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歪脖子 2023-10-20 14:48:14 +08:00
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ios/Framework/CocoaAsyncSocket.framework/CocoaAsyncSocket Normal file
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//
// AsyncSocket.h
//
// This class is in the public domain.
// Originally created by Dustin Voss on Wed Jan 29 2003.
// Updated and maintained by Deusty Designs and the Mac development community.
//
// http://code.google.com/p/cocoaasyncsocket/
//
#import <Foundation/Foundation.h>
@class AsyncSocket;
@class AsyncReadPacket;
@class AsyncWritePacket;
extern NSString *const AsyncSocketException;
extern NSString *const AsyncSocketErrorDomain;
typedef NS_ENUM(NSInteger, AsyncSocketError) {
AsyncSocketCFSocketError = kCFSocketError, // From CFSocketError enum.
AsyncSocketNoError = 0, // Never used.
AsyncSocketCanceledError, // onSocketWillConnect: returned NO.
AsyncSocketConnectTimeoutError,
AsyncSocketReadMaxedOutError, // Reached set maxLength without completing
AsyncSocketReadTimeoutError,
AsyncSocketWriteTimeoutError
};
@protocol AsyncSocketDelegate
@optional
/**
* In the event of an error, the socket is closed.
* You may call "unreadData" during this call-back to get the last bit of data off the socket.
* When connecting, this delegate method may be called
* before"onSocket:didAcceptNewSocket:" or "onSocket:didConnectToHost:".
**/
- (void)onSocket:(AsyncSocket *)sock willDisconnectWithError:(NSError *)err;
/**
* Called when a socket disconnects with or without error. If you want to release a socket after it disconnects,
* do so here. It is not safe to do that during "onSocket:willDisconnectWithError:".
*
* If you call the disconnect method, and the socket wasn't already disconnected,
* this delegate method will be called before the disconnect method returns.
**/
- (void)onSocketDidDisconnect:(AsyncSocket *)sock;
/**
* Called when a socket accepts a connection. Another socket is spawned to handle it. The new socket will have
* the same delegate and will call "onSocket:didConnectToHost:port:".
**/
- (void)onSocket:(AsyncSocket *)sock didAcceptNewSocket:(AsyncSocket *)newSocket;
/**
* Called when a new socket is spawned to handle a connection. This method should return the run-loop of the
* thread on which the new socket and its delegate should operate. If omitted, [NSRunLoop currentRunLoop] is used.
**/
- (NSRunLoop *)onSocket:(AsyncSocket *)sock wantsRunLoopForNewSocket:(AsyncSocket *)newSocket;
/**
* Called when a socket is about to connect. This method should return YES to continue, or NO to abort.
* If aborted, will result in AsyncSocketCanceledError.
*
* If the connectToHost:onPort:error: method was called, the delegate will be able to access and configure the
* CFReadStream and CFWriteStream as desired prior to connection.
*
* If the connectToAddress:error: method was called, the delegate will be able to access and configure the
* CFSocket and CFSocketNativeHandle (BSD socket) as desired prior to connection. You will be able to access and
* configure the CFReadStream and CFWriteStream in the onSocket:didConnectToHost:port: method.
**/
- (BOOL)onSocketWillConnect:(AsyncSocket *)sock;
/**
* Called when a socket connects and is ready for reading and writing.
* The host parameter will be an IP address, not a DNS name.
**/
- (void)onSocket:(AsyncSocket *)sock didConnectToHost:(NSString *)host port:(UInt16)port;
/**
* Called when a socket has completed reading the requested data into memory.
* Not called if there is an error.
**/
- (void)onSocket:(AsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag;
/**
* Called when a socket has read in data, but has not yet completed the read.
* This would occur if using readToData: or readToLength: methods.
* It may be used to for things such as updating progress bars.
**/
- (void)onSocket:(AsyncSocket *)sock didReadPartialDataOfLength:(NSUInteger)partialLength tag:(long)tag;
/**
* Called when a socket has completed writing the requested data. Not called if there is an error.
**/
- (void)onSocket:(AsyncSocket *)sock didWriteDataWithTag:(long)tag;
/**
* Called when a socket has written some data, but has not yet completed the entire write.
* It may be used to for things such as updating progress bars.
**/
- (void)onSocket:(AsyncSocket *)sock didWritePartialDataOfLength:(NSUInteger)partialLength tag:(long)tag;
/**
* Called if a read operation has reached its timeout without completing.
* This method allows you to optionally extend the timeout.
* If you return a positive time interval (> 0) the read's timeout will be extended by the given amount.
* If you don't implement this method, or return a non-positive time interval (<= 0) the read will timeout as usual.
*
* The elapsed parameter is the sum of the original timeout, plus any additions previously added via this method.
* The length parameter is the number of bytes that have been read so far for the read operation.
*
* Note that this method may be called multiple times for a single read if you return positive numbers.
**/
- (NSTimeInterval)onSocket:(AsyncSocket *)sock
shouldTimeoutReadWithTag:(long)tag
elapsed:(NSTimeInterval)elapsed
bytesDone:(NSUInteger)length;
/**
* Called if a write operation has reached its timeout without completing.
* This method allows you to optionally extend the timeout.
* If you return a positive time interval (> 0) the write's timeout will be extended by the given amount.
