Networking with NSURLSession
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1 System Frameworks #WWDC15 Networking with NSURLSession Session 711 Luke Case Software Engineer Andreas Garkuscha Software Engineer Dan Vinegrad Software Engineer 2015 Apple Inc. All rights reserved. Redistribution or public display not permitted without written permission from Apple.
2
3 App Transport Security New protocol support in NSURLSession NSURLSession on watchos NSURLSession API changes
4 NSURLSession API for downloading HTTP content Rich set of delegate methods Background download/upload capability
5 HTTP (cleartext)
6 HTTP (cleartext) GET HTTP/ OK
7 HTTP (cleartext)
8 HTTP (cleartext)
9 HTTP (cleartext)
10
11 HTTPS
12 HTTPS
13 HTTPS HTTP over TLS Encryption Integrity Authentication
14 Protecting Customer Data HTTPS: securing HTTP with TLS " to " Server support required Widespread support available All data is sensitive
15 App Transport Security
16 Protecting Customer Data What is App Transport Security (ATS)? Disallows cleartext HTTP URL loads Encourages best practice secure connections Defaults to stronger security Allows configuration via app's Info.plist
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18
19 HTTPS
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21 NSAppTransportSecurity NSExceptionDomains "example.com" NSIncludesSubdomains = YES NSExceptionRequiresForwardSecrecy = NO NSExceptionMinimumTLSVersion = "TLSv1.1"
22 HTTPS
23 HTTPS Media Server
24 NSAppTransportSecurity NSExceptionDomains "media.example.com" NSExceptionAllowsInsecureHTTPLoads = YES
25
26 NSAppTransportSecurity NSAllowsArbitraryLoads = YES
27
28 Server
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30 NSAppTransportSecurity NSAllowsArbitraryLoads NSExceptionDomains "secure.example.com" NSExceptionAllowsInsecureHTTPLoads = NO
31 Configuring ATS Diagnosing issues Active when you build your app for ios 9 and OS X El Capitan " to " is automatic Use NSAllowsArbitraryLoads for quick triage Log NSURLSession errors CFNETWORK_DIAGNOSTICS=1
32 Protecting Customer Data Next steps Use HTTPS for new projects Transition existing apps from HTTP to HTTPS Use exceptions where needed
33 New Protocol Support in NSURLSession Andreas Garkuscha Software Engineer
34 New in NSURLSession
35 New in NSURLSession HTTP/2 RFC 7540
36 New in NSURLSession HTTP/2 RFC 7540
37 New in NSURLSession
38 New in NSURLSession
39 New in NSURLSession Future of the Web Major milestone in the evolution of the Web HTTP/2 Solves HTTP/1.1 problems RFC 7540 Makes the Web faster
40 HTTP/2 in NSURLSession Why a new protocol? HTTP/2 in depth Adoption using NSURLSession
41 Why a New Protocol?
42 Why a New Protocol?
43 Why a New Protocol? FTP HTTP POP3 LDAP RTP SMTP NTP TCP IMAP UDP ARP SNMP PPP SOAP ICMP IP APX Telnet RADIUS VNC SSH AFP smb nfs VoIP DHCP SKYPE RDP WebSocket RIP AIM Bonjour ICQ QUAKE3
44 Why a New Protocol? FTP HTTP POP3 LDAP RTP SMTP NTP TCP IMAP UDP ARP SNMP PPP SOAP ICMP IP APX Telnet RADIUS VNC SSH AFP smb nfs VoIP DHCP SKYPE RDP WebSocket RIP AIM Bonjour ICQ QUAKE3
