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//
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// BLIPRequest.m
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// MYNetwork
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//
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// Created by Jens Alfke on 5/22/08.
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// Copyright 2008 Jens Alfke. All rights reserved.
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//
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#import "BLIPRequest.h"
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#import "BLIP_Internal.h"
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#import "BLIPWriter.h"
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#import "BLIPReader.h"
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#import "Target.h"
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#import "Logging.h"
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#import "Test.h"
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#import "ExceptionUtils.h"
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@implementation BLIPRequest
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- (id) _initWithConnection: (BLIPConnection*)connection
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body: (NSData*)body
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properties: (NSDictionary*)properties
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{
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self = [self _initWithConnection: connection
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isMine: YES
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flags: kBLIP_MSG
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number: 0
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body: body];
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if( self ) {
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_isMutable = YES;
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if( body )
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self.body = body;
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if( properties )
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[self.mutableProperties setAllProperties: properties];
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}
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return self;
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}
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+ (BLIPRequest*) requestWithBody: (NSData*)body
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{
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return [[[self alloc] _initWithConnection: nil body: body properties: nil] autorelease];
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}
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+ (BLIPRequest*) requestWithBody: (NSData*)body
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properties: (NSDictionary*)properties
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{
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return [[[self alloc] _initWithConnection: nil body: body properties: properties] autorelease];
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}
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- (void) dealloc
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{
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[_response release];
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[super dealloc];
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}
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- (BOOL) noReply {return (_flags & kBLIP_NoReply) != 0;}
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- (void) setNoReply: (BOOL)noReply {[self _setFlag: kBLIP_NoReply value: noReply];}
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- (BLIPConnection*) connection {return _connection;}
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- (void) setConnection: (BLIPConnection*)conn
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{
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Assert(_isMine && !_sent,@"Connection can only be set before sending");
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setObj(&_connection,conn);
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}
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- (BLIPResponse*) send
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{
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Assert(_connection,@"%@ has no connection to send over",self);
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Assert(!_sent,@"%@ was already sent",self);
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[self _encode];
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BLIPResponse *response = self.response;
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if( [(BLIPWriter*)_connection.writer sendRequest: self response: response] )
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self.sent = YES;
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else
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response = nil;
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return response;
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}
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- (BLIPResponse*) response
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{
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if( ! _response && ! self.noReply )
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_response = [[BLIPResponse alloc] _initWithRequest: self];
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return _response;
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}
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- (void) deferResponse
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{
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// This will allocate _response, causing -repliedTo to become YES, so BLIPConnection won't
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// send an automatic empty response after the current request handler returns.
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LogTo(BLIP,@"Deferring response to %@",self);
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[self response];
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}
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- (BOOL) repliedTo
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{
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return _response != nil;
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}
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- (void) respondWithData: (NSData*)data {self.response.body = data; [self.response send];}
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- (void) respondWithString: (NSString*)string {[self respondWithData: [string dataUsingEncoding: NSUTF8StringEncoding]];}
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- (void) respondWithError: (NSError*)error {self.response.error = error; [self.response send];}
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- (void) respondWithErrorCode: (int)errorCode message: (NSString*)errorMessage
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{
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[self respondWithError: BLIPMakeError(errorCode, @"%@",errorMessage)];
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}
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- (void) respondWithException: (NSException*)exception
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{
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[self respondWithError: BLIPMakeError(kBLIPError_HandlerFailed, @"%@", exception.reason)];
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}
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@end
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#pragma mark -
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@implementation BLIPResponse
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- (id) _initWithRequest: (BLIPRequest*)request
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{
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Assert(request);
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self = [super _initWithConnection: request.connection
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isMine: !request.isMine
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flags: kBLIP_RPY | kBLIP_MoreComing
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number: request.number
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body: nil];
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if (self != nil) {
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if( _isMine ) {
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_isMutable = YES;
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if( request.urgent )
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_flags |= kBLIP_Urgent;
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} else {
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_flags |= kBLIP_MoreComing;
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}
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}
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return self;
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}
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- (void) dealloc
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{
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[_error release];
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[_onComplete release];
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[super dealloc];
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}
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- (NSError*) error
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{
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if( ! (_flags & kBLIP_ERR) )
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return nil;
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NSMutableDictionary *userInfo = [[self.properties allProperties] mutableCopy];
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NSString *domain = [userInfo objectForKey: @"Error-Domain"];
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int code = [[userInfo objectForKey: @"Error-Code"] intValue];
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if( domain==nil || code==0 ) {
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domain = BLIPErrorDomain;
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if( code==0 )
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code = kBLIPError_Unspecified;
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}
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[userInfo removeObjectForKey: @"Error-Domain"];
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[userInfo removeObjectForKey: @"Error-Code"];
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return [NSError errorWithDomain: domain code: code userInfo: userInfo];
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}
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- (void) _setError: (NSError*)error
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{
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_flags &= ~kBLIP_TypeMask;
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if( error ) {
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// Setting this stuff is a PITA because this object might be technically immutable,
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// in which case the standard setters would barf if I called them.
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_flags |= kBLIP_ERR;
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setObj(&_body,nil);
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setObj(&_mutableBody,nil);
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BLIPMutableProperties *errorProps = [self.properties mutableCopy];
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NSDictionary *userInfo = error.userInfo;
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for( NSString *key in userInfo ) {
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id value = $castIf(NSString,[userInfo objectForKey: key]);
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if( value )
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[errorProps setValue: value ofProperty: key];
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}
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[errorProps setValue: error.domain ofProperty: @"Error-Domain"];
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[errorProps setValue: $sprintf(@"%i",error.code) ofProperty: @"Error-Code"];
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setObj(&_properties,errorProps);
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[errorProps release];
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} else {
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_flags |= kBLIP_RPY;
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[self.mutableProperties setAllProperties: nil];
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}
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}
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- (void) setError: (NSError*)error
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{
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Assert(_isMine && _isMutable);
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[self _setError: error];
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}
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- (BOOL) send
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{
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Assert(_connection,@"%@ has no connection to send over",self);
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Assert(!_sent,@"%@ was already sent",self);
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[self _encode];
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return (self.sent = [(BLIPWriter*)_connection.writer sendMessage: self]);
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}
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@synthesize onComplete=_onComplete;
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- (void) setComplete: (BOOL)complete
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{
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[super setComplete: complete];
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if( complete && _onComplete ) {
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@try{
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[_onComplete invokeWithSender: self];
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}catchAndReport(@"BLIPResponse onComplete target");
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}
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}
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- (void) _connectionClosed
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{
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[super _connectionClosed];
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if( !_isMine ) {
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// Change incoming response to an error:
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_isMutable = YES;
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[_properties autorelease];
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_properties = [_properties mutableCopy];
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[self _setError: BLIPMakeError(kBLIPError_Disconnected,
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@"Connection closed before response was received")];
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_isMutable = NO;
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}
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}
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@end
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/*
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Copyright (c) 2008, Jens Alfke <jens@mooseyard.com>. All rights reserved.
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Redistribution and use in source and binary forms, with or without modification, are permitted
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provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this list of conditions
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and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice, this list of conditions
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and the following disclaimer in the documentation and/or other materials provided with the
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distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRI-
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BUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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