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3065 lines (2719 loc) · 145 KB
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/* ****************************************************************************
*
* Copyright (c) Microsoft Corporation.
*
* This source code is subject to terms and conditions of the Apache License, Version 2.0. A
* copy of the license can be found in the License.html file at the root of this distribution. If
* you cannot locate the Apache License, Version 2.0, please send an email to
* [email protected]. By using this source code in any fashion, you are agreeing to be bound
* by the terms of the Apache License, Version 2.0.
*
* You must not remove this notice, or any other, from this software.
*
*
* ***************************************************************************/
#if FEATURE_FULL_NET
using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Net.Security;
using System.Runtime.InteropServices;
using System.Security.Cryptography.X509Certificates;
using System.Security.Authentication;
using System.Text;
using Microsoft.Scripting;
using Microsoft.Scripting.Runtime;
using IronPython.Runtime;
using IronPython.Runtime.Exceptions;
using IronPython.Runtime.Operations;
using IronPython.Runtime.Types;
#if FEATURE_NUMERICS
using System.Numerics;
#else
using Microsoft.Scripting.Math;
#endif
using PythonArray = IronPython.Modules.ArrayModule.array;
using SpecialNameAttribute = System.Runtime.CompilerServices.SpecialNameAttribute;
using Microsoft.Scripting.Utils;
[assembly: PythonModule("_socket", typeof(IronPython.Modules.PythonSocket))]
namespace IronPython.Modules {
public static class PythonSocket {
private static readonly object _defaultTimeoutKey = new object();
private static readonly object _defaultBufsizeKey = new object();
private const int DefaultBufferSize = 8192;
public static PythonTuple _delegate_methods = PythonTuple.MakeTuple("recv", "recvfrom", "recv_into", "recvfrom_into", "send", "sendto");
[SpecialName]
public static void PerformModuleReload(PythonContext/*!*/ context, PythonDictionary/*!*/ dict) {
if (!context.HasModuleState(_defaultTimeoutKey)) {
context.SetModuleState(_defaultTimeoutKey, null);
}
context.SetModuleState(_defaultBufsizeKey, DefaultBufferSize);
PythonType socketErr = GetSocketError(context, dict);
context.EnsureModuleException("socketherror", socketErr, dict, "herror", "socket");
context.EnsureModuleException("socketgaierror", socketErr, dict, "gaierror", "socket");
context.EnsureModuleException("sockettimeout", socketErr, dict, "timeout", "socket");
}
internal static PythonType GetSocketError(PythonContext context, PythonDictionary dict) {
return context.EnsureModuleException("socketerror", PythonExceptions.OSError, dict, "error", "socket");
}
#if NETSTANDARD
private static ConditionalWeakTable<Socket, object> fakeHandles = new ConditionalWeakTable<Socket, object>();
private static long maxHandle = 0;
#endif
private static IntPtr GetHandle(this Socket socket) {
#if NETSTANDARD
object handle;
lock (fakeHandles) {
if (!fakeHandles.TryGetValue(socket, out handle)) {
handle = (IntPtr)maxHandle++;
fakeHandles.Add(socket, handle);
}
}
return (IntPtr)handle;
#else
return socket.Handle;
#endif
}
public const string __doc__ = "Implementation module for socket operations.\n\n"
+ "This module is a loose wrapper around the .NET System.Net.Sockets API, so you\n"
+ "may find the corresponding MSDN documentation helpful in decoding error\n"
+ "messages and understanding corner cases.\n"
+ "\n"
+ "This implementation of socket differs slightly from the standard CPython\n"
+ "socket module. Many of these differences are due to the implementation of the\n"
+ ".NET socket libraries. These differences are summarized below. For full\n"
+ "details, check the docstrings of the functions mentioned.\n"
+ " - s.accept(), s.connect(), and s.connect_ex() do not support timeouts.\n"
+ " - Timeouts in s.sendall() don't work correctly.\n"
+ " - s.dup() is not implemented.\n"
+ " - SSL support is not implemented."
+ "\n"
+ "An Extra IronPython-specific function is exposed only if the clr module is\n"
+ "imported:\n"
+ " - s.HandleToSocket() returns the System.Net.Sockets.Socket object associated\n"
+ " with a particular \"file descriptor number\" (as returned by s.fileno()).\n"
;
#region Socket object
public static PythonType SocketType = DynamicHelpers.GetPythonTypeFromType(typeof(socket));
[PythonType]
[Documentation("socket([family[, type[, proto]]]) -> socket object\n\n"
+ "Create a socket (a network connection endpoint) of the given family, type,\n"
+ "and protocol. socket() accepts keyword arguments.\n"
+ " - family (address family) defaults to AF_INET\n"
+ " - type (socket type) defaults to SOCK_STREAM\n"
+ " - proto (protocol type) defaults to 0, which specifies the default protocol\n"
+ "\n"
+ "This module supports only IP sockets. It does not support raw or Unix sockets.\n"
+ "Both IPv4 and IPv6 are supported.")]
public class socket : IWeakReferenceable {
#region Fields
/// <summary>
/// handleToSocket allows us to translate from Python's idea of a socket resource (file
/// descriptor numbers) to .NET's idea of a socket resource (System.Net.Socket objects).