* If you don't implement this method, or return a non-positive time interval (<= 0) the write will timeout as usual.
*
* The elapsed parameter is the sum of the original timeout, plus any additions previously added via this method.
* The length parameter is the number of bytes that have been written so far for the write operation.
*
* Note that this method may be called multiple times for a single write if you return positive numbers.
**/
- (NSTimeInterval)onSocket:(AsyncSocket *)sock
shouldTimeoutWriteWithTag:(long)tag
elapsed:(NSTimeInterval)elapsed
bytesDone:(NSUInteger)length;
/**
* Called after the socket has successfully completed SSL/TLS negotiation.
* This method is not called unless you use the provided startTLS method.
*
* If a SSL/TLS negotiation fails (invalid certificate, etc) then the socket will immediately close,
* and the onSocket:willDisconnectWithError: delegate method will be called with the specific SSL error code.
**/
- (void)onSocketDidSecure:(AsyncSocket *)sock;
@end
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#pragma mark -
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@interface AsyncSocket : NSObject
{
CFSocketNativeHandle theNativeSocket4;
CFSocketNativeHandle theNativeSocket6;
CFSocketRef theSocket4; // IPv4 accept or connect socket
CFSocketRef theSocket6; // IPv6 accept or connect socket
CFReadStreamRef theReadStream;
CFWriteStreamRef theWriteStream;
CFRunLoopSourceRef theSource4; // For theSocket4
CFRunLoopSourceRef theSource6; // For theSocket6
CFRunLoopRef theRunLoop;
CFSocketContext theContext;
NSArray *theRunLoopModes;
NSTimer *theConnectTimer;
NSMutableArray *theReadQueue;
AsyncReadPacket *theCurrentRead;
NSTimer *theReadTimer;
NSMutableData *partialReadBuffer;
NSMutableArray *theWriteQueue;
AsyncWritePacket *theCurrentWrite;
NSTimer *theWriteTimer;
id theDelegate;
UInt16 theFlags;
long theUserData;
}
- (id)init;
- (id)initWithDelegate:(id)delegate;
- (id)initWithDelegate:(id)delegate userData:(long)userData;
/* String representation is long but has no "\n". */
- (NSString *)description;
/**
* Use "canSafelySetDelegate" to see if there is any pending business (reads and writes) with the current delegate
* before changing it. It is, of course, safe to change the delegate before connecting or accepting connections.
**/
- (id)delegate;
- (BOOL)canSafelySetDelegate;
- (void)setDelegate:(id)delegate;
/* User data can be a long, or an id or void * cast to a long. */
- (long)userData;
- (void)setUserData:(long)userData;
/* Don't use these to read or write. And don't close them either! */
- (CFSocketRef)getCFSocket;
- (CFReadStreamRef)getCFReadStream;
- (CFWriteStreamRef)getCFWriteStream;
// Once one of the accept or connect methods are called, the AsyncSocket instance is locked in
// and the other accept/connect methods can't be called without disconnecting the socket first.
// If the attempt fails or times out, these methods either return NO or
// call "onSocket:willDisconnectWithError:" and "onSockedDidDisconnect:".
// When an incoming connection is accepted, AsyncSocket invokes several delegate methods.
// These methods are (in chronological order):
// 1. onSocket:didAcceptNewSocket:
// 2. onSocket:wantsRunLoopForNewSocket:
// 3. onSocketWillConnect:
//
// Your server code will need to retain the accepted socket (if you want to accept it).
// The best place to do this is probably in the onSocket:didAcceptNewSocket: method.
//
// After the read and write streams have been setup for the newly accepted socket,
// the onSocket:didConnectToHost:port: method will be called on the proper run loop.
//
// Multithreading Note: If you're going to be moving the newly accepted socket to another run
// loop by implementing onSocket:wantsRunLoopForNewSocket:, then you should wait until the
// onSocket:didConnectToHost:port: method before calling read, write, or startTLS methods.
// Otherwise read/write events are scheduled on the incorrect runloop, and chaos may ensue.
/**
* Tells the socket to begin listening and accepting connections on the given port.
* When a connection comes in, the AsyncSocket instance will call the various delegate methods (see above).
* The socket will listen on all available interfaces (e.g. wifi, ethernet, etc)
**/
- (BOOL)acceptOnPort:(UInt16)port error:(NSError **)errPtr;
/**
* This method is the same as acceptOnPort:error: with the additional option
* of specifying which interface to listen on. So, for example, if you were writing code for a server that
* has multiple IP addresses, you could specify which address you wanted to listen on. Or you could use it
* to specify that the socket should only accept connections over ethernet, and not other interfaces such as wifi.
* You may also use the special strings "localhost" or "loopback" to specify that
* the socket only accept connections from the local machine.
*
* To accept connections on any interface pass nil, or simply use the acceptOnPort:error: method.
**/
- (BOOL)acceptOnInterface:(NSString *)interface port:(UInt16)port error:(NSError **)errPtr;
/**
* Connects to the given host and port.
* The host may be a domain name (e.g. "deusty.com") or an IP address string (e.g. "192.168.0.2")
**/
- (BOOL)connectToHost:(NSString *)hostname onPort:(UInt16)port error:(NSError **)errPtr;
/**
* This method is the same as connectToHost:onPort:error: with an additional timeout option.
