Socket Communication (i)

////VIEWCONTROLLER.M//Socket1////Created by Arenoba on 16/5/7.//copyright©2016 year aren. All rights reserved.//#import "ViewController.h"@interfaceViewcontroller () <nsstreamdelegate, Uitextfielddelegate, Uitableviewdatasource, uitableviewdelegate>{Nsinputstream*_inputstream; Nsoutputstream*_outstream;}//@property (Weak, nonatomic) Iboutlet nslayoutconstraint *bottomviewconstraint;@property (Weak, nonatomic) Iboutlet UIView *commentview;//The parent view of the text box that sends the message, setting its frame depending on whether the keyboard appears or not@property (Weak, nonatomic) iboutlet UITableView *TableView, @property (nonatomic, strong) Nsmutablearray*CHATMSGS;//Chat Message Array@end@implementationViewcontroller-(Nsmutablearray *) chatmsgs{if(!_chatmsgs) {_chatmsgs=[Nsmutablearray array]; }    return_chatmsgs;}//button to connect to the server-(Ibaction) Connect: (ID) sender{//1. Get the IP address and port number of the serverNSString *host =@"127.0.0.1"; intPort =8080; //2. Get the input and output streamCfreadstreamref Readref;        Cfwritestreamref Writeref; //3. Convert C-Language objects to OC objects_inputstream = (__bridge Nsinputstream *) (READREF); _outstream= (__bridge Nsoutputstream *) (WRITEREF); //4. Establish a connectionCfstreamcreatepairwithsockettohost (NULL, __bridge cfstringref) host, Port, &readref, &writeref); //5. Setting up the agent_inputstream.Delegate=Self ; _outstream.Delegate=Self ;#pragmaMark---If you do not add to the main loop, the proxy method may not execute----//6. Throw into the main loop[_inputstream scheduleinrunloop:[nsrunloop Mainrunloop] formode:nsdefaultrunloopmode];        [_outstream Scheduleinrunloop:[nsrunloop Mainrunloop] formode:nsdefaultrunloopmode]; //7. Open the input/output stream[_inputstream Open]; [_outstream Open];#pragmaMark---The end of the link, you need to remove the input and output stream from the main loop and close the input and output stream, executing in the proxy method----    }//Login Button-(ibaction) Login: (ID) sender{//command to log inNSString *loginstring =@"Iam:arenouba"; //convert to NSData typeNSData *data =[loginstring datausingencoding:nsutf8stringencoding]; //The output stream sends the login data to the server[_outstream write:data.bytes maxLength:data.length]; }#pragmaMark---Input stream read the data returned by the server XMPP is already encapsulated, so we don't have to deal with----(void) readdata{//create a buffer that can put 1024 bytesuint8_t buf[1024x768]; //Len Returns the number of bytes actually storedNsinteger len = [_inputstream read:buf maxLength:sizeof(BUF)];//sizeof (BUF)//Convert bytes to stringsNSData *data =[NSData datawithbytes:buf Length:len]; //convert data received from the server to a stringNSString *recievestring =[[NSString alloc] Initwithdata:data encoding:nsutf8stringencoding]; //Refresh Data[self reloaddatawithtext:recievestring]; NSLog (@"%@", recievestring);}#pragmaMark---Click the Send button to get the text of the input box and refresh TableView----(BOOL) Textfieldshouldreturn: (Uitextfield *) textfield{NSString*text =Textfield.text; NSData*data =[text datausingencoding:nsutf8stringencoding];    [Self reloaddatawithtext:text]; //sending data to the server[_outstream write:data.bytes maxLength:data.length]; //Empty text box when send is completeTextfield.text =Nil; returnYES;}- (void) Reloaddatawithtext: (NSString *) text{//add data from the text input box to the message array[Self.chatmsgs Addobject:text]; //Refresh[Self.tableview Reloaddata]; //send a message so that TableView scrolls