/// In particular, this allows the select module to convert file numbers (as returned by
/// fileno()) and convert them to Socket objects so that it can do something useful with them.
/// </summary>
private static readonly Dictionary<IntPtr, WeakReference> _handleToSocket = new Dictionary<IntPtr, WeakReference>();
private const int DefaultAddressFamily = (int)AddressFamily.InterNetwork;
private const int DefaultSocketType = (int)System.Net.Sockets.SocketType.Stream;
private const int DefaultProtocolType = (int)ProtocolType.Unspecified;
internal Socket _socket;
internal string _hostName;
private WeakRefTracker _weakRefTracker = null;
private int _referenceCount = 1;
public const string __module__ = "socket";
internal CodeContext/*!*/ _context;
private int _timeout;
#endregion
#region Public API
public socket() {
}
public void __init__(CodeContext/*!*/ context, int addressFamily=DefaultAddressFamily,
int socketType=DefaultSocketType,
int protocolType=DefaultProtocolType,
socket _sock=null) {
System.Net.Sockets.SocketType type = (System.Net.Sockets.SocketType)Enum.ToObject(typeof(System.Net.Sockets.SocketType), socketType);
if (!Enum.IsDefined(typeof(System.Net.Sockets.SocketType), type)) {
throw MakeException(context, new SocketException((int)SocketError.SocketNotSupported));
}
AddressFamily family = (AddressFamily)Enum.ToObject(typeof(AddressFamily), addressFamily);
if (!Enum.IsDefined(typeof(AddressFamily), family)) {
throw MakeException(context, new SocketException((int)SocketError.AddressFamilyNotSupported));
}
ProtocolType proto = (ProtocolType)Enum.ToObject(typeof(ProtocolType), protocolType);
if (!Enum.IsDefined(typeof(ProtocolType), proto)) {
throw MakeException(context, new SocketException((int)SocketError.ProtocolNotSupported));
}
if (_sock == null) {
Socket newSocket;
try {
newSocket = new Socket(family, type, proto);
} catch (SocketException e) {
throw MakeException(context, e);
}
Initialize(context, newSocket);
} else {
_socket = _sock._socket;
_hostName = _sock._hostName;
// we now own the lifetime of the socket
GC.SuppressFinalize(_sock);
Initialize(context, _socket);
}
}
public void __del__() {
_close();
}
~socket() {
_close();
}
public socket _sock {
get {
return this;
}
}
#if !NETSTANDARD
private IAsyncResult _acceptResult;
#endif
[Documentation("accept() -> (conn, address)\n\n"
+ "Accept a connection. The socket must be bound and listening before calling\n"
+ "accept(). conn is a new socket object connected to the remote host, and\n"
+ "address is the remote host's address (e.g. a (host, port) tuple for IPv4).\n"
+ "\n"
)]
public PythonTuple accept() {
socket wrappedRemoteSocket;
Socket realRemoteSocket;
try {
#if NETSTANDARD
// TODO: support timeout != 0
realRemoteSocket = _socket.Accept();
#else
if (_acceptResult != null && _acceptResult.IsCompleted) {
// previous async result has completed
realRemoteSocket = _socket.EndAccept(_acceptResult);
} else {
int timeoutTime = _timeout;
if (timeoutTime != 0) {
// use the existing or create a new async request
var asyncResult = _acceptResult ?? _socket.BeginAccept((x) => { }, null);
if (asyncResult.AsyncWaitHandle.WaitOne(timeoutTime)) {
// it's completed, end and throw it away
realRemoteSocket = _socket.EndAccept(asyncResult);
_acceptResult = null;
} else {
// save the async result for later incase it completes
_acceptResult = asyncResult;
throw PythonExceptions.CreateThrowable(timeout(_context), 0, "timeout");
}
} else {
realRemoteSocket = _socket.Accept();
}
}
#endif
} catch (Exception e) {
throw MakeException(_context, e);
}
wrappedRemoteSocket = new socket(_context, realRemoteSocket);
return PythonTuple.MakeTuple(wrappedRemoteSocket, wrappedRemoteSocket.getpeername());
}
[Documentation("bind(address) -> None\n\n"
+ "Bind to an address. If the socket is already bound, socket.error is raised.\n"
+ "For IP sockets, address is a (host, port) tuple. Raw sockets are not\n"
+ "supported.\n"
+ "\n"
+ "If you do not care which local address is assigned, set host to INADDR_ANY and\n"
+ "the system will assign the most appropriate network address. Similarly, if you\n"
+ "set port to 0, the system will assign an available port number between 1024\n"
+ "and 5000."
)]
public void bind(PythonTuple address) {
IPEndPoint localEP = TupleToEndPoint(_context, address, _socket.AddressFamily, out _hostName);
try {
_socket.Bind(localEP);
} catch (Exception e) {
throw MakeException(_context, e);
}
}
[Documentation("close() -> None\n\nClose the socket. It cannot be used after being closed.")]
public void close() {
var refs = System.Threading.Interlocked.Decrement(ref _referenceCount);
// Don't actually close the socket if other file objects are
// still referring to this socket.
if (refs < 1) {
_close();
}
}
internal void _close() {
if (_socket != null) {
lock (_handleToSocket) {
WeakReference weakref;
if (_handleToSocket.TryGetValue(_socket.GetHandle(), out weakref)) {
Socket target = (weakref.Target as Socket);
if (target == _socket || target == null) {
_handleToSocket.Remove(_socket.GetHandle());
}
}
}
((IDisposable)_socket).Dispose();
_referenceCount = 0;
}
}
[Documentation("connect(address) -> None\n\n"
+ "Connect to a remote socket at the given address. IP addresses are expressed\n"
+ "as (host, port).\n"
+ "\n"
+ "Raises socket.error if the socket has been closed, the socket is listening, or\n"
+ "another connection error occurred."