* To not time out use a negative time interval, or simply use the connectToHost:onPort:error: method.
**/
- (BOOL)connectToHost:(NSString *)hostname
onPort:(UInt16)port
withTimeout:(NSTimeInterval)timeout
error:(NSError **)errPtr;
/**
* Connects to the given address, specified as a sockaddr structure wrapped in a NSData object.
* For example, a NSData object returned from NSNetService's addresses method.
*
* If you have an existing struct sockaddr you can convert it to a NSData object like so:
* struct sockaddr sa -> NSData *dsa = [NSData dataWithBytes:&remoteAddr length:remoteAddr.sa_len];
* struct sockaddr *sa -> NSData *dsa = [NSData dataWithBytes:remoteAddr length:remoteAddr->sa_len];
**/
- (BOOL)connectToAddress:(NSData *)remoteAddr error:(NSError **)errPtr;
/**
* This method is the same as connectToAddress:error: with an additional timeout option.
* To not time out use a negative time interval, or simply use the connectToAddress:error: method.
**/
- (BOOL)connectToAddress:(NSData *)remoteAddr withTimeout:(NSTimeInterval)timeout error:(NSError **)errPtr;
- (BOOL)connectToAddress:(NSData *)remoteAddr
viaInterfaceAddress:(NSData *)interfaceAddr
withTimeout:(NSTimeInterval)timeout
error:(NSError **)errPtr;
/**
* Disconnects immediately. Any pending reads or writes are dropped.
* If the socket is not already disconnected, the onSocketDidDisconnect delegate method
* will be called immediately, before this method returns.
*
* Please note the recommended way of releasing an AsyncSocket instance (e.g. in a dealloc method)
* [asyncSocket setDelegate:nil];
* [asyncSocket disconnect];
* [asyncSocket release];
**/
- (void)disconnect;
/**
* Disconnects after all pending reads have completed.
* After calling this, the read and write methods will do nothing.
* The socket will disconnect even if there are still pending writes.
**/
- (void)disconnectAfterReading;
/**
* Disconnects after all pending writes have completed.
* After calling this, the read and write methods will do nothing.
* The socket will disconnect even if there are still pending reads.
**/
- (void)disconnectAfterWriting;
/**
* Disconnects after all pending reads and writes have completed.
* After calling this, the read and write methods will do nothing.
**/
- (void)disconnectAfterReadingAndWriting;
/* Returns YES if the socket and streams are open, connected, and ready for reading and writing. */
- (BOOL)isConnected;
/**
* Returns the local or remote host and port to which this socket is connected, or nil and 0 if not connected.
* The host will be an IP address.
**/
- (NSString *)connectedHost;
- (UInt16)connectedPort;
- (NSString *)localHost;
- (UInt16)localPort;
/**
* Returns the local or remote address to which this socket is connected,
* specified as a sockaddr structure wrapped in a NSData object.
*
* See also the connectedHost, connectedPort, localHost and localPort methods.
**/
- (NSData *)connectedAddress;
- (NSData *)localAddress;
/**
* Returns whether the socket is IPv4 or IPv6.
* An accepting socket may be both.
**/
- (BOOL)isIPv4;
- (BOOL)isIPv6;
// The readData and writeData methods won't block (they are asynchronous).
//
// When a read is complete the onSocket:didReadData:withTag: delegate method is called.
// When a write is complete the onSocket:didWriteDataWithTag: delegate method is called.
//
// You may optionally set a timeout for any read/write operation. (To not timeout, use a negative time interval.)
// If a read/write opertion times out, the corresponding "onSocket:shouldTimeout..." delegate method
// is called to optionally allow you to extend the timeout.
// Upon a timeout, the "onSocket:willDisconnectWithError:" method is called, followed by "onSocketDidDisconnect".
//
// The tag is for your convenience.
// You can use it as an array index, step number, state id, pointer, etc.
/**
* Reads the first available bytes that become available on the socket.
*
* If the timeout value is negative, the read operation will not use a timeout.
**/
- (void)readDataWithTimeout:(NSTimeInterval)timeout tag:(long)tag;
/**
* Reads the first available bytes that become available on the socket.
* The bytes will be appended to the given byte buffer starting at the given offset.
* The given buffer will automatically be increased in size if needed.
*
* If the timeout value is negative, the read operation will not use a timeout.
* If the buffer if nil, the socket will create a buffer for you.
*
* If the bufferOffset is greater than the length of the given buffer,
* the method will do nothing, and the delegate will not be called.
*
* If you pass a buffer, you must not alter it in any way while AsyncSocket is using it.
* After completion, the data returned in onSocket:didReadData:withTag: will be a subset of the given buffer.
* That is, it will reference the bytes that were appended to the given buffer.
**/
- (void)readDataWithTimeout:(NSTimeInterval)timeout
buffer:(NSMutableData *)buffer
bufferOffset:(NSUInteger)offset
tag:(long)tag;
/**
* Reads the first available bytes that become available on the socket.
* The bytes will be appended to the given byte buffer starting at the given offset.
* The given buffer will automatically be increased in size if needed.
* A maximum of length bytes will be read.
*
* If the timeout value is negative, the read operation will not use a timeout.
* If the buffer if nil, a buffer will automatically be created for you.
* If maxLength is zero, no length restriction is enforced.
