From 32e25cbca210a359b09768537b6f443fe90a3070 Mon Sep 17 00:00:00 2001 From: Romain Forlot Date: Tue, 20 Jun 2017 10:24:05 +0000 Subject: Separation Generator to a dedicated repo Change-Id: Id94831651c3266861435272a6e36c7884bef2c45 Signed-off-by: Romain Forlot --- libs/nanopb/examples/network_server/README.txt | 60 ++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 libs/nanopb/examples/network_server/README.txt (limited to 'libs/nanopb/examples/network_server/README.txt') diff --git a/libs/nanopb/examples/network_server/README.txt b/libs/nanopb/examples/network_server/README.txt new file mode 100644 index 00000000..7bdcbed5 --- /dev/null +++ b/libs/nanopb/examples/network_server/README.txt @@ -0,0 +1,60 @@ +Nanopb example "network_server" +=============================== + +This example demonstrates the use of nanopb to communicate over network +connections. It consists of a server that sends file listings, and of +a client that requests the file list from the server. + +Example usage +------------- + +user@host:~/nanopb/examples/network_server$ make # Build the example +protoc -ofileproto.pb fileproto.proto +python ../../generator/nanopb_generator.py fileproto.pb +Writing to fileproto.pb.h and fileproto.pb.c +cc -ansi -Wall -Werror -I .. -g -O0 -I../.. -o server server.c + ../../pb_decode.c ../../pb_encode.c fileproto.pb.c common.c +cc -ansi -Wall -Werror -I .. -g -O0 -I../.. -o client client.c + ../../pb_decode.c ../../pb_encode.c fileproto.pb.c common.c + +user@host:~/nanopb/examples/network_server$ ./server & # Start the server on background +[1] 24462 + +petteri@oddish:~/nanopb/examples/network_server$ ./client /bin # Request the server to list /bin +Got connection. +Listing directory: /bin +1327119 bzdiff +1327126 bzless +1327147 ps +1327178 ntfsmove +1327271 mv +1327187 mount +1327259 false +1327266 tempfile +1327285 zfgrep +1327165 gzexe +1327204 nc.openbsd +1327260 uname + + +Details of implementation +------------------------- +fileproto.proto contains the portable Google Protocol Buffers protocol definition. +It could be used as-is to implement a server or a client in any other language, for +example Python or Java. + +fileproto.options contains the nanopb-specific options for the protocol file. This +sets the amount of space allocated for file names when decoding messages. + +common.c/h contains functions that allow nanopb to read and write directly from +network socket. This way there is no need to allocate a separate buffer to store +the message. + +server.c contains the code to open a listening socket, to respond to clients and +to list directory contents. + +client.c contains the code to connect to a server, to send a request and to print +the response message. + +The code is implemented using the POSIX socket api, but it should be easy enough +to port into any other socket api, such as lwip. -- cgit 1.2.3-korg