+ "\n"
+ "Difference from CPython: connect() does not support timeouts in blocking mode.\n"
+ "If a timeout is set and the socket is in blocking mode, connect() will block\n"
+ "indefinitely until a connection is made or an error occurs."
)]
public void connect(PythonTuple address) {
IPEndPoint remoteEP = TupleToEndPoint(_context, address, _socket.AddressFamily, out _hostName);
try {
_socket.Connect(remoteEP);
} catch (Exception e) {
throw MakeException(_context, e);
}
}
[Documentation("connect_ex(address) -> error_code\n\n"
+ "Like connect(), but return an error code insted of raising an exception for\n"
+ "socket exceptions raised by the underlying system Connect() call. Note that\n"
+ "exceptions other than SocketException generated by the system Connect() call\n"
+ "will still be raised.\n"
+ "\n"
+ "A return value of 0 indicates that the connect call was successful."
+ "\n"
+ "Difference from CPython: connect_ex() does not support timeouts in blocking\n"
+ "mode. If a timeout is set and the socket is in blocking mode, connect_ex() will\n"
+ "block indefinitely until a connection is made or an error occurs."
)]
public int connect_ex(PythonTuple address) {
IPEndPoint remoteEP = TupleToEndPoint(_context, address, _socket.AddressFamily, out _hostName);
try {
_socket.Connect(remoteEP);
} catch (SocketException e) {
return (int)e.SocketErrorCode;
}
return (int)SocketError.Success;
}
[Documentation("fileno() -> file_handle\n\n"
+ "Return the underlying system handle for this socket (a 64-bit integer)."
)]
public Int64 fileno() {
try {
return _socket.GetHandle().ToInt64();
} catch (Exception e) {
throw MakeException(_context, e);
}
}
[Documentation("getpeername() -> address\n\n"
+ "Return the address of the remote end of this socket. The address format is\n"
+ "family-dependent (e.g. a (host, port) tuple for IPv4)."
)]
public PythonTuple getpeername() {
try {
IPEndPoint remoteEP = _socket.RemoteEndPoint as IPEndPoint;
if (remoteEP == null) {
throw MakeException(_context, new SocketException((int)SocketError.AddressFamilyNotSupported));
}
return EndPointToTuple(remoteEP);
} catch (Exception e) {
throw MakeException(_context, e);
}
}
[Documentation("getsockname() -> address\n\n"
+ "Return the address of the local end of this socket. The address format is\n"
+ "family-dependent (e.g. a (host, port) tuple for IPv4)."
)]
public PythonTuple getsockname() {
try {
IPEndPoint localEP = _socket.LocalEndPoint as IPEndPoint;
if (localEP == null) {
throw MakeException(_context, new SocketException((int)SocketError.InvalidArgument));
}
return EndPointToTuple(localEP);
} catch (Exception e) {
throw MakeException(_context, e);
}
}
[Documentation("getsockopt(level, optname[, buflen]) -> value\n\n"
+ "Return the value of a socket option. level is one of the SOL_* constants\n"
+ "defined in this module, and optname is one of the SO_* constants. If buflen is\n"
+ "omitted or zero, an integer value is returned. If it is present, a byte string\n"
+ "whose maximum length is buflen bytes) is returned. The caller must the decode\n"
+ "the resulting byte string."
)]
public object getsockopt(int optionLevel, int optionName, int optionLength=0) {
SocketOptionLevel level = (SocketOptionLevel)Enum.ToObject(typeof(SocketOptionLevel), optionLevel);
if (!Enum.IsDefined(typeof(SocketOptionLevel), level)) {
throw MakeException(_context, new SocketException((int)SocketError.InvalidArgument));
}
SocketOptionName name = (SocketOptionName)Enum.ToObject(typeof(SocketOptionName), optionName);
if (!Enum.IsDefined(typeof(SocketOptionName), name)) {
throw MakeException(_context, new SocketException((int)SocketError.ProtocolOption));
}
try {
if (optionLength == 0) {
// Integer return value
return (int)_socket.GetSocketOption(level, name);
} else {
// Byte string return value
return _socket.GetSocketOption(level, name, optionLength).MakeString();
}
} catch (Exception e) {
throw MakeException(_context, e);
}
}
[Documentation("listen(backlog) -> None\n\n"
+ "Listen for connections on the socket. Backlog is the maximum length of the\n"
+ "pending connections queue. The maximum value is system-dependent."