*
* If the bufferOffset is greater than the length of the given buffer,
* the method will do nothing, and the delegate will not be called.
*
* If you pass a buffer, you must not alter it in any way while AsyncSocket is using it.
* After completion, the data returned in onSocket:didReadData:withTag: will be a subset of the given buffer.
* That is, it will reference the bytes that were appended to the given buffer.
**/
- (void)readDataWithTimeout:(NSTimeInterval)timeout
buffer:(NSMutableData *)buffer
bufferOffset:(NSUInteger)offset
maxLength:(NSUInteger)length
tag:(long)tag;
/**
* Reads the given number of bytes.
*
* If the timeout value is negative, the read operation will not use a timeout.
*
* If the length is 0, this method does nothing and the delegate is not called.
**/
- (void)readDataToLength:(NSUInteger)length withTimeout:(NSTimeInterval)timeout tag:(long)tag;
/**
* Reads the given number of bytes.
* The bytes will be appended to the given byte buffer starting at the given offset.
* The given buffer will automatically be increased in size if needed.
*
* If the timeout value is negative, the read operation will not use a timeout.
* If the buffer if nil, a buffer will automatically be created for you.
*
* If the length is 0, this method does nothing and the delegate is not called.
* If the bufferOffset is greater than the length of the given buffer,
* the method will do nothing, and the delegate will not be called.
*
* If you pass a buffer, you must not alter it in any way while AsyncSocket is using it.
* After completion, the data returned in onSocket:didReadData:withTag: will be a subset of the given buffer.
* That is, it will reference the bytes that were appended to the given buffer.
**/
- (void)readDataToLength:(NSUInteger)length
withTimeout:(NSTimeInterval)timeout
buffer:(NSMutableData *)buffer
bufferOffset:(NSUInteger)offset
tag:(long)tag;
/**
* Reads bytes until (and including) the passed "data" parameter, which acts as a separator.
*
* If the timeout value is negative, the read operation will not use a timeout.
*
* If you pass nil or zero-length data as the "data" parameter,
* the method will do nothing, and the delegate will not be called.
*
* To read a line from the socket, use the line separator (e.g. CRLF for HTTP, see below) as the "data" parameter.
* Note that this method is not character-set aware, so if a separator can occur naturally as part of the encoding for
* a character, the read will prematurely end.
**/
- (void)readDataToData:(NSData *)data withTimeout:(NSTimeInterval)timeout tag:(long)tag;
/**
* Reads bytes until (and including) the passed "data" parameter, which acts as a separator.
* The bytes will be appended to the given byte buffer starting at the given offset.
* The given buffer will automatically be increased in size if needed.
*
* If the timeout value is negative, the read operation will not use a timeout.
* If the buffer if nil, a buffer will automatically be created for you.
*
* If the bufferOffset is greater than the length of the given buffer,
* the method will do nothing, and the delegate will not be called.
*
* If you pass a buffer, you must not alter it in any way while AsyncSocket is using it.
* After completion, the data returned in onSocket:didReadData:withTag: will be a subset of the given buffer.
* That is, it will reference the bytes that were appended to the given buffer.
*
* To read a line from the socket, use the line separator (e.g. CRLF for HTTP, see below) as the "data" parameter.
* Note that this method is not character-set aware, so if a separator can occur naturally as part of the encoding for
* a character, the read will prematurely end.
**/
- (void)readDataToData:(NSData *)data
withTimeout:(NSTimeInterval)timeout
buffer:(NSMutableData *)buffer
bufferOffset:(NSUInteger)offset
tag:(long)tag;
/**
* Reads bytes until (and including) the passed "data" parameter, which acts as a separator.
*
* If the timeout value is negative, the read operation will not use a timeout.
*
* If maxLength is zero, no length restriction is enforced.
* Otherwise if maxLength bytes are read without completing the read,
* it is treated similarly to a timeout - the socket is closed with a AsyncSocketReadMaxedOutError.
* The read will complete successfully if exactly maxLength bytes are read and the given data is found at the end.
*
* If you pass nil or zero-length data as the "data" parameter,
* the method will do nothing, and the delegate will not be called.
* If you pass a maxLength parameter that is less than the length of the data parameter,
* the method will do nothing, and the delegate will not be called.
*
* To read a line from the socket, use the line separator (e.g. CRLF for HTTP, see below) as the "data" parameter.
* Note that this method is not character-set aware, so if a separator can occur naturally as part of the encoding for
* a character, the read will prematurely end.
**/
- (void)readDataToData:(NSData *)data withTimeout:(NSTimeInterval)timeout maxLength:(NSUInteger)length tag:(long)tag;
/**
* Reads bytes until (and including) the passed "data" parameter, which acts as a separator.
* The bytes will be appended to the given byte buffer starting at the given offset.
* The given buffer will automatically be increased in size if needed.
* A maximum of length bytes will be read.
*
* If the timeout value is negative, the read operation will not use a timeout.
* If the buffer if nil, a buffer will automatically be created for you.
*
* If maxLength is zero, no length restriction is enforced.
* Otherwise if maxLength bytes are read without completing the read,
* it is treated similarly to a timeout - the socket is closed with a AsyncSocketReadMaxedOutError.
* The read will complete successfully if exactly maxLength bytes are read and the given data is found at the end.
