tcp-tests projects - 20170122 20151231

This is just a collection of sockets code, tcp and udp, most cross-platform, with no particular purpose other than serve as a tcp/ip example code source, gathered from many sources over the years.

Build

This is a CMake project to generate cross-port build environments like Unix Makefiles, MinGW Makefiles, MSVC, etc...

Unix

$ cd build
$ cmake .. [Options]
$ make

Windows

$ cd build
$ cmake .. [Options]
$ cmake --build . --config Release

Of course the options include setting the generator, if you do not want the default environment... And there is a CMake GUI that can be used instead... and like wise various GUI IDE type builders...

Projects

They are more or less in alphabetic order... and most work to show something...

Crossported WIN32/UNIX

- ebsocket.c ebsocket.h
- nbclient.cxx
- nbserver.cxx
- simp_client.cxx
- simp_server.cxx simp_common.hxx
- udpclient.cxx
- udpclient2.cxx
- udp-recv.cxx
- udp-send.cxx
- udpserver.cxx
- udpserver2.cxx
- unix_client.cxx
- unix_server.cxx

Windows Only

- getlocalip.cpp
- udp-wrecv.cxx
- udp-wsend.cxx
- recvfrom.cxx
- sendto.cxx
- WSAenum.cxx

Not working

- httpget.cxx - not working!

More Details

nbclient/nbserver

A tcp server/client pair, using 'select' in a non-blocking mode

A -? command for help.

recvfrom/sendto

A udp receive from and send to pair. Default recvfrom is INADDR_ANY on port 3333, and sendto is localhost on port 3333

A -? command for help.

simp_client/simp_server

A simple tcp server/client pair.

server def is none, port 5050
	sockfd = socket(AF_INET,socket_type,0); // SOCK_STREAM = tcp
	if (SERROR(sockfd)) {
        	PERROR("ERROR: socket() FAILED!");
	...
	status = bind(sockfd,(struct sockaddr *)&serv_addr,sizeof(serv_addr));
	if (SERROR(status)) {
        	PERROR("ERROR: Can't bind address!");
	...
	status = listen(sockfd,DEF_BACKLOG);
    	if (SERROR(status)) {
        	PERROR("ERROR: listen() FAILED!");
	...
        status = select( (int)highest+1, &ListenSocket, NULL, NULL, &timeout );
        if (SERROR(status)) {
            PERROR("ERROR: 'select' FAILED!");
	... If ListenSocket ...
		newsockfd = accept(sockfd,(struct sockaddr *)&cli_addr,&clilen);
		int res = recv(newsockfd,rd_buf,MAXSTR,0);
    		if (SERROR(res)) {
	... done for a list of tcp client

client def is IP 127.0.0.1, port 5050
	sockfd = (int)socket(AF_INET,socket_type,0);
	if (SERROR(sockfd)) {
	...
        status = connect(sockfd,(struct sockaddr *)&serv_addr,sizeof(serv_addr));
        if (SERROR(status)) {
	... if connected ...
        wlen = send(sockfd,m_data,slen,0);
        if (SERROR(wlen)) {

Note use of MACROS to switch between UNIX/WIN32 implmentations.

udpclient udpclient2 udpserver udpserver2

Experiments in udp server and client

unix_client unix_server

Some unix code scraped from www, but ported it to windows

2020/10/12: Add port and timeout to server...

$ ./unix_server -?
unix_server: usage: [options]
Options:
 --help  (-h or -?) = This help and exit(0)
 --port <port)  (p) = Set server port. (def=3333)
 --time <mins>  (t) = Set listen timeout. (def=6 mins)

 Set up a server listen on INADDR_ANY:port, and accept incoming
 connections, read, and echo messages, for the timeout... simple...

and IP and port to client...

D:\UTILS\tcp-tests\build.x64>release\unix_client -?
unix_client: usage: [options]
Options:
 --help  (-h or -?) = This help and exit(0)
 --ip <address> (i) = Set server ip address. (def=127.0.0.1)
 --port <port) (-p) = Set coomuniation port. (def=3333)

 Create a 'socket', connect to server on IP:port, and offer to send
 messages to the server... simple...

httpget.exe

This was to do a simple GET to http://crossfeed.fgx.ch, and shows the json received, but FAILS.

History

20201012 - small enhancements to unix server, and client.

20151231 - re-named tcp-tests - all SG links removed!

20141118 - 20131015 - 20120705 - fgio root CMakeLists.txt - last fgio_11.zip...

Have FUN!

Geoff.
20201012 - 20170122

; eof