45 Why a New Protocol?
46 HTTP/1.1 Common Issues
47 HTTP/1.1 Common issues One outstanding request
48 HTTP/1.1 Common issues One outstanding request HTTP pipelining
49 HTTP/1.1 Common issues One outstanding request HTTP pipelining Multiple connections
50 HTTP/1.1 Common issues One outstanding request HTTP pipelining Multiple connections Textual protocol overhead
51 HTTP/1.1 Common issues One outstanding request HTTP pipelining Multiple connections Textual protocol overhead Header compression
52 The Path to HTTP/2 Experimental protocols Specification for HTTP/2 IETF standardization, RFC
53 New in NSURLSession
54 New in NSURLSession HTTP/2 RFC 7540
55
56 HTTP/1.1 HTTP/2
57 HTTP/1.1 HTTP/2 Multiple TCP connections to a host Only one TCP connection
58 HTTP/1.1 HTTP/2 Multiple TCP connections to a host Only one TCP connection Head-of-line blocking Fully multiplexed
59 HTTP/1.1 HTTP/2 Multiple TCP connections to a host Only one TCP connection Head-of-line blocking Fully multiplexed FIFO restrictions Requests have priorities
60 HTTP/2 - Multiplexing Solution for Head-of-Line Blocking problem Time HTTP/1.1: Head-of-Line Blocking (without Pipelining) HTTP/2: Multiplexing Priority Legend Low Medium High
61 HTTP/2 - Multiplexing Solution for Head-of-Line Blocking problem Time HTTP/1.1: Head-of-Line Blocking (without Pipelining) image.jpg styles.css data.xml HTTP/2: Multiplexing Priority Legend Low Medium High
62 HTTP/2 - Multiplexing Solution for Head-of-Line Blocking problem Time HTTP/1.1: Head-of-Line Blocking (without Pipelining) image.jpg GET styles.css data.xml HTTP/2: Multiplexing Priority Legend Low Medium High
63 HTTP/2 - Multiplexing Solution for Head-of-Line Blocking problem Time HTTP/1.1: Head-of-Line Blocking (without Pipelining) image.jpg GET 200 OK styles.css data.xml HTTP/2: Multiplexing Priority Legend Low Medium High
64 HTTP/2 - Multiplexing Solution for Head-of-Line Blocking problem Time HTTP/1.1: Head-of-Line Blocking image.jpg (without Pipelining) styles.css data.xml HTTP/2: Multiplexing Priority Legend Low Medium High
65 HTTP/2 - Multiplexing Solution for Head-of-Line Blocking problem Time HTTP/1.1: Head-of-Line Blocking image.jpg (without Pipelining) styles.css data.xml HTTP/2: Multiplexing Priority Legend Low Medium High
66 HTTP/2 - Multiplexing Solution for Head-of-Line Blocking problem Time HTTP/1.1: Head-of-Line Blocking image.jpg (without Pipelining) styles.css data.xml HTTP/2: Multiplexing Priority Legend Low Medium High
67 HTTP/2 - Multiplexing Solution for Head-of-Line Blocking problem Time HTTP/1.1: Head-of-Line Blocking (with Pipelining) image.jpg styles.css data.xml HTTP/2: Multiplexing Priority Legend Low Medium High
68 HTTP/2 - Multiplexing Solution for Head-of-Line Blocking problem Time HTTP/1.1: Head-of-Line Blocking (with Pipelining) image.jpg styles.css data.xml HTTP/2: Multiplexing Priority Legend Low Medium High
69 HTTP/2 - Multiplexing Solution for Head-of-Line Blocking problem Time HTTP/1.1: Head-of-Line Blocking (with Pipelining) image.jpg styles.css data.xml HTTP/2: Multiplexing image.jpg styles.css data.xml Priority Legend Low Medium High
70 HTTP/2 - Multiplexing Solution for Head-of-Line Blocking problem Time HTTP/1.1: Head-of-Line Blocking (with Pipelining) image.jpg styles.css data.xml HTTP/2: Multiplexing image.jpg styles.css data.xml Priority Legend Low Medium High
71 HTTP/2 - Multiplexing Solution for Head-of-Line Blocking problem Time HTTP/1.1: Head-of-Line Blocking (with Pipelining) image.jpg styles.css data.xml HTTP/2: Multiplexing image.jpg styles.css data.xml Priority Legend Low Medium High
72 HTTP/2 - Multiplexing Solution for Head-of-Line Blocking problem Time HTTP/1.1: Head-of-Line Blocking (with Pipelining) image.jpg styles.css data.xml HTTP/2: Multiplexing image.jpg styles.css data.xml Priority Legend Low Medium High
73 HTTP/2 - Multiplexing Solution for Head-of-Line Blocking problem Time HTTP/1.1: Head-of-Line Blocking (with Pipelining) image.jpg styles.css data.xml HTTP/2: Multiplexing image.jpg styles.css data.xml Priority Legend Low Medium High