*
* If you pass a maxLength parameter that is less than the length of the data parameter,
* the method will do nothing, and the delegate will not be called.
* If the bufferOffset is greater than the length of the given buffer,
* the method will do nothing, and the delegate will not be called.
*
* If you pass a buffer, you must not alter it in any way while AsyncSocket is using it.
* After completion, the data returned in onSocket:didReadData:withTag: will be a subset of the given buffer.
* That is, it will reference the bytes that were appended to the given buffer.
*
* To read a line from the socket, use the line separator (e.g. CRLF for HTTP, see below) as the "data" parameter.
* Note that this method is not character-set aware, so if a separator can occur naturally as part of the encoding for
* a character, the read will prematurely end.
**/
- (void)readDataToData:(NSData *)data
withTimeout:(NSTimeInterval)timeout
buffer:(NSMutableData *)buffer
bufferOffset:(NSUInteger)offset
maxLength:(NSUInteger)length
tag:(long)tag;
/**
* Writes data to the socket, and calls the delegate when finished.
*
* If you pass in nil or zero-length data, this method does nothing and the delegate will not be called.
* If the timeout value is negative, the write operation will not use a timeout.
**/
- (void)writeData:(NSData *)data withTimeout:(NSTimeInterval)timeout tag:(long)tag;
/**
* Returns progress of current read or write, from 0.0 to 1.0, or NaN if no read/write (use isnan() to check).
* "tag", "done" and "total" will be filled in if they aren't NULL.
**/
- (float)progressOfReadReturningTag:(long *)tag bytesDone:(NSUInteger *)done total:(NSUInteger *)total;
- (float)progressOfWriteReturningTag:(long *)tag bytesDone:(NSUInteger *)done total:(NSUInteger *)total;
/**
* Secures the connection using SSL/TLS.
*
* This method may be called at any time, and the TLS handshake will occur after all pending reads and writes
* are finished. This allows one the option of sending a protocol dependent StartTLS message, and queuing
* the upgrade to TLS at the same time, without having to wait for the write to finish.
* Any reads or writes scheduled after this method is called will occur over the secured connection.
*
* The possible keys and values for the TLS settings are well documented.
* Some possible keys are:
* - kCFStreamSSLLevel
* - kCFStreamSSLAllowsExpiredCertificates
* - kCFStreamSSLAllowsExpiredRoots
* - kCFStreamSSLAllowsAnyRoot
* - kCFStreamSSLValidatesCertificateChain
* - kCFStreamSSLPeerName
* - kCFStreamSSLCertificates
* - kCFStreamSSLIsServer
*
* Please refer to Apple's documentation for associated values, as well as other possible keys.
*
* If you pass in nil or an empty dictionary, the default settings will be used.
*
* The default settings will check to make sure the remote party's certificate is signed by a
* trusted 3rd party certificate agency (e.g. verisign) and that the certificate is not expired.
* However it will not verify the name on the certificate unless you
* give it a name to verify against via the kCFStreamSSLPeerName key.
* The security implications of this are important to understand.
* Imagine you are attempting to create a secure connection to MySecureServer.com,
* but your socket gets directed to MaliciousServer.com because of a hacked DNS server.
* If you simply use the default settings, and MaliciousServer.com has a valid certificate,
* the default settings will not detect any problems since the certificate is valid.
* To properly secure your connection in this particular scenario you
* should set the kCFStreamSSLPeerName property to "MySecureServer.com".
* If you do not know the peer name of the remote host in advance (for example, you're not sure
* if it will be "domain.com" or "www.domain.com"), then you can use the default settings to validate the
* certificate, and then use the X509Certificate class to verify the issuer after the socket has been secured.
* The X509Certificate class is part of the CocoaAsyncSocket open source project.
**/
- (void)startTLS:(NSDictionary *)tlsSettings;
/**
* For handling readDataToData requests, data is necessarily read from the socket in small increments.
* The performance can be much improved by allowing AsyncSocket to read larger chunks at a time and
* store any overflow in a small internal buffer.
* This is termed pre-buffering, as some data may be read for you before you ask for it.
* If you use readDataToData a lot, enabling pre-buffering will result in better performance, especially on the iPhone.
*
* The default pre-buffering state is controlled by the DEFAULT_PREBUFFERING definition.
* It is highly recommended one leave this set to YES.
*
* This method exists in case pre-buffering needs to be disabled by default for some unforeseen reason.
* In that case, this method exists to allow one to easily enable pre-buffering when ready.
**/
- (void)enablePreBuffering;
/**
* When you create an AsyncSocket, it is added to the runloop of the current thread.
* So for manually created sockets, it is easiest to simply create the socket on the thread you intend to use it.
*
* If a new socket is accepted, the delegate method onSocket:wantsRunLoopForNewSocket: is called to
* allow you to place the socket on a separate thread. This works best in conjunction with a thread pool design.
*
* If, however, you need to move the socket to a separate thread at a later time, this
* method may be used to accomplish the task.
*
* This method must be called from the thread/runloop the socket is currently running on.
*
* Note: After calling this method, all further method calls to this object should be done from the given runloop.
* Also, all delegate calls will be sent on the given runloop.
**/
- (BOOL)moveToRunLoop:(NSRunLoop *)runLoop;
/**
* Allows you to configure which run loop modes the socket uses.