)]
public void listen(int backlog) {
try {
_socket.Listen(backlog);
} catch (Exception e) {
throw MakeException(_context, e);
}
}
[Documentation("makefile([mode[, bufsize]]) -> file object\n\n"
+ "Return a regular file object corresponding to the socket. The mode\n"
+ "and bufsize arguments are as for the built-in open() function.")]
public PythonFile makefile(string mode="r", int bufSize=8192) {
System.Threading.Interlocked.Increment(ref _referenceCount); // dup our handle
return new _fileobject(_context, this, mode, bufSize, false);
}
[Documentation("recv(bufsize[, flags]) -> string\n\n"
+ "Receive data from the socket, up to bufsize bytes. For connection-oriented\n"
+ "protocols (e.g. SOCK_STREAM), you must first call either connect() or\n"
+ "accept(). Connectionless protocols (e.g. SOCK_DGRAM) may also use recvfrom().\n"
+ "\n"
+ "recv() blocks until data is available, unless a timeout was set using\n"
+ "settimeout(). If the timeout was exceeded, socket.timeout is raised."
+ "recv() returns immediately with zero bytes when the connection is closed."
)]
public string recv(int maxBytes, int flags=0) {
int bytesRead;
if (maxBytes < 0)
throw PythonOps.ValueError("negative buffersize in recv");
byte[] buffer = new byte[maxBytes];
try {
bytesRead = _socket.Receive(buffer, (SocketFlags)flags);
} catch (Exception e) {
throw MakeRecvException(e, SocketError.NotConnected);
}
return PythonOps.MakeString(buffer, bytesRead);
}
[Documentation("recv_into(buffer, [nbytes[, flags]]) -> nbytes_read\n\n"
+ "A version of recv() that stores its data into a buffer rather than creating\n"
+ "a new string. Receive up to buffersize bytes from the socket. If buffersize\n"
+ "is not specified (or 0), receive up to the size available in the given buffer.\n\n"
+ "See recv() for documentation about the flags.\n"
)]
public int recv_into(PythonBuffer buffer, int nbytes=0, int flags=0) {
if (nbytes < 0) {
throw PythonOps.ValueError("negative buffersize in recv_into");
}
throw PythonOps.TypeError("buffer is read-only");
}
[Documentation("recv_into(buffer, [nbytes[, flags]]) -> nbytes_read\n\n"
+ "A version of recv() that stores its data into a buffer rather than creating\n"
+ "a new string. Receive up to buffersize bytes from the socket. If buffersize\n"
+ "is not specified (or 0), receive up to the size available in the given buffer.\n\n"
+ "See recv() for documentation about the flags.\n"
)]
public int recv_into(string buffer, int nbytes=0, int flags=0) {
throw PythonOps.TypeError("Cannot use string as modifiable buffer");
}
[Documentation("recv_into(buffer, [nbytes[, flags]]) -> nbytes_read\n\n"
+ "A version of recv() that stores its data into a buffer rather than creating\n"
+ "a new string. Receive up to buffersize bytes from the socket. If buffersize\n"
+ "is not specified (or 0), receive up to the size available in the given buffer.\n\n"
+ "See recv() for documentation about the flags.\n"
)]
public int recv_into(PythonArray buffer, int nbytes=0, int flags=0) {
int bytesRead;
byte[] byteBuffer = new byte[byteBufferSize("recv_into", nbytes, buffer.__len__(), buffer.itemsize)];
try {
bytesRead = _socket.Receive(byteBuffer, (SocketFlags)flags);
} catch (Exception e) {
throw MakeRecvException(e, SocketError.NotConnected);
}
buffer.FromStream(new MemoryStream(byteBuffer), 0);
return bytesRead;
}
[Documentation("recv_into(bytearray, [nbytes[, flags]]) -> nbytes_read\n\n"
+ "A version of recv() that stores its data into a bytearray rather than creating\n"
+ "a new string. Receive up to buffersize bytes from the socket. If buffersize\n"
+ "is not specified (or 0), receive up to the size available in the given buffer.\n\n"
+ "See recv() for documentation about the flags.\n"
)]
public int recv_into(ByteArray buffer, int nbytes=0, int flags=0) {
int bytesRead;
byte[] byteBuffer = new byte[byteBufferSize("recv_into", nbytes, buffer.Count, 1)];
try {
bytesRead = _socket.Receive(byteBuffer, (SocketFlags)flags);
} catch (Exception e) {
throw MakeRecvException(e, SocketError.NotConnected);
}
for (int i = 0; i < bytesRead; i++) {
buffer[i] = byteBuffer[i];
}
return bytesRead;
}
[Documentation("recv_into(memoryview, [nbytes[, flags]]) -> nbytes_read\n\n"
+ "A version of recv() that stores its data into a bytearray rather than creating\n"
+ "a new string. Receive up to buffersize bytes from the socket. If buffersize\n"
+ "is not specified (or 0), receive up to the size available in the given buffer.\n\n"
+ "See recv() for documentation about the flags.\n"
)]
public int recv_into(MemoryView buffer, int nbytes=0, int flags=0) {
int bytesRead;
byte[] byteBuffer = buffer.tobytes().ToByteArray();
try {
bytesRead = _socket.Receive(byteBuffer, (SocketFlags)flags);
}
catch (Exception e) {
if (_socket.SendTimeout == 0) {
var s = new SocketException((int)SocketError.NotConnected);
throw PythonExceptions.CreateThrowable(error(_context), (int)SocketError.NotConnected, s.Message);
}
else
throw MakeException(_context, e);
}
buffer[new Slice(0, bytesRead)] = byteBuffer.Slice(new Slice(0, bytesRead));
return bytesRead;
}
public int recv_into(object buffer, int nbytes=0, int flags=0){
throw PythonOps.TypeError(string.Format("recv_into() argument 1 must be read-write buffer, not {0}",PythonOps.GetPythonTypeName(buffer)));
}
[Documentation("recvfrom(bufsize[, flags]) -> (string, address)\n\n"
+ "Receive data from the socket, up to bufsize bytes. string is the data\n"
+ "received, and address (whose format is protocol-dependent) is the address of\n"
+ "the socket from which the data was received."