74 HTTP/1.1 HTTP/2 Multiple TCP connections to a host Only one TCP connection Head-of-line blocking Fully multiplexed FIFO restrictions Requests have priorities
75 HTTP/1.1 HTTP/2 Multiple TCP connections to a host Only one TCP connection Head-of-line blocking Fully multiplexed FIFO restrictions Requests have priorities Textual protocol overhead Binary
76 HTTP/1.1 HTTP/2 Multiple TCP connections to a host Only one TCP connection Head-of-line blocking Fully multiplexed FIFO restrictions Requests have priorities Textual protocol overhead Binary No header compression Header compression (HPACK)
77 HTTP/2 Header Compression HPACK Static Table Index Header Name Header Value 1 :authority 2 :method GET 3 :method POST 4 :path / 5 :path /index.html 6 :scheme http 7 :scheme https 8 :status :status accept-charset 16 accept-encoding gzip, deflate 17 accept-language 57 transfer-encoding 58 user-agent 59 vary 60 via 61 www-authenticate Index Header Name Header Value - Dynamic Table
78 HTTP/2 Header Compression HPACK Static Table Index Header Name Header Value 1 :authority 2 :method GET 3 :method POST 4 :path / 5 :path /index.html 6 :scheme http 7 :scheme https 8 :status :status accept-charset 16 accept-encoding gzip, deflate 17 accept-language 57 transfer-encoding 58 user-agent 59 vary 60 via 61 www-authenticate Index Header Name Header Value - Dynamic Table
79 HTTP/2 Header Compression HPACK Static Table Index Header Name Header Value 1 :authority 2 :method GET 3 :method POST 4 :path / 5 :path /index.html 6 :scheme http 7 :scheme https 8 :status :status accept-charset 16 accept-encoding gzip, deflate 17 accept-language 57 transfer-encoding 58 user-agent 59 vary 60 via 61 www-authenticate Dynamic Table Index Header Name Header Value - HTTP/1.1 Request: GET / HTTP/1.1\r\n Host: Connection: Keep-Alive\r\n\r\n
80 HTTP/2 Header Compression HPACK Static Table Index Header Name Header Value 1 :authority 2 :method GET 3 :method POST 4 :path / 5 :path /index.html 6 :scheme http 7 :scheme https 8 :status :status accept-charset 16 accept-encoding gzip, deflate 17 accept-language 57 transfer-encoding 58 user-agent 59 vary 60 via 61 www-authenticate Dynamic Table Index Header Name Header Value - HTTP/1.1 Request: GET / HTTP/1.1\r\n Host: Connection: Keep-Alive\r\n\r\n HTTP/2 Representation: :method: GET :scheme: https :path: / :authority:
81 HTTP/2 Header Compression HPACK Static Table Index Header Name Header Value 1 :authority 2 :method GET 3 :method POST 4 :path / 5 :path /index.html 6 :scheme http 7 :scheme https 8 :status :status accept-charset 16 accept-encoding gzip, deflate 17 accept-language 57 transfer-encoding 58 user-agent 59 vary 60 via 61 www-authenticate Dynamic Table Index Header Name Header Value - HTTP/1.1 Request: GET / HTTP/1.1\r\n Host: Connection: Keep-Alive\r\n\r\n HTTP/2 Representation: :method: GET :scheme: https :path: / :authority:
82 HTTP/2 Header Compression HPACK Static Table Index Header Name Header Value 1 :authority 2 :method GET 3 :method POST 4 :path / 5 :path /index.html 6 :scheme http 7 :scheme https 8 :status :status accept-charset 16 accept-encoding gzip, deflate 17 accept-language 57 transfer-encoding 58 user-agent 59 vary 60 via 61 www-authenticate Dynamic Table Index Header Name Header Value - HTTP/1.1 Request: GET / HTTP/1.1\r\n Host: Connection: Keep-Alive\r\n\r\n HTTP/2 Representation: :method: GET :scheme: https :path: / :authority:
83 HTTP/2 Header Compression HPACK Static Table Index Header Name Header Value 1 :authority 2 :method GET 3 :method POST 4 :path / 5 :path /index.html 6 :scheme http 7 :scheme https 8 :status :status accept-charset 16 accept-encoding gzip, deflate 17 accept-language 57 transfer-encoding 58 user-agent 59 vary 60 via 61 www-authenticate Dynamic Table Index Header Name Header Value - HTTP/1.1 Request: GET / HTTP/1.1\r\n Host: Connection: Keep-Alive\r\n\r\n HTTP/2 Representation: :method: GET :scheme: https :path: / :authority:
84 HTTP/2 Header Compression HPACK Static Table Index Header Name Header Value 1 :authority 2 :method GET 3 :method POST 4 :path / 5 :path /index.html 6 :scheme http 7 :scheme https 8 :status :status accept-charset 16 accept-encoding gzip, deflate 17 accept-language 57 transfer-encoding 58 user-agent 59 vary 60 via 61 www-authenticate Dynamic Table Index Header Name Header Value - HTTP/1.1 Request: GET / HTTP/1.1\r\n Host: Connection: Keep-Alive\r\n\r\n HTTP/2 Representation: :method: GET :scheme: https :path: / :authority:
85 HTTP/2 Header Compression HPACK Static Table Index Header Name Header Value 1 :authority 2 :method GET 3 :method POST 4 :path / 5 :path /index.html 6 :scheme http 7 :scheme https 8 :status :status accept-charset 16 accept-encoding gzip, deflate 17 accept-language 57 transfer-encoding 58 user-agent 59 vary 60 via 61 www-authenticate Index Header Name Header Value - HTTP/1.1 Request: Dynamic Table GET / HTTP/1.1\r\n Host: Connection: Keep-Alive\r\n\r\n HTTP/2 Representation: :method: GET :scheme: https :path: / :authority:
86 HTTP/2 Header Compression HPACK Static Table Index Header Name Header Value 1 :authority 2 :method GET 3 :method POST 4 :path / 5 :path /index.html 6 :scheme http 7 :scheme https 8 :status :status accept-charset 16 accept-encoding gzip, deflate 17 accept-language 57 transfer-encoding 58 user-agent 59 vary 60 via 61 www-authenticate Index Header Name Header Value - HTTP/1.1 Request: Dynamic Table GET / HTTP/1.1\r\n Host: Connection: Keep-Alive\r\n\r\n HTTP/2 Representation: :method: GET :scheme: https :path: / :authority:
87 HTTP/2 Header Compression HPACK Static Table Index Header Name Header Value 1 :authority 2 :method GET 3 :method POST 4 :path / 5 :path /index.html 6 :scheme http 7 :scheme https 8 :status :status accept-charset 16 accept-encoding gzip, deflate 17 accept-language 57 transfer-encoding 58 user-agent 59 vary 60 via 61 www-authenticate Dynamic Table Index Header Name Header Value 1 :authority
88 HTTP/2 Header Compression HPACK Static Table Index Header Name Header Value 1 :authority 2 :method GET 3 :method POST 4 :path / 5 :path /index.html 6 :scheme http 7 :scheme https 8 :status :status accept-charset 16 accept-encoding gzip, deflate 17 accept-language 57 transfer-encoding 58 user-agent 59 vary 60 via 61 www-authenticate Dynamic Table Index Header Name Header Value 1 :authority
89 HTTP/2 Header Compression HPACK Static Table Index Header Name Header Value 1 :authority 2 :method GET 3 :method POST 4 :path / 5 :path /index.html 6 :scheme http 7 :scheme https 8 :status :status accept-charset 16 accept-encoding gzip, deflate 17 accept-language 57 transfer-encoding 58 user-agent 59 vary 60 via 61 www-authenticate Dynamic Table Index Header Name Header Value 1 :authority HTTP/1.1 Second request: GET /index.html HTTP/1.1\r\n Host: Connection: Keep-Alive\r\n\r\n
90 HTTP/2 Header Compression HPACK Static Table Index Header Name Header Value 1 :authority 2 :method GET 3 :method POST 4 :path / 5 :path /index.html 6 :scheme http 7 :scheme https 8 :status :status accept-charset 16 accept-encoding gzip, deflate 17 accept-language 57 transfer-encoding 58 user-agent 59 vary 60 via 61 www-authenticate Dynamic Table Index Header Name Header Value 1 :authority HTTP/1.1 Second request: GET /index.html HTTP/1.1\r\n Host: Connection: Keep-Alive\r\n\r\n HTTP/2 Second request: :method: GET :scheme: https :path: /index.html :authority:
91 HTTP/2 Header Compression HPACK Static Table Index Header Name Header Value 1 :authority 2 :method GET 3 :method POST 4 :path / 5 :path /index.html 6 :scheme http 7 :scheme https 8 :status :status accept-charset 16 accept-encoding gzip, deflate 17 accept-language 57 transfer-encoding 58 user-agent 59 vary 60 via 61 www-authenticate Index Header Name Header Value 1 :authority HTTP/1.1 Second request: GET /index.html HTTP/1.1\r\n Host: Connection: Keep-Alive\r\n\r\n HTTP/2 Second request: Dynamic Table
92 HTTP/2 Adoption on the client
93 HTTP/2 Adoption on the client NSURLSession supports HTTP/2 protocol automatically
94 HTTP/2 Adoption on the client NSURLSession supports HTTP/2 protocol automatically No source code changes needed