up one lineNsindexpath *lastindexpath = [Nsindexpath indexPathForRow:self.chatMsgs.count-1Insection:0]; [Self.tableview scrolltorowatindexpath:lastindexpath Atscrollposition:uitableviewscrollpositionbottom Animated:    YES]; }#pragmaWhen Mark---is about to drag, the keyboard disappears----(void) Scrollviewwillbegindragging: (Uiscrollview *) scrollview{[Self.view endediting:yes];}#pragmaMark----nsstreamdelegate------(void) Stream: (Nsstream *) Astream handleevent: (nsstreamevent) eventcode{#warningMark---This is done in the main thread.NSLog (@"%@", [Nsthread CurrentThread]); /*nsstreameventnone = 0, nsstreameventopencompleted = 1UL << 0, input output stream open complete Nsstreameventhasbytesavaila ble = 1UL << 1, byte readable nsstreameventhasspaceavailable = 1UL << 2, can send byte nsstreameventerroroccurred = 1 UL << 3, connection error nsstreameventendencountered = 1UL << 4 end of connection*/        Switch(EventCode) { CaseNsstreameventopencompleted:nslog (@"input/output stream open complete");  Break;  CaseNsstreameventhasbytesavailable:nslog (@"byte-readable");  Break;  CaseNsstreameventhasspaceavailable:nslog (@"can send bytes");  Break;  CaseNsstreameventerroroccurred:nslog (@"Connection Error");  Break;  CaseNsstreameventendencountered:nslog (@"End of Connection"); //turn off the input and output stream[_inputstream Close];                        [_outstream Close]; //removing from the main loop[_inputstream removefromrunloop:[nsrunloop Mainrunloop] formode:nsdefaultrunloopmode];                        [_outstream Removefromrunloop:[nsrunloop Mainrunloop] formode:nsdefaultrunloopmode];  Break; default:             Break; }    }- (void) viewdidload {[Super viewdidload]; //when the listening keyboard is going to appear[[Nsnotificationcenter Defaultcenter] addobserver:self selector: @selector (Keyboardwillchang:) Name: UikeyboardwillchangeframenotificationObject: nil]; //when the listening keyboard is going to be hidden[[Nsnotificationcenter Defaultcenter] addobserver:self selector: @selector (keyboardwillhidden:) Name: UikeyboardwillhidenotificationObject: nil]; Self.tableview.Delegate=Self ; Self.tableView.dataSource=Self ; [Self.view insertsubview:_tableview Atindex:0]; //additional setup after loading the view, typically from a nib.}- (void) Keyboardwillchang: (Nsnotification *) noti{NSLog (@"%@", Noti.userinfo); //the Y value of the keyboard endCGRect Kbendframe =[Noti.userinfo[uikeyboardframeenduserinfokey] cgrectvalue]; [UIView Animatewithduration:[noti.userinfo[uikeyboardanimationdurationuserinfokey] floatvalue] Animations:^{self.commentView.transform= Cgaffinetransformmaketranslation (0, -kbEndFrame.size.height); }];}- (void) Keyboardwillhidden: (Nsnotification *) noti{//the Y value of the keyboard end[UIView Animatewithduration:[noti.userinfo[uikeyboardanimationdurationuserinfokey] Floatvalue] animations:^{self.commentView.transform=cgaffinetransformidentity; }];}-(Nsinteger) TableView: (UITableView *) TableView numberofrowsinsection: (nsinteger) section{returnSelf.chatMsgs.count;}-(UITableViewCell *) TableView: (UITableView *) TableView Cellforrowatindexpath: (Nsindexpath *) indexpath{StaticNSString *id =@"Cell"; UITableViewCell*cell =[TableView Dequeuereusablecellwithidentifier:id];

If (cell = = Nil) {

cell = [[uitableviewcell alloc] initwithstyle:uitableviewcellstyledefault reuseidentifier: ID];

}

Cell.textLabel.text = Self.chatmsgs[indexpath.row];     return cell;} -(void) didreceivememorywarning {    [super didreceivememorywarning];     // Dispose of any resources the can be recreated. }@end

Socket Communication (i)