iOS 封装客户端socket通信

原创于 2018-05-22 16:33:22 发布 · 620 阅读

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CC 4.0 BY-SA版权

本文介绍了如何在iOS中封装客户端的socket通信，利用GCDAsyncSocket第三方库进行实现。详细讲解了.h和.m文件的配置，并展示了使用方法，通过AFmPosSocketManager发送和接收数据，状态码可根据需求自定义。

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首先导入 GCDAsyncSocket 第三方库

.h部分

#import <Foundation/Foundation.h>
#import "GCDAsyncSocket.h"

#define  AFMPOS_SOCKET_BANK_SERVER_IP           @"111.17.212.35"      //后台服务器IP
#define  AFMPOS_SOCKET_BANK_SERVER_PORT         5000                  //后台服务器端口号

@interface AFmPosSocketManager : NSObject<GCDAsyncSocketDelegate>

@property(nonatomic,strong) GCDAsyncSocket *AFmPosSocket;
@property (nonatomic, copy) void (^AFmPosSocketRevDataBlock)(NSData * RevData);

- (NSInteger)AFmPosSocketDataTrans:(NSData *)sendData revData:(NSData **)revData;

@end

.m部分

#import "AFmPosSocketManager.h"

@implementation AFmPosSocketManager

@synthesize AFmPosSocket;
NSData *m_AFmPosRevData;
bool m_AFmPosConnectStatus = false;

-(NSInteger) AFmPosSocketDataTrans:(NSData *)sendData revData:(NSData **)revData
{
    NSInteger iResult = -1;
    
    //连接socket
    iResult = [self AFmPosConnectServer];
    if (iResult != AFMPOS_OPERAT_SUC) {
        return iResult;
    }
    
    if ( m_AFmPosConnectStatus == false) {
        return AFMPOS_OPERAT_ERRFAILS;
    }
    
    //socket通信
    iResult = [self AFmPosSendAndRevData:sendData];
    if (iResult != AFMPOS_OPERAT_SUC) {
        return iResult;
    }
    
    *revData = m_AFmPosRevData;
    
    //断开socket
    [AFmPosSocket disconnect];
    
    return AFMPOS_OPERAT_SUC;
}

- (NSInteger)AFmPosConnectServer
{
    AFmPosSocket = [[GCDAsyncSocket alloc]initWithDelegate:self delegateQueue:dispatch_get_main_queue()];
    NSError *err = nil;
    if(![AFmPosSocket connectToHost:AFMPOS_SOCKET_BANK_SERVER_IP onPort:AFMPOS_SOCKET_BANK_SERVER_PORT error:&err])
    {
        NSLog(@"==========>%@AFmPosConnectServer fail:",err.description);
        return AFMPOS_CMD_OPERAT_ERR_CODE_CONNECT_BANK_ERR;
    }
    
    NSLog(@"==========>AFmPosConnectServer begin！");
    __block dispatch_semaphore_t sem = dispatch_semaphore_create(0);
    dispatch_queue_t queue = dispatch_queue_create("StudyBlocks", NULL);
    dispatch_async(queue, ^(void) {
        
        self.AFmPosSocketRevDataBlock = ^(NSData * RevData){
            m_AFmPosRevData = [[NSData alloc] initWithData:RevData];
            dispatch_semaphore_signal(sem);
        };
    });
    dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
    
    dispatch_release(sem);
    dispatch_release(queue);
    
    return AFMPOS_OPERAT_SUC;
}

-(void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(uint16_t)port
{
    NSLog(@"==========>Connect To Server Sucess！");
    m_AFmPosConnectStatus = true;
    
    [AFmPosSocket readDataWithTimeout:10 tag:0];
    if (self.AFmPosSocketRevDataBlock) {
        self.AFmPosSocketRevDataBlock(nil);
    }
}


- (NSInteger)AFmPosSendAndRevData:(NSData *)sendData
{
    NSLog(@"==========>AFmPosSendAndRevData begin！");
    
    //数据打印
    Byte *printData = (Byte *)[sendData bytes];
    printf("==========>8583 SendData:");
    for (int i= 0; i< [sendData length]; i++) {
        printf("%02X",printData[i]);
    }
    printf("\n");

    [AFmPosSocket writeData:sendData withTimeout:10 tag:0];
    [AFmPosSocket readDataWithTimeout:10 tag:0];
    
    __block dispatch_semaphore_t sem = dispatch_semaphore_create(0);
    dispatch_queue_t queue = dispatch_queue_create("StudyBlocks", NULL);
    dispatch_async(queue, ^(void) {
        
        self.AFmPosSocketRevDataBlock = ^(NSData * RevData){
            m_AFmPosRevData = [[NSData alloc] initWithData:RevData];
            dispatch_semaphore_signal(sem);
        };
    });
    dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
    
    dispatch_release(sem);
    dispatch_release(queue);
    
    return AFMPOS_OPERAT_SUC;
}


//socket 接收数据
-(void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag
{
    Byte *printData = (Byte *)[data bytes];
    printf("==========>8583 RevData:");
    for (int i= 0; i< [data length]; i++) {
        printf("%02X",printData[i]);
    }
    printf("\n");
    
    //数据处理
    //透传数据处理
    if (self.AFmPosSocketRevDataBlock) {
        m_AFmPosRevData = [[NSData alloc] initWithData:data];
        self.AFmPosSocketRevDataBlock(data);
    }
    
    [AFmPosSocket readDataWithTimeout:10 tag:0];
}


- (void)socketDidDisconnect:(GCDAsyncSocket *)sock withError:(NSError *)err
{
    NSLog(@"==========>Disconnect Server Sucess！%@",err);    
    m_AFmPosConnectStatus = false;
    if (self.AFmPosSocketRevDataBlock) {
        self.AFmPosSocketRevDataBlock(m_AFmPosRevData);
    }
}

@end

使用方法：

AFmPosSocketManager *m_socketManager = [[AFmPosSocketManager alloc]init];

NSData *recvData;

iResult = [m_socketManager AFmPosSocketDataTrans:sendData revData:&recvData];

文中返回的状态码，可以根据自己的代码自己去定义。