95 HTTP/2 Adoption on the client NSURLSession supports HTTP/2 protocol automatically No source code changes needed let sessionconfig = NSURLSessionConfiguration.defaultSessionConfiguration() let session = NSURLSession(configuration: sessionconfig) let url = NSURL(string: " let task = session.datataskwithurl(url) { (data: NSData?, response: NSURLResponse?, error: NSError?) in... } task?.resume()
96 You Only Need an HTTP/2 Server
97 HTTP/2 in NSURLSession Compatibility Backward compatible with HTTP/1.1 servers Encrypted connection only HTTP/2 server requires ALPN or NPN support
98 HTTP/2 Today Current adoption HomeKit Remote Access via icloud Services provided by Google and Twitter Open source web servers Content Delivery Network providers
99 HTTP/2 At a glance HTTP/2 is available in WWDC seed today Available in NSURLSession Enabled in Safari on OS X and ios 9
100 NSURLSession on watchos Dan Vinegrad Software Engineer
101 NSURLSession on watchos Fully supported for HTTP(S) Uses best available connectivity (iphone or WiFi)
102 NSURLSession on watchos Fully supported for HTTP(S) Uses best available connectivity (iphone or WiFi) It s Magic
103 NSURLSession on watchos Best practices
104 NSURLSession on watchos Best practices Download the minimal assets required Small screen Limited bandwidth
105 NSURLSession on watchos Best practices Download the minimal assets required Small screen Limited bandwidth Apps will only run for a very short time Send small amounts of data Use background uploads/downloads for larger content
106 API Changes
107 NSURLConnection
108 NSURLConnection Deprecated in OS X and ios 9.0 Not going away, apps using it will still work New features will be added to NSURLSession Not supported on watchos Switching to NSURLSession is easy
109 Switching to NSURLSession let queue: NSOperationQueue =... let url = NSURL(string: " let request = NSURLRequest(URL: url) NSURLConnection.sendAsynchronousRequest(request, queue: queue) { (response: NSURLResponse?, data: NSData?, error: NSError?) in... }
110 Switching to NSURLSession let queue: NSOperationQueue =... let url = NSURL(string: " let request = NSURLRequest(URL: url) NSURLConnection.sendAsynchronousRequest(request, queue: queue) { (response: NSURLResponse?, data: NSData?, error: NSError?) in... } let task = NSURLSession.sharedSession().dataTaskWithRequest(request) { (data: NSData?, response: NSURLResponse?, error: NSError?) in... } task?.resume()
111 New NSURLSession API
112 Sharing Cookies Between Apps and Extensions Apps and their extensions have different cookie storages by default Can use application groups to get a shared data container OS X and ios 9 introduce new API to create a shared cookie storage
113 New NSHTTPCookieStorage API let ident = "group.mycompany.mygroupname" let cookiestorage = NSHTTPCookieStorage.sharedCookieStorageForGroupContainerIdentifier( identifier: ident) let config = NSURLSessionConfiguration.defaultSessionConfiguration() config.httpcookiestorage = cookiestorage let session = NSURLSession(configuration: config)
114 NSURLSessionStreamTask TCP/IP networking
115 NSURLSessionStreamTask TCP/IP networking Sometimes need a protocol other than HTTP(S)
116 NSURLSessionStreamTask TCP/IP networking Sometimes need a protocol other than HTTP(S) Advantages over NSInputStream / NSOutputStream Asynchronous read/write interface Can automatically get through HTTP proxies New API goodies
117 NSURLSessionStreamTask TCP/IP networking Sometimes need a protocol other than HTTP(S) Advantages over NSInputStream / NSOutputStream Asynchronous read/write interface Can automatically get through HTTP proxies New API goodies Legacy NSStream support
118 NSURLSessionStreamTask TCP/IP networking
119 NSURLSessionStreamTask TCP/IP networking Supports TCP/IP connections: Hostname and port NSNetService resolution
120 NSURLSessionStreamTask TCP/IP networking Supports TCP/IP connections: Hostname and port NSNetService resolution Uses existing NSURLSession configuration and session delegates
121 NSURLSessionStreamTask TCP/IP networking Supports TCP/IP connections: Hostname and port NSNetService resolution Uses existing NSURLSession configuration and session delegates Secure TLS connections supported Even after connected!
