; public static MemoryMappedFiles memoryMappedFiles = null;
/// <summary> /// <summary>
/// Used to disable secondary throttling (e.g. vsync, audio) for unthrottled modes or when the primary (clock) throttle is taking over (e.g. during fast forward/rewind). /// Used to disable secondary throttling (e.g. vsync, audio) for unthrottled modes or when the primary (clock) throttle is taking over (e.g. during fast forward/rewind).

5
src/BizHawk.Client.EmuHawk/MainForm.cs
View File

@ -318,7 +318,10 @@ namespace BizHawk.Client.EmuHawk
try try
{ {
_argParser.ParseArguments(args); _argParser.ParseArguments(
args,
() => (byte[]) new ImageConverter().ConvertTo(MakeScreenshotImage().ToSysdrawingBitmap(), typeof(byte[]))
);
} }
catch (ArgParserException e) catch (ArgParserException e)
{ {

6
src/BizHawk.Client.EmuHawk/tools/Lua/Libraries/CommLuaLibrary.cs
View File

@ -66,7 +66,7 @@ namespace BizHawk.Client.EmuHawk
[LuaMethod("socketServerSuccessful", "returns the status of the last Socket server action")] [LuaMethod("socketServerSuccessful", "returns the status of the last Socket server action")]
public bool SocketServerSuccessful() public bool SocketServerSuccessful()
{ {
return CheckSocketServer() && GlobalWin.socketServer.Successful(); return CheckSocketServer() && GlobalWin.socketServer.Successful;
} }
[LuaMethod("socketServerSetTimeout", "sets the timeout in milliseconds for receiving messages")] [LuaMethod("socketServerSetTimeout", "sets the timeout in milliseconds for receiving messages")]
@ -80,7 +80,7 @@ namespace BizHawk.Client.EmuHawk
public void SocketServerSetIp(string ip) public void SocketServerSetIp(string ip)
{ {
CheckSocketServer(); CheckSocketServer();
GlobalWin.socketServer.Ip = ip; GlobalWin.socketServer.IP = ip;
} }
[LuaMethod("socketServerSetPort", "sets the port of the Lua socket server")] [LuaMethod("socketServerSetPort", "sets the port of the Lua socket server")]
@ -93,7 +93,7 @@ namespace BizHawk.Client.EmuHawk
[LuaMethod("socketServerGetIp", "returns the IP address of the Lua socket server")] [LuaMethod("socketServerGetIp", "returns the IP address of the Lua socket server")]
public string SocketServerGetIp() public string SocketServerGetIp()
{ {
return GlobalWin.socketServer?.Ip; return GlobalWin.socketServer?.IP;
} }
[LuaMethod("socketServerGetPort", "returns the port of the Lua socket server")] [LuaMethod("socketServerGetPort", "returns the port of the Lua socket server")]