* The default set of run loop modes is NSDefaultRunLoopMode.
*
* If you'd like your socket to continue operation during other modes, you may want to add modes such as
* NSModalPanelRunLoopMode or NSEventTrackingRunLoopMode. Or you may simply want to use NSRunLoopCommonModes.
*
* Accepted sockets will automatically inherit the same run loop modes as the listening socket.
*
* Note: NSRunLoopCommonModes is defined in 10.5. For previous versions one can use kCFRunLoopCommonModes.
**/
- (BOOL)setRunLoopModes:(NSArray *)runLoopModes;
- (BOOL)addRunLoopMode:(NSString *)runLoopMode;
- (BOOL)removeRunLoopMode:(NSString *)runLoopMode;
/**
* Returns the current run loop modes the AsyncSocket instance is operating in.
* The default set of run loop modes is NSDefaultRunLoopMode.
**/
- (NSArray *)runLoopModes;
/**
* In the event of an error, this method may be called during onSocket:willDisconnectWithError: to read
* any data that's left on the socket.
**/
- (NSData *)unreadData;
/* A few common line separators, for use with the readDataToData:... methods. */
+ (NSData *)CRLFData; // 0x0D0A
+ (NSData *)CRData; // 0x0D
+ (NSData *)LFData; // 0x0A
+ (NSData *)ZeroData; // 0x00
@end

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//
// AsyncUdpSocket.h
//
// This class is in the public domain.
// Originally created by Robbie Hanson on Wed Oct 01 2008.
// Updated and maintained by Deusty Designs and the Mac development community.
//
// http://code.google.com/p/cocoaasyncsocket/
//
#import <Foundation/Foundation.h>
@class AsyncSendPacket;
@class AsyncReceivePacket;
extern NSString *const AsyncUdpSocketException;
extern NSString *const AsyncUdpSocketErrorDomain;
typedef NS_ENUM(NSInteger, AsyncUdpSocketError) {
AsyncUdpSocketCFSocketError = kCFSocketError, // From CFSocketError enum
AsyncUdpSocketNoError = 0, // Never used
AsyncUdpSocketBadParameter, // Used if given a bad parameter (such as an improper address)
AsyncUdpSocketIPv4Unavailable, // Used if you bind/connect using IPv6 only
AsyncUdpSocketIPv6Unavailable, // Used if you bind/connect using IPv4 only (or iPhone)
AsyncUdpSocketSendTimeoutError,
AsyncUdpSocketReceiveTimeoutError
};
@interface AsyncUdpSocket : NSObject
{
CFSocketRef theSocket4; // IPv4 socket
CFSocketRef theSocket6; // IPv6 socket
CFRunLoopSourceRef theSource4; // For theSocket4
CFRunLoopSourceRef theSource6; // For theSocket6
CFRunLoopRef theRunLoop;
CFSocketContext theContext;
NSArray *theRunLoopModes;
NSMutableArray *theSendQueue;
AsyncSendPacket *theCurrentSend;
NSTimer *theSendTimer;
NSMutableArray *theReceiveQueue;
AsyncReceivePacket *theCurrentReceive;
NSTimer *theReceiveTimer;
id theDelegate;
UInt16 theFlags;
long theUserData;
NSString *cachedLocalHost;
UInt16 cachedLocalPort;
NSString *cachedConnectedHost;
UInt16 cachedConnectedPort;
UInt32 maxReceiveBufferSize;
}
/**
* Creates new instances of AsyncUdpSocket.
**/
- (id)init;
- (id)initWithDelegate:(id)delegate;
- (id)initWithDelegate:(id)delegate userData:(long)userData;
/**
* Creates new instances of AsyncUdpSocket that support only IPv4 or IPv6.
* The other init methods will support both, unless specifically binded or connected to one protocol.
* If you know you'll only be using one protocol, these init methods may be a bit more efficient.
**/
- (id)initIPv4;
- (id)initIPv6;
- (id)delegate;
- (void)setDelegate:(id)delegate;
- (long)userData;
- (void)setUserData:(long)userData;
/**
* Returns the local address info for the socket.
*
* Note: Address info may not be available until after the socket has been bind'ed,
* or until after data has been sent.
**/
- (NSString *)localHost;
- (UInt16)localPort;
/**
* Returns the remote address info for the socket.
*
* Note: Since UDP is connectionless by design, connected address info
* will not be available unless the socket is explicitly connected to a remote host/port
**/
- (NSString *)connectedHost;
- (UInt16)connectedPort;
/**
* Returns whether or not this socket has been connected to a single host.
* By design, UDP is a connectionless protocol, and connecting is not needed.
* If connected, the socket will only be able to send/receive data to/from the connected host.
**/
- (BOOL)isConnected;
/**
* Returns whether or not this socket has been closed.
* The only way a socket can be closed is if you explicitly call one of the close methods.
**/
- (BOOL)isClosed;
/**
* Returns whether or not this socket supports IPv4.
* By default this will be true, unless the socket is specifically initialized as IPv6 only,
* or is binded or connected to an IPv6 address.
**/
- (BOOL)isIPv4;
/**
* Returns whether or not this socket supports IPv6.
* By default this will be true, unless the socket is specifically initialized as IPv4 only,
* or is binded or connected to an IPv4 address.