)]
public PythonTuple recvfrom(int maxBytes, int flags=0) {
if (maxBytes < 0) {
throw PythonOps.ValueError("negative buffersize in recvfrom");
}
int bytesRead;
byte[] buffer = new byte[maxBytes];
IPEndPoint remoteIPEP = new IPEndPoint(IPAddress.Any, 0);
EndPoint remoteEP = remoteIPEP;
try {
bytesRead = _socket.ReceiveFrom(buffer, (SocketFlags)flags, ref remoteEP);
} catch (Exception e) {
throw MakeRecvException(e, SocketError.InvalidArgument);
}
string data = PythonOps.MakeString(buffer, bytesRead);
PythonTuple remoteAddress = EndPointToTuple((IPEndPoint)remoteEP);
return PythonTuple.MakeTuple(data, remoteAddress);
}
[Documentation("recvfrom_into(buffer[, nbytes[, flags]]) -> (nbytes, address info)\n\n"
+ "Like recv_into(buffer[, nbytes[, flags]]) but also return the sender's address info.\n"
)]
public PythonTuple recvfrom_into(PythonBuffer buffer, int nbytes=0, int flags=0) {
if (nbytes < 0) {
throw PythonOps.ValueError("negative buffersize in recvfrom_into");
}
throw PythonOps.TypeError("buffer is read-only");
}
[Documentation("recvfrom_into(buffer[, nbytes[, flags]]) -> (nbytes, address info)\n\n"
+ "Like recv_into(buffer[, nbytes[, flags]]) but also return the sender's address info.\n"
)]
public PythonTuple recvfrom_into(string buffer, int nbytes=0, int flags=0) {
throw PythonOps.TypeError("Cannot use string as modifiable buffer");
}
[Documentation("recvfrom_into(buffer[, nbytes[, flags]]) -> (nbytes, address info)\n\n"
+ "Like recv_into(buffer[, nbytes[, flags]]) but also return the sender's address info.\n"
)]
public PythonTuple recvfrom_into(PythonArray buffer, int nbytes=0, int flags=0) {
int bytesRead;
byte[] byteBuffer = new byte[byteBufferSize("recvfrom_into", nbytes, buffer.__len__(), buffer.itemsize)];
IPEndPoint remoteIPEP = new IPEndPoint(IPAddress.Any, 0);
EndPoint remoteEP = remoteIPEP;
try {
bytesRead = _socket.ReceiveFrom(byteBuffer, (SocketFlags)flags, ref remoteEP);
} catch (Exception e) {
throw MakeRecvException(e, SocketError.InvalidArgument);
}
buffer.FromStream(new MemoryStream(byteBuffer), 0);
PythonTuple remoteAddress = EndPointToTuple((IPEndPoint)remoteEP);
return PythonTuple.MakeTuple(bytesRead, remoteAddress);
}
[Documentation("recvfrom_into(buffer[, nbytes[, flags]]) -> (nbytes, address info)\n\n"
+ "Like recv_into(buffer[, nbytes[, flags]]) but also return the sender's address info.\n"
)]
public PythonTuple recvfrom_into(MemoryView buffer, int nbytes=0, int flags=0){
int bytesRead;
byte[] byteBuffer = buffer.tobytes().ToByteArray();
IPEndPoint remoteIPEP = new IPEndPoint(IPAddress.Any, 0);
EndPoint remoteEP = remoteIPEP;
try {
bytesRead = _socket.ReceiveFrom(byteBuffer, (SocketFlags)flags, ref remoteEP);
}
catch (Exception e) {
throw MakeRecvException(e, SocketError.InvalidArgument);
}
buffer[new Slice(0, bytesRead)] = byteBuffer.Slice(new Slice(0, bytesRead));
PythonTuple remoteAddress = EndPointToTuple((IPEndPoint)remoteEP);
return PythonTuple.MakeTuple(bytesRead, remoteAddress);
}
[Documentation("recvfrom_into(buffer[, nbytes[, flags]]) -> (nbytes, address info)\n\n"
+ "Like recv_into(buffer[, nbytes[, flags]]) but also return the sender's address info.\n"
)]
public PythonTuple recvfrom_into(IList<byte> buffer, int nbytes=0, int flags=0) {
int bytesRead;
byte[] byteBuffer = new byte[byteBufferSize("recvfrom_into", nbytes, buffer.Count, 1)];
IPEndPoint remoteIPEP = new IPEndPoint(IPAddress.Any, 0);
EndPoint remoteEP = remoteIPEP;
try {
bytesRead = _socket.ReceiveFrom(byteBuffer, (SocketFlags)flags, ref remoteEP);
} catch (Exception e) {
throw MakeRecvException(e, SocketError.InvalidArgument);
}
for (int i = 0; i < byteBuffer.Length; i++) {
buffer[i] = byteBuffer[i];
}
PythonTuple remoteAddress = EndPointToTuple((IPEndPoint)remoteEP);
return PythonTuple.MakeTuple(bytesRead, remoteAddress);
}
public PythonTuple recvfrom_into(object buffer, int nbytes=0, int flags=0) {
throw PythonOps.TypeError(string.Format("recvfrom_into() argument 1 must be read-write buffer, not {0}", PythonOps.GetPythonTypeName(buffer)));
}
private static int byteBufferSize(string funcName, int nbytes, int bufLength, int itemSize) {
if (nbytes < 0) {
throw PythonOps.ValueError("negative buffersize in " + funcName);
} else if (nbytes == 0) {
return bufLength * itemSize;
} else {
int remainder = nbytes % itemSize;
return Math.Min(remainder == 0 ? nbytes : nbytes + itemSize - remainder,
bufLength * itemSize);
}
}
private Exception MakeRecvException(Exception e, SocketError errorCode=SocketError.InvalidArgument) {
// on the socket recv throw a special socket error code when SendTimeout is zero
if (_socket.SendTimeout == 0) {
var s = new SocketException((int)errorCode);
return PythonExceptions.CreateThrowable(error(_context), (int)SocketError.InvalidArgument, s.Message);
