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xCAT Network Boot Agent
b107637008
gPXE is not compliant with the HTTP/1.1 specification (RFC 2616), since it lacks support for "Transfer-Encoding: chunked". gPXE is, however, compliant with the HTTP/1.0 specification (RFC 1945), which does not require "Transfer-Encoding: chunked" to be supported. The only HTTP/1.1 feature that gPXE uses is the "Host:" header, but servers universally accept that one from HTTP/1.0 clients as an optional extension (it is obligatory for HTTP/1.1). gPXE does not, for example, appear to support connection caching. Advertising as a HTTP/1.0 client will typically make the server close the connection immediately upon sending the last data, which is actually beneficial if we aren't going to keep the connection alive anyway. |
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gPXE README File gPXE is an implementation of the PXE specification for network booting, with extensions to allow additional features such as booting via HTTP, iSCSI, and AoE. In generally, gPXE is compatible with the industry-standard PXE specification, and also supports Etherboot .nbi file loading and some additional protocols and features. For more detailed information about gPXE, please visit our project website at: http://etherboot.org/ BUILDING gPXE IMAGE FROM SOURCE If you don't want to install development tools, and have access to the Web, you can get gPXE and Etherboot ROM images made on demand from http://rom-o-matic.net/ If you would like to compile gPXE images from source, here are some tips. We normally compile gPXE images on x86, 32-bit Linux machines. It is possible to also use x86-64 machines. We use gcc compiler options to create 32-bit output. It is important to have the necessary software packages installed. A gcc-based toolchain is required. The following packages (at least) are required: - a gcc tool chain (gcc 3.x or gcc 4.x) - binutils - perl - syslinux - mtools To test your environment, cd to the "src" directory and type: make You should see a lot of output, and when it stops, the "bin" directory should be populated with gPXE images and object files. To learn more about what to build and how to use gPXE, please visit our project website at http://etherboot.org/ , particularly the "howto" section. CONTACTING US Pointers to our project mailing lists are on http://etherboot.org/ Real-time help is often available on IRC on the #etherboot channel of irc.freenode.net.