CFNetwrok网络请求4

////  CFNetworkTest4.m//  TestCF////  Created by Jabez on 15/5/11.//  Copyright (c) 2015年 John. All rights reserved.//#import "CFNetworkTest4.h"#import <pthread.h>@implementation CFNetworkTest4static CFRunLoopRef backgroundRunLoop;static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;void releaseContext(void *infoPtr) {    CFRelease(infoPtr);}void *retainContext(void *infoPtr) {    CFRetain(infoPtr);    return infoPtr;}void cancelTheStream(CFReadStreamRef readStream) {    CFReadStreamUnscheduleFromRunLoop(readStream, CFRunLoopGetCurrent(), kCFRunLoopCommonModes);    CFReadStreamClose(readStream);    CFRelease(readStream);}void *threadMain(void *info) {    pthread_mutex_lock(&mutex);    backgroundRunLoop = CFRunLoopGetCurrent();    CFRunLoopSourceContext context = {0, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL};    CFRunLoopSourceRef source = CFRunLoopSourceCreate(kCFAllocatorDefault, 0, &context);    CFRunLoopAddSource(CFRunLoopGetCurrent(), source, kCFRunLoopDefaultMode);    pthread_cond_signal(&cond);    pthread_mutex_unlock(&mutex);    CFRunLoopRun();        return NULL;}void createThread(void) {    pthread_t threadID;    pthread_create(&threadID, NULL, threadMain, NULL);}void getResponse(CFReadStreamRef readStream, CFStreamEventType type, void *infoPtr) {    if (type == kCFStreamEventEndEncountered) {        CFHTTPMessageRef response = (CFHTTPMessageRef)infoPtr;                CFIndex statusCode = CFHTTPMessageGetResponseStatusCode(response);        CFDataRef responseData = CFHTTPMessageCopyBody(response);                CFIndex count = CFDataGetLength(responseData);        CFStringRef responseJson = CFStringCreateWithBytes(kCFAllocatorDefault, CFDataGetBytePtr(responseData), count, kCFStringEncodingUTF8, YES);        NSString *jsonString = [NSString stringWithFormat:@"%@", (__bridge NSString *)responseJson];        NSLog(@"jsongString: %@", jsonString);                CFRelease(responseJson);        CFRelease(responseData);        cancelTheStream(readStream);    } else if (type == kCFStreamEventHasBytesAvailable) {        UInt8 buffer[100];        CFIndex length = CFReadStreamRead(readStream, buffer, 100);        CFHTTPMessageAppendBytes((CFHTTPMessageRef)infoPtr, buffer, length);    } else if (type == kCFStreamEventErrorOccurred) {        cancelTheStream(readStream);        return;    }}- (void)sendMessage{    [self request];}- (void)request{    CFStringRef urlString = CFSTR("http://jabez.local/~jabez/test/response/response0");    CFURLRef url = CFURLCreateWithString(kCFAllocatorDefault, urlString, NULL);        CFStringRef method = CFSTR("POST");        CFHTTPMessageRef request = CFHTTPMessageCreateRequest(kCFAllocatorDefault, method, url, kCFHTTPVersion1_1);        CFHTTPMessageSetHeaderFieldValue(request, CFSTR("Content-Type"), CFSTR("application-json"));        CFStringRef jsonBody = CFSTR("key=Test4");    CFDataRef jsonData = CFStringCreateExternalRepresentation(kCFAllocatorDefault, jsonBody, kCFStringEncodingUTF8, 0);    CFHTTPMessageSetBody(request, jsonData);        CFHTTPMessageRef response = CFHTTPMessageCreateEmpty(kCFAllocatorDefault, NO);    CFStreamClientContext context = {0, response, retainContext, releaseContext, NULL};        CFOptionFlags registeredEvent = kCFStreamEventHasBytesAvailable | kCFStreamEventEndEncountered | kCFStreamEventErrorOccurred;    CFReadStreamRef readStream = CFReadStreamCreateForHTTPRequest(kCFAllocatorDefault, request);    CFReadStreamSetClient(readStream, registeredEvent, getResponse, &context);    if (backgroundRunLoop == NULL) {        createThread();        pthread_cond_wait(&cond, &mutex);    }        CFReadStreamScheduleWithRunLoop(readStream, backgroundRunLoop, kCFRunLoopCommonModes);    CFReadStreamOpen(readStream);        CFRelease(url);    CFRelease(urlString);    CFRelease(method);    CFRelease(request);    CFRelease(jsonBody);    CFRelease(jsonData);}@end