}
else
return MakeException(_context, e);
}
[Documentation("send(string[, flags]) -> bytes_sent\n\n"
+ "Send data to the remote socket. The socket must be connected to a remote\n"
+ "socket (by calling either connect() or accept(). Returns the number of bytes\n"
+ "sent to the remote socket.\n"
+ "\n"
+ "Note that the successful completion of a send() call does not mean that all of\n"
+ "the data was sent. The caller must keep track of the number of bytes sent and\n"
+ "retry the operation until all of the data has been sent.\n"
+ "\n"
+ "Also note that there is no guarantee that the data you send will appear on the\n"
+ "network immediately. To increase network efficiency, the underlying system may\n"
+ "delay transmission until a significant amount of outgoing data is collected. A\n"
+ "successful completion of the Send method means that the underlying system has\n"
+ "had room to buffer your data for a network send"
)]
public int send(string data, int flags=0) {
byte[] buffer = data.MakeByteArray();
try {
return _socket.Send(buffer, (SocketFlags)flags);
} catch (Exception e) {
throw MakeException(_context, e);
}
}
[Documentation("send(string[, flags]) -> bytes_sent\n\n"
+ "Send data to the remote socket. The socket must be connected to a remote\n"
+ "socket (by calling either connect() or accept(). Returns the number of bytes\n"
+ "sent to the remote socket.\n"
+ "\n"
+ "Note that the successful completion of a send() call does not mean that all of\n"
+ "the data was sent. The caller must keep track of the number of bytes sent and\n"
+ "retry the operation until all of the data has been sent.\n"
+ "\n"
+ "Also note that there is no guarantee that the data you send will appear on the\n"
+ "network immediately. To increase network efficiency, the underlying system may\n"
+ "delay transmission until a significant amount of outgoing data is collected. A\n"
+ "successful completion of the Send method means that the underlying system has\n"
+ "had room to buffer your data for a network send"
)]
public int send(Bytes data, int flags=0) {
byte[] buffer = data.GetUnsafeByteArray();
try {
return _socket.Send(buffer, (SocketFlags)flags);
} catch (Exception e) {
throw MakeException(_context, e);
}
}
[Documentation("send(string[, flags]) -> bytes_sent\n\n"
+ "Send data to the remote socket. The socket must be connected to a remote\n"
+ "socket (by calling either connect() or accept(). Returns the number of bytes\n"
+ "sent to the remote socket.\n"
+ "\n"
+ "Note that the successful completion of a send() call does not mean that all of\n"
+ "the data was sent. The caller must keep track of the number of bytes sent and\n"
+ "retry the operation until all of the data has been sent.\n"
+ "\n"
+ "Also note that there is no guarantee that the data you send will appear on the\n"
+ "network immediately. To increase network efficiency, the underlying system may\n"
+ "delay transmission until a significant amount of outgoing data is collected. A\n"
+ "successful completion of the Send method means that the underlying system has\n"
+ "had room to buffer your data for a network send"
)]
public int send(PythonBuffer data, int flags=0) {
byte[] buffer = data.byteCache;
try {
return _socket.Send(buffer, (SocketFlags)flags);
} catch (Exception e) {
throw MakeException(_context, e);
}
}
[Documentation("sendall(string[, flags]) -> None\n\n"
+ "Send data to the remote socket. The socket must be connected to a remote\n"
+ "socket (by calling either connect() or accept().\n"
+ "\n"
+ "Unlike send(), sendall() blocks until all of the data has been sent or until a\n"
+ "timeout or an error occurs. None is returned on success. If an error occurs,\n"
+ "there is no way to tell how much data, if any, was sent.\n"
+ "\n"
+ "Difference from CPython: timeouts do not function as you would expect. The\n"
+ "function is implemented using multiple calls to send(), so the timeout timer\n"
+ "is reset after each of those calls. That means that the upper bound on the\n"
+ "time that it will take for sendall() to return is the number of bytes in\n"
+ "string times the timeout interval.\n"
+ "\n"
+ "Also note that there is no guarantee that the data you send will appear on the\n"
+ "network immediately. To increase network efficiency, the underlying system may\n"
+ "delay transmission until a significant amount of outgoing data is collected. A\n"
+ "successful completion of the Send method means that the underlying system has\n"
+ "had room to buffer your data for a network send"
)]
public void sendall(string data, int flags=0) {
sendallWorker(data.MakeByteArray(), flags);
}
[Documentation("sendall(string[, flags]) -> None\n\n"
+ "Send data to the remote socket. The socket must be connected to a remote\n"
