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added VVCURLDL for doing simple synchronous and asynchronous URL down…
…loading and HTTP POSTing because NSURLConnection is slow, big, and apparently not threadsafe
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raycutler
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Sep 17, 2009
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,48 @@ | ||
| // | ||
| // VVCURLDL.h | ||
| // VVOpenSource | ||
| // | ||
| // Created by bagheera on 9/17/09. | ||
| // Copyright 2009 __MyCompanyName__. All rights reserved. | ||
| // | ||
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| #import <Cocoa/Cocoa.h> | ||
| #import <curl/curl.h> | ||
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| @protocol VVCURLDLDelegate | ||
| - (void) dlFinished:(id)h; | ||
| @end | ||
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| @interface VVCURLDL : NSObject { | ||
| NSString *urlString; | ||
| CURL *curlHandle; | ||
| NSMutableData *postData; | ||
| NSMutableData *responseData; | ||
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| BOOL returnOnMain; | ||
| } | ||
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| + (id) createWithAddress:(NSString *)a; | ||
| - (id) initWithAddress:(NSString *)a; | ||
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| - (void) perform; | ||
| - (void) performAsync:(BOOL)as withDelegate:(id <VVCURLDLDelegate>)d; | ||
| - (void) _performAsyncWithDelegate:(id <VVCURLDLDelegate>)d; | ||
| - (void) _performWithDelegate:(id <VVCURLDLDelegate>)d; | ||
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| - (void) appendDataToPost:(NSData *)d; | ||
| - (void) appendStringToPost:(NSString *)s; | ||
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| - (void) writePtr:(void *)ptr size:(size_t)s; | ||
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| @property (assign,readonly) BOOL returnOnMain; | ||
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| @end | ||
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| size_t vvcurlWriteFunction(void *ptr, size_t size, size_t nmemb, void *stream); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,149 @@ | ||
| // | ||
| // VVCURLDL.m | ||
| // VVOpenSource | ||
| // | ||
| // Created by bagheera on 9/17/09. | ||
| // Copyright 2009 __MyCompanyName__. All rights reserved. | ||
| // | ||
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| #import "VVCURLDL.h" | ||
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| @implementation VVCURLDL | ||
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| + (id) createWithAddress:(NSString *)a { | ||
| VVCURLDL *returnMe = [[VVCURLDL alloc] initWithAddress:a]; | ||
| if (returnMe == nil) | ||
| return nil; | ||
| return [returnMe autorelease]; | ||
| } | ||
| - (id) initWithAddress:(NSString *)a { | ||
| if (a==nil) | ||
| goto BAIL; | ||
| if (self = [super init]) { | ||
| urlString = [a retain]; | ||
| curlHandle = nil; | ||
| postData = nil; | ||
| responseData = nil; | ||
| returnOnMain = NO; | ||
| return self; | ||
| } | ||
| BAIL: | ||
| [self release]; | ||
| return nil; | ||
| } | ||
| - (void) dealloc { | ||
| if (urlString != nil) { | ||
| [urlString release]; | ||
| urlString = nil; | ||
| } | ||
| if (postData != nil) { | ||
| [postData release]; | ||
| postData = nil; | ||
| } | ||
| if (responseData != nil) { | ||
| [responseData release]; | ||
| responseData = nil; | ||
| } | ||
| [super dealloc]; | ||
| } | ||
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| - (void) perform { | ||
| [self performAsync:NO withDelegate:nil]; | ||
| } | ||
| - (void) performAsync:(BOOL)as withDelegate:(id <VVCURLDLDelegate>)d { | ||
| // if i'm performing asynchronously, spawn a thread (make an autorelease pool!) and go | ||
| if (as) | ||
| [NSThread detachNewThreadSelector:@selector(_performAsyncWithDelegate:) toTarget:self withObject:d]; | ||
| // else just go | ||
| else | ||
| [self _performWithDelegate:d]; | ||
| } | ||
| // DO NOT CALL THIS METHOD DIRECTLY | ||
| - (void) _performAsyncWithDelegate:(id <VVCURLDLDelegate>)d { | ||
| // make a pool | ||
| NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; | ||
| // perform the download | ||
| [self _performWithDelegate:d]; | ||
| // release the pool | ||
| [pool release]; | ||
| } | ||
| // DO NOT CALL THIS METHOD DIRECTLY | ||
| - (void) _performWithDelegate:(id <VVCURLDLDelegate>)d { | ||
| CURLcode err; | ||
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| curlHandle = curl_easy_init(); | ||
| if (curlHandle) { | ||
| // set the URL | ||
| curl_easy_setopt(curlHandle,CURLOPT_URL,[urlString UTF8String]); | ||
| // if there's post data, set that up | ||
| if (postData != nil) { | ||
| curl_easy_setopt(curlHandle,CURLOPT_POSTFIELDS,[postData bytes]); | ||
| } | ||
| // set up a write function so libcurl can send me data it receives | ||
| curl_easy_setopt(curlHandle,CURLOPT_WRITEFUNCTION,vvcurlWriteFunction); | ||
| // i'm going to pass a pointer to myself as the file stream, so i can get back into objective-c | ||
| curl_easy_setopt(curlHandle,CURLOPT_WRITEDATA,self); | ||
| // perform the transfer | ||
| err = curl_easy_perform(curlHandle); | ||
| if (err) { | ||
| NSLog(@"\terr %ld at curl_easy_perform",err); | ||
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| } | ||
| else { | ||
| /* | ||
| if (responseData != nil) { | ||
| NSString *tmpString = [[[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding] autorelease]; | ||
| NSLog(@"%@",tmpString); | ||
| } | ||
| */ | ||
| } | ||
| // clean up after the transfer | ||
| curl_easy_cleanup(curlHandle); | ||
| curlHandle = nil; | ||
| } | ||
| else | ||
| NSLog(@"\terror at curl_easy_init() in %s",__func__); | ||
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| // if there's a delegate, tell the delegate that shit's done | ||
| if ((d!=nil)&&([(id)d conformsToProtocol:@protocol(VVCURLDLDelegate)])) { | ||
| if (returnOnMain) | ||
| [(id)d performSelectorOnMainThread:@selector(dlFinished:) withObject:self waitUntilDone:YES]; | ||
| [(id)d dlFinished:self]; | ||
| } | ||
| } | ||
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| - (void) appendDataToPost:(NSData *)d { | ||
| if (d == nil) | ||
| return; | ||
| if (postData == nil) | ||
| postData = [[NSMutableData dataWithCapacity:0] retain]; | ||
| [postData appendData:d]; | ||
| } | ||
| - (void) appendStringToPost:(NSString *)s { | ||
| if (s == nil) | ||
| return; | ||
| [self appendDataToPost:[s dataUsingEncoding:NSUTF8StringEncoding]]; | ||
| } | ||
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| - (void) writePtr:(void *)ptr size:(size_t)s { | ||
| //NSLog(@"%s",__func__); | ||
| if (responseData == nil) | ||
| responseData = [[NSMutableData dataWithCapacity:0] retain]; | ||
| [responseData appendBytes:ptr length:s]; | ||
| } | ||
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| @synthesize returnOnMain; | ||
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| @end | ||
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| size_t vvcurlWriteFunction(void *ptr, size_t size, size_t nmemb, void *stream) { | ||
| if (stream != nil) | ||
| [(VVCURLDL *)stream writePtr:ptr size:size*nmemb]; | ||
| return size*nmemb; | ||
| } |
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