*
* This method will also return false on platforms that do not support IPv6.
* Note: The iPhone does not currently support IPv6.
**/
- (BOOL)isIPv6;
/**
* Returns the mtu of the socket.
* If unknown, returns zero.
*
* Sending data larger than this may result in an error.
* This is an advanced topic, and one should understand the wide range of mtu's on networks and the internet.
* Therefore this method is only for reference and may be of little use in many situations.
**/
- (unsigned int)maximumTransmissionUnit;
/**
* Binds the UDP socket to the given port and optional address.
* Binding should be done for server sockets that receive data prior to sending it.
* Client sockets can skip binding,
* as the OS will automatically assign the socket an available port when it starts sending data.
*
* You cannot bind a socket after its been connected.
* You can only bind a socket once.
* You can still connect a socket (if desired) after binding.
*
* On success, returns YES.
* Otherwise returns NO, and sets errPtr. If you don't care about the error, you can pass nil for errPtr.
**/
- (BOOL)bindToPort:(UInt16)port error:(NSError **)errPtr;
- (BOOL)bindToAddress:(NSString *)localAddr port:(UInt16)port error:(NSError **)errPtr;
/**
* Connects the UDP socket to the given host and port.
* By design, UDP is a connectionless protocol, and connecting is not needed.
*
* Choosing to connect to a specific host/port has the following effect:
* - You will only be able to send data to the connected host/port.
* - You will only be able to receive data from the connected host/port.
* - You will receive ICMP messages that come from the connected host/port, such as "connection refused".
*
* Connecting a UDP socket does not result in any communication on the socket.
* It simply changes the internal state of the socket.
*
* You cannot bind a socket after its been connected.
* You can only connect a socket once.
*
* On success, returns YES.
* Otherwise returns NO, and sets errPtr. If you don't care about the error, you can pass nil for errPtr.
**/
- (BOOL)connectToHost:(NSString *)host onPort:(UInt16)port error:(NSError **)errPtr;
- (BOOL)connectToAddress:(NSData *)remoteAddr error:(NSError **)errPtr;
/**
* Join multicast group
*
* Group should be an IP address (eg @"225.228.0.1")
**/
- (BOOL)joinMulticastGroup:(NSString *)group error:(NSError **)errPtr;
- (BOOL)joinMulticastGroup:(NSString *)group withAddress:(NSString *)interface error:(NSError **)errPtr;
/**
* By default, the underlying socket in the OS will not allow you to send broadcast messages.
* In order to send broadcast messages, you need to enable this functionality in the socket.
*
* A broadcast is a UDP message to addresses like "192.168.255.255" or "255.255.255.255" that is
* delivered to every host on the network.
* The reason this is generally disabled by default is to prevent
* accidental broadcast messages from flooding the network.
**/
- (BOOL)enableBroadcast:(BOOL)flag error:(NSError **)errPtr;
/**
* Asynchronously sends the given data, with the given timeout and tag.
*
* This method may only be used with a connected socket.
*
* If data is nil or zero-length, this method does nothing and immediately returns NO.
* If the socket is not connected, this method does nothing and immediately returns NO.
**/
- (BOOL)sendData:(NSData *)data withTimeout:(NSTimeInterval)timeout tag:(long)tag;
/**
* Asynchronously sends the given data, with the given timeout and tag, to the given host and port.
*
* This method cannot be used with a connected socket.
*
* If data is nil or zero-length, this method does nothing and immediately returns NO.
* If the socket is connected, this method does nothing and immediately returns NO.
* If unable to resolve host to a valid IPv4 or IPv6 address, this method returns NO.
**/
- (BOOL)sendData:(NSData *)data toHost:(NSString *)host port:(UInt16)port withTimeout:(NSTimeInterval)timeout tag:(long)tag;
/**
* Asynchronously sends the given data, with the given timeout and tag, to the given address.
*
* This method cannot be used with a connected socket.
*
* If data is nil or zero-length, this method does nothing and immediately returns NO.
* If the socket is connected, this method does nothing and immediately returns NO.
**/
- (BOOL)sendData:(NSData *)data toAddress:(NSData *)remoteAddr withTimeout:(NSTimeInterval)timeout tag:(long)tag;
/**
* Asynchronously receives a single datagram packet.
*
* If the receive succeeds, the onUdpSocket:didReceiveData:fromHost:port:tag delegate method will be called.
* Otherwise, a timeout will occur, and the onUdpSocket:didNotReceiveDataWithTag: delegate method will be called.
**/
- (void)receiveWithTimeout:(NSTimeInterval)timeout tag:(long)tag;
/**
* Closes the socket immediately. Any pending send or receive operations are dropped.
**/
- (void)close;
/**
* Closes after all pending send operations have completed.
* After calling this, the sendData: and receive: methods will do nothing.
* In other words, you won't be able to add any more send or receive operations to the queue.
* The socket will close even if there are still pending receive operations.
**/
- (void)closeAfterSending;
/**
* Closes after all pending receive operations have completed.
* After calling this, the sendData: and receive: methods will do nothing.
* In other words, you won't be able to add any more send or receive operations to the queue.
* The socket will close even if there are still pending send operations.
**/
- (void)closeAfterReceiving;
/**
* Closes after all pending send and receive operations have completed.
* After calling this, the sendData: and receive: methods will do nothing.