+ "socket (by calling either connect() or accept().\n"
+ "\n"
+ "Unlike send(), sendall() blocks until all of the data has been sent or until a\n"
+ "timeout or an error occurs. None is returned on success. If an error occurs,\n"
+ "there is no way to tell how much data, if any, was sent.\n"
+ "\n"
+ "Difference from CPython: timeouts do not function as you would expect. The\n"
+ "function is implemented using multiple calls to send(), so the timeout timer\n"
+ "is reset after each of those calls. That means that the upper bound on the\n"
+ "time that it will take for sendall() to return is the number of bytes in\n"
+ "string times the timeout interval.\n"
+ "\n"
+ "Also note that there is no guarantee that the data you send will appear on the\n"
+ "network immediately. To increase network efficiency, the underlying system may\n"
+ "delay transmission until a significant amount of outgoing data is collected. A\n"
+ "successful completion of the Send method means that the underlying system has\n"
+ "had room to buffer your data for a network send"
)]
public void sendall(Bytes data, int flags=0) {
sendallWorker(data.GetUnsafeByteArray(), flags);
}
[Documentation("sendall(string[, flags]) -> None\n\n"
+ "Send data to the remote socket. The socket must be connected to a remote\n"
+ "socket (by calling either connect() or accept().\n"
+ "\n"
+ "Unlike send(), sendall() blocks until all of the data has been sent or until a\n"
+ "timeout or an error occurs. None is returned on success. If an error occurs,\n"
+ "there is no way to tell how much data, if any, was sent.\n"
+ "\n"
+ "Difference from CPython: timeouts do not function as you would expect. The\n"
+ "function is implemented using multiple calls to send(), so the timeout timer\n"
+ "is reset after each of those calls. That means that the upper bound on the\n"
+ "time that it will take for sendall() to return is the number of bytes in\n"
+ "string times the timeout interval.\n"
+ "\n"
+ "Also note that there is no guarantee that the data you send will appear on the\n"
+ "network immediately. To increase network efficiency, the underlying system may\n"
+ "delay transmission until a significant amount of outgoing data is collected. A\n"
+ "successful completion of the Send method means that the underlying system has\n"
+ "had room to buffer your data for a network send"
)]
public void sendall(PythonBuffer data, int flags=0) {
sendallWorker(data.byteCache, flags);
}
private void sendallWorker(byte[] buffer, int flags) {
try {
int bytesTotal = buffer.Length;
int bytesRemaining = bytesTotal;
while (bytesRemaining > 0) {
bytesRemaining -= _socket.Send(buffer, bytesTotal - bytesRemaining, bytesRemaining, (SocketFlags)flags);
}
} catch (Exception e) {
throw MakeException(_context, e);
}
}
[Documentation("sendto(string[, flags], address) -> bytes_sent\n\n"
+ "Send data to the remote socket. The socket does not need to be connected to a\n"
+ "remote socket since the address is specified in the call to sendto(). Returns\n"
+ "the number of bytes sent to the remote socket.\n"
+ "\n"
+ "Blocking sockets will block until the all of the bytes in the buffer are sent.\n"
+ "Since a nonblocking Socket completes immediately, it might not send all of the\n"
+ "bytes in the buffer. It is your application's responsibility to keep track of\n"
+ "the number of bytes sent and to retry the operation until the application sends\n"
+ "all of the bytes in the buffer.\n"
+ "\n"
+ "Note that there is no guarantee that the data you send will appear on the\n"
+ "network immediately. To increase network efficiency, the underlying system may\n"
+ "delay transmission until a significant amount of outgoing data is collected. A\n"
+ "successful completion of the Send method means that the underlying system has\n"
+ "had room to buffer your data for a network send"
)]
public int sendto(string data, int flags, PythonTuple address) {
byte[] buffer = data.MakeByteArray();
EndPoint remoteEP = TupleToEndPoint(_context, address, _socket.AddressFamily, out _hostName);
try {
return _socket.SendTo(buffer, (SocketFlags)flags, remoteEP);
} catch (Exception e) {
throw MakeException(_context, e);
}
}
[Documentation("sendto(string[, flags], address) -> bytes_sent\n\n"
+ "Send data to the remote socket. The socket does not need to be connected to a\n"
+ "remote socket since the address is specified in the call to sendto(). Returns\n"
+ "the number of bytes sent to the remote socket.\n"
+ "\n"
+ "Blocking sockets will block until the all of the bytes in the buffer are sent.\n"
+ "Since a nonblocking Socket completes immediately, it might not send all of the\n"
+ "bytes in the buffer. It is your application's responsibility to keep track of\n"