122 NSURLSessionStreamTask Asynchronous read let task = NSURLSession.sharedSession().streamTaskWithHostName("chat.example.com", port: 5555)! task.resume() task.readdataofminlength(16384, maxlength:65536, timeout: 30.0) { (data: NSData?, eof: Bool, error: NSError?) in... }
123 NSURLSessionStreamTask Asynchronous write let task = NSURLSession.sharedSession().streamTaskWithHostName("chat.example.com", port: 5555)! task.resume() let data: NSData =... task.writedata(data, timeout: 30.0) { (error: NSError?) in... }
124 NSURLSessionStreamTask Enabling TLS let task = NSURLSession.sharedSession().streamTaskWithHostName("chat.example.com", port: 5555)! task.startsecureconnection() task.resume() let data: NSData =... task.writedata(data, timeout: 30.0) { (error: NSError?) in... }
125 NSURLSessionStreamTask Conversion to NSStreams
126 NSURLSessionStreamTask Conversion to NSStreams Some existing APIs consume NSStream objects
127 NSURLSessionStreamTask Conversion to NSStreams Some existing APIs consume NSStream objects Pending reads/writes complete before NSStreams are produced
128 NSURLSessionStreamTask Conversion to NSStreams Some existing APIs consume NSStream objects Pending reads/writes complete before NSStreams are produced Detaches the task from the session
129 NSURLSessionStreamTask NSStream support let streamtask: NSURLSessionStreamTask = streamtask.capturestreams()
130 NSURLSessionStreamTask NSStream support func URLSession(session: NSURLSession,streamTask: NSURLSessionStreamTask, didbecomeinputstream inputstream: NSInputStream, outputstream: NSOutputStream) { // Can pass inputstream / outputstream to APIs that consume NSStreams }
131 NSURLSessionStreamTask Other (informational) delegate methods optional func URLSession(session: NSURLSession, betterroutediscoveredforstreamtask streamtask: NSURLSessionStreamTask)
132 NSURLSessionStreamTask Other (informational) delegate methods optional func URLSession(session: NSURLSession, betterroutediscoveredforstreamtask streamtask: NSURLSessionStreamTask) optional func URLSession(session: NSURLSession, readclosedforstreamtask streamtask: NSURLSessionStreamTask) optional func URLSession(session: NSURLSession, writeclosedforstreamtask streamtask: NSURLSessionStreamTask)
133 NSURLSessionStreamTask DataTask conversion
134 NSURLSessionStreamTask DataTask conversion NSURLSessionDataTask may be converted to a stream task Use NSURLSession to get through HTTP proxies
135 NSURLSessionStreamTask DataTask conversion NSURLSessionDataTask may be converted to a stream task Use NSURLSession to get through HTTP proxies Conversion can occur when response is received
136 NSURLSessionStreamTask DataTask conversion func URLSession(session: NSURLSession, datatask: NSURLSessionDataTask, didreceiveresponse response: NSURLResponse, completionhandler: (NSURLSessionResponseDisposition) -> Void) { } completionhandler(.becomestream) func URLSession(session: NSURLSession, datatask: NSURLSessionDataTask, didbecomestreamtask streamtask: NSURLSessionStreamTask) { }
137 Summary App Transport Security HTTP/2 support in NSURLSession NSURLSession on watchos NSURLConnection deprecation New API Group container cookie storages NSURLSessionStreamTask
138 More Information Documentation Developer Resources Technical Support Apple Developer Forums Developer Technical Support General Inquiries Paul Danbold, Core OS Evangelist
139 Related Sessions Security and Your Apps Mission Tuesday 4:30PM Introducing Watch Connectivity Pacific Heights Thursday 11:00AM Your App and Next Generation Networks Mission Friday 11:00AM
140 Related Labs Networking Lab Frameworks Lab E Thursday 10:00AM Networking Lab Frameworks Lab B Friday 1:30PM
141
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