* In other words, you won't be able to add any more send or receive operations to the queue.
**/
- (void)closeAfterSendingAndReceiving;
/**
* Gets/Sets the maximum size of the buffer that will be allocated for receive operations.
* The default size is 9216 bytes.
*
* The theoretical maximum size of any IPv4 UDP packet is UINT16_MAX = 65535.
* The theoretical maximum size of any IPv6 UDP packet is UINT32_MAX = 4294967295.
*
* In practice, however, the size of UDP packets will be much smaller.
* Indeed most protocols will send and receive packets of only a few bytes,
* or will set a limit on the size of packets to prevent fragmentation in the IP layer.
*
* If you set the buffer size too small, the sockets API in the OS will silently discard
* any extra data, and you will not be notified of the error.
**/
- (UInt32)maxReceiveBufferSize;
- (void)setMaxReceiveBufferSize:(UInt32)max;
/**
* When you create an AsyncUdpSocket, it is added to the runloop of the current thread.
* So it is easiest to simply create the socket on the thread you intend to use it.
*
* If, however, you need to move the socket to a separate thread at a later time, this
* method may be used to accomplish the task.
*
* This method must be called from the thread/runloop the socket is currently running on.
*
* Note: After calling this method, all further method calls to this object should be done from the given runloop.
* Also, all delegate calls will be sent on the given runloop.
**/
- (BOOL)moveToRunLoop:(NSRunLoop *)runLoop;
/**
* Allows you to configure which run loop modes the socket uses.
* The default set of run loop modes is NSDefaultRunLoopMode.
*
* If you'd like your socket to continue operation during other modes, you may want to add modes such as
* NSModalPanelRunLoopMode or NSEventTrackingRunLoopMode. Or you may simply want to use NSRunLoopCommonModes.
*
* Note: NSRunLoopCommonModes is defined in 10.5. For previous versions one can use kCFRunLoopCommonModes.
**/
- (BOOL)setRunLoopModes:(NSArray *)runLoopModes;
/**
* Returns the current run loop modes the AsyncSocket instance is operating in.
* The default set of run loop modes is NSDefaultRunLoopMode.
**/
- (NSArray *)runLoopModes;
@end
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#pragma mark -
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@protocol AsyncUdpSocketDelegate
@optional
/**
* Called when the datagram with the given tag has been sent.
**/
- (void)onUdpSocket:(AsyncUdpSocket *)sock didSendDataWithTag:(long)tag;
/**
* Called if an error occurs while trying to send a datagram.
* This could be due to a timeout, or something more serious such as the data being too large to fit in a sigle packet.
**/
- (void)onUdpSocket:(AsyncUdpSocket *)sock didNotSendDataWithTag:(long)tag dueToError:(NSError *)error;
/**
* Called when the socket has received the requested datagram.
*
* Due to the nature of UDP, you may occasionally receive undesired packets.
* These may be rogue UDP packets from unknown hosts,
* or they may be delayed packets arriving after retransmissions have already occurred.
* It's important these packets are properly ignored, while not interfering with the flow of your implementation.
* As an aid, this delegate method has a boolean return value.
* If you ever need to ignore a received packet, simply return NO,
* and AsyncUdpSocket will continue as if the packet never arrived.
* That is, the original receive request will still be queued, and will still timeout as usual if a timeout was set.
* For example, say you requested to receive data, and you set a timeout of 500 milliseconds, using a tag of 15.
* If rogue data arrives after 250 milliseconds, this delegate method would be invoked, and you could simply return NO.
* If the expected data then arrives within the next 250 milliseconds,
* this delegate method will be invoked, with a tag of 15, just as if the rogue data never appeared.
*
* Under normal circumstances, you simply return YES from this method.
**/
- (BOOL)onUdpSocket:(AsyncUdpSocket *)sock
didReceiveData:(NSData *)data
withTag:(long)tag
fromHost:(NSString *)host
port:(UInt16)port;
/**
* Called if an error occurs while trying to receive a requested datagram.
* This is generally due to a timeout, but could potentially be something else if some kind of OS error occurred.
**/
- (void)onUdpSocket:(AsyncUdpSocket *)sock didNotReceiveDataWithTag:(long)tag dueToError:(NSError *)error;
/**
* Called when the socket is closed.
* A socket is only closed if you explicitly call one of the close methods.
**/
- (void)onUdpSocketDidClose:(AsyncUdpSocket *)sock;
@end

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//
// CocoaAsyncSocket.h
// CocoaAsyncSocket
//
// Created by Derek Clarkson on 10/08/2015.
// Copyright © 2015 Robbie Hanson. All rights reserved.
//
@import Foundation;
//! Project version number for CocoaAsyncSocket.
FOUNDATION_EXPORT double cocoaAsyncSocketVersionNumber;
//! Project version string for CocoaAsyncSocket.
FOUNDATION_EXPORT const unsigned char cocoaAsyncSocketVersionString[];
#import <CocoaAsyncSocket/AsyncSocket.h>
#import <CocoaAsyncSocket/AsyncUdpSocket.h>
#import <CocoaAsyncSocket/GCDAsyncSocket.h>
#import <CocoaAsyncSocket/GCDAsyncUdpSocket.h>

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umbrella header "CocoaAsyncSocket.h"
export *
module * { export * }
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