+ "the number of bytes sent and to retry the operation until the application sends\n"
+ "all of the bytes in the buffer.\n"
+ "\n"
+ "Note that there is no guarantee that the data you send will appear on the\n"
+ "network immediately. To increase network efficiency, the underlying system may\n"
+ "delay transmission until a significant amount of outgoing data is collected. A\n"
+ "successful completion of the Send method means that the underlying system has\n"
+ "had room to buffer your data for a network send"
)]
public int sendto(Bytes data, int flags, PythonTuple address) {
byte[] buffer = data.GetUnsafeByteArray();
EndPoint remoteEP = TupleToEndPoint(_context, address, _socket.AddressFamily, out _hostName);
try {
return _socket.SendTo(buffer, (SocketFlags)flags, remoteEP);
} catch (Exception e) {
throw MakeException(_context, e);
}
}
[Documentation("")]
public int sendto(string data, PythonTuple address) {
return sendto(data, 0, address);
}
[Documentation("")]
public int sendto(Bytes data, PythonTuple address) {
return sendto(data, 0, address);
}
[Documentation("setblocking(flag) -> None\n\n"
+ "Set the blocking mode of the socket. If flag is 0, the socket will be set to\n"
+ "non-blocking mode; otherwise, it will be set to blocking mode. If the socket is\n"
+ "in blocking mode, and a method is called (such as send() or recv() which does\n"
+ "not complete immediately, the caller will block execution until the requested\n"
+ "operation completes. In non-blocking mode, a socket.timeout exception would\n"
+ "would be raised in this case.\n"
+ "\n"
+ "Note that changing blocking mode also affects the timeout setting:\n"
+ "setblocking(0) is equivalent to settimeout(0), and setblocking(1) is equivalent\n"
+ "to settimeout(None)."
)]
public void setblocking(int shouldBlock) {
if (shouldBlock == 0) {
settimeout(0);
} else {
settimeout(null);
}
}
[Documentation("settimeout(value) -> None\n\n"
+ "Set a timeout on blocking socket methods. value may be either None or a\n"
+ "non-negative float, with one of the following meanings:\n"
+ " - None: disable timeouts and block indefinitely"
+ " - 0.0: don't block at all (return immediately if the operation can be\n"
+ " completed; raise socket.error otherwise)\n"
+ " - float > 0.0: block for up to the specified number of seconds; raise\n"
+ " socket.timeout if the operation cannot be completed in time\n"
+ "\n"
+ "settimeout(None) is equivalent to setblocking(1), and settimeout(0.0) is\n"
+ "equivalent to setblocking(0)."
+ "\n"
+ "If the timeout is non-zero and is less than 0.5, it will be set to 0.5. This\n"
+ "limitation is specific to IronPython.\n"
)]
// NOTE: The above IronPython specific timeout behavior is due to the underlying
// .Net Socket.SendTimeout behavior and is outside of our control.
public void settimeout(object timeout) {
try {
if (timeout == null) {
_socket.Blocking = true;
_socket.SendTimeout = 0;
} else {
double seconds;
seconds = Converter.ConvertToDouble(timeout);
if (seconds < 0) {
throw PythonOps.ValueError("Timeout value out of range");
}
_socket.Blocking = seconds > 0; // 0 timeout means non-blocking mode
_socket.SendTimeout = (int)(seconds * MillisecondsPerSecond);
_timeout = (int)(seconds * MillisecondsPerSecond);
}
} finally {
_socket.ReceiveTimeout = _socket.SendTimeout;
}
}
[Documentation("gettimeout() -> value\n\n"
+ "Return the timeout duration in seconds for this socket as a float. If no\n"
+ "timeout is set, return None. For more details on timeouts and blocking, see the\n"
+ "Python socket module documentation."
)]
public object gettimeout() {
try {
if (_socket.Blocking && _socket.SendTimeout == 0) {
return null;
} else {
return (double)_socket.SendTimeout / MillisecondsPerSecond;
}
} catch (Exception e) {
throw MakeException(_context, e);
}
}
[Documentation("setsockopt(level, optname[, value]) -> None\n\n"
+ "Set the value of a socket option. level is one of the SOL_* constants defined\n"
+ "in this module, and optname is one of the SO_* constants. value may be either\n"
+ "an integer or a string containing a binary structure. The caller is responsible\n"
+ "for properly encoding the byte string."
)]
public void setsockopt(int optionLevel, int optionName, object value) {
SocketOptionLevel level = (SocketOptionLevel)Enum.ToObject(typeof(SocketOptionLevel), optionLevel);
if (!Enum.IsDefined(typeof(SocketOptionLevel), level)) {
throw MakeException(_context, new SocketException((int)SocketError.InvalidArgument));
}
SocketOptionName name = (SocketOptionName)Enum.ToObject(typeof(SocketOptionName), optionName);
if (!Enum.IsDefined(typeof(SocketOptionName), name)) {
throw MakeException(_context, new SocketException((int)SocketError.ProtocolOption));