Developer Notes for 
		P4API, the Helix Application Programming Interface for C/C++
		P4, the Helix Command line client 
		P4P, the Helix Proxy 
		P4Broker, the Helix Broker 
			Version 2017.1

Introduction

	This document is contains developer notes for:
		* Helix C/C++ API and other derived APIs and
		* Helix Client (P4)
		* Helix  Proxy (P4P) and
		* Helix  Broker (P4Broker)

        For details about installing and using the Helix C/C++ API,
        refer to the API User's Guide, posted on the Perforce Web site at:

        http://www.perforce.com/perforce/technical.html

Supported Platforms for p4api

	Linux kernel 2.6+ for Intel(x86,x86_64)
	Windows for Intel(ntx86, ntx64)
	Mac OS X 10.5, 10.6, 10.7, 10.8, 10.9, 10.10(x86, x86_64)
	Apple Darwin 9.0 for Intel(x86,x86_64)


SSL Support

	Beginning with the 2017.1 release of the Helix C/C++ API,
	the dependency on OpenSSL is now enforced and the SSL
	stub library has been removed.  Executables linked against
	the P4API libraries must also be linked against real
	OpenSSL libraries: the latest 1.0.2 patch is recommended. 

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   See marks in the notes below:

	* -- requires new p4 client program
	     including all client applications and derived APIs

	** -- requires new p4d server program

	*** -- requires new p4p proxy program

	**** -- requires new p4broker  program
	
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Major new functionality in 2017.1

	#1478710 * **
	    The client must set the 'enableGraph' protocol to indicate
	    that it supports the additional output formats reported by
	    the graph data model.

	#1454418 *
	    The KeepAlive class which works with the Client::SetBreak
	    method can now specify a polling interval time in milliseconds

	#1434004 * **
	    TCP protocol changes to improve performance of long
	    latency connections.  Significantly more data may be
	    transported to or from servers and timely processing
	    of results by clients is important.

Bugs fixed in 2017.1

	#1483947 (Bug #89040) *
	    P4CLIENTPATH and the dvcs related P4INITROOT no longer restrict
	    files from being written into the system temporary directory
	    or the directory given by TEMP or TMP.  To support this,
	    there is a new Client::GetTempPath call.