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ClientServerProject
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Update stuff :)

This commit is contained in:
Substitute 2021-02-10 16:32:59 -05:00
parent 9f1f324511
commit dd98502646
15 changed files with 201 additions and 80 deletions
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# Default ignored files
/shelf/
/workspace.xml
# Datasource local storage ignored files
/dataSources/
/dataSources.local.xml
# Editor-based HTTP Client requests
/httpRequests/

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Project_1

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.idea/ClientServerProject.iml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<module classpath="CMake" type="CPP_MODULE" version="4" />

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<component name="InspectionProjectProfileManager">
<profile version="1.0">
<option name="myName" value="Project Default" />
<inspection_tool class="EndlessLoop" enabled="false" level="WARNING" enabled_by_default="false" />
</profile>
</component>

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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="CMakeWorkspace" PROJECT_DIR="$PROJECT_DIR$" />
</project>

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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ProjectModuleManager">
<modules>
<module fileurl="file://$PROJECT_DIR$/.idea/ClientServerProject.iml" filepath="$PROJECT_DIR$/.idea/ClientServerProject.iml" />
</modules>
</component>
</project>

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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="VcsDirectoryMappings">
<mapping directory="$PROJECT_DIR$" vcs="Git" />
</component>
</project>

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CMakeLists.txt
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@ -3,4 +3,4 @@ project(Project_1)
set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD 17)
add_executable(Project_1 main.cpp sockets.cpp switch_expression.h) add_executable(Project_1 main.cpp sockets.cpp switch_expression.h helpers/terminal.h)

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cmake-build-debug/Project_1.cbp
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<Option virtualFolders="CMake Files\;"/> <Option virtualFolders="CMake Files\;"/>
<Build> <Build>
<Target title="all"> <Target title="all">
<Option working_dir="/Users/riley/CLionProjects/UNF/Networks/Project 1/cmake-build-debug"/> <Option working_dir="/Users/riley/ClientServerProject/cmake-build-debug"/>
<Option type="4"/> <Option type="4"/>
<MakeCommands> <MakeCommands>
<Build command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 all"/> <Build command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 all"/>
<CompileFile command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 &quot;$file&quot;"/> <CompileFile command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 &quot;$file&quot;"/>
<Clean command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/> <Clean command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/>
<DistClean command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/> <DistClean command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/>
</MakeCommands> </MakeCommands>
</Target> </Target>
<Target title="rebuild_cache"> <Target title="rebuild_cache">
<Option working_dir="/Users/riley/CLionProjects/UNF/Networks/Project 1/cmake-build-debug"/> <Option working_dir="/Users/riley/ClientServerProject/cmake-build-debug"/>
<Option type="4"/> <Option type="4"/>
<MakeCommands> <MakeCommands>
<Build command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 rebuild_cache"/> <Build command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 rebuild_cache"/>
<CompileFile command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 &quot;$file&quot;"/> <CompileFile command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 &quot;$file&quot;"/>
<Clean command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/> <Clean command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/>
<DistClean command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/> <DistClean command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/>
</MakeCommands> </MakeCommands>
</Target> </Target>
<Target title="edit_cache"> <Target title="edit_cache">
<Option working_dir="/Users/riley/CLionProjects/UNF/Networks/Project 1/cmake-build-debug"/> <Option working_dir="/Users/riley/ClientServerProject/cmake-build-debug"/>
<Option type="4"/> <Option type="4"/>
<MakeCommands> <MakeCommands>
<Build command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 edit_cache"/> <Build command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 edit_cache"/>
<CompileFile command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 &quot;$file&quot;"/> <CompileFile command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 &quot;$file&quot;"/>
<Clean command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/> <Clean command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/>
<DistClean command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/> <DistClean command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/>
</MakeCommands> </MakeCommands>
</Target> </Target>
<Target title="Project_1"> <Target title="Project_1">
<Option output="/Users/riley/CLionProjects/UNF/Networks/Project 1/cmake-build-debug/Project_1" prefix_auto="0" extension_auto="0"/> <Option output="/Users/riley/ClientServerProject/cmake-build-debug/Project_1" prefix_auto="0" extension_auto="0"/>
<Option working_dir="/Users/riley/CLionProjects/UNF/Networks/Project 1/cmake-build-debug"/> <Option working_dir="/Users/riley/ClientServerProject/cmake-build-debug"/>
<Option object_output="./"/> <Option object_output="./"/>
<Option type="1"/> <Option type="1"/>
<Option compiler="gcc"/> <Option compiler="gcc"/>
<Compiler> <Compiler>
<Add directory="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1"/> <Add directory="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1"/>
<Add directory="/usr/local/include"/>
<Add directory="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/12.0.0/include"/> <Add directory="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/12.0.0/include"/>
<Add directory="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include"/> <Add directory="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include"/>
<Add directory="/System/Library/Frameworks"/> <Add directory="/System/Library/Frameworks"/>
<Add directory="/Library/Frameworks"/> <Add directory="/Library/Frameworks"/>
</Compiler> </Compiler>
<MakeCommands> <MakeCommands>
<Build command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 Project_1"/> <Build command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 Project_1"/>
<CompileFile command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 &quot;$file&quot;"/> <CompileFile command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 &quot;$file&quot;"/>
<Clean command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/> <Clean command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/>
<DistClean command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/> <DistClean command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/>
</MakeCommands> </MakeCommands>
</Target> </Target>
<Target title="Project_1/fast"> <Target title="Project_1/fast">
<Option output="/Users/riley/CLionProjects/UNF/Networks/Project 1/cmake-build-debug/Project_1" prefix_auto="0" extension_auto="0"/> <Option output="/Users/riley/ClientServerProject/cmake-build-debug/Project_1" prefix_auto="0" extension_auto="0"/>
<Option working_dir="/Users/riley/CLionProjects/UNF/Networks/Project 1/cmake-build-debug"/> <Option working_dir="/Users/riley/ClientServerProject/cmake-build-debug"/>
<Option object_output="./"/> <Option object_output="./"/>
<Option type="1"/> <Option type="1"/>
<Option compiler="gcc"/> <Option compiler="gcc"/>
<Compiler> <Compiler>
<Add directory="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1"/> <Add directory="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1"/>
<Add directory="/usr/local/include"/>
<Add directory="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/12.0.0/include"/> <Add directory="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/12.0.0/include"/>
<Add directory="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include"/> <Add directory="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include"/>
<Add directory="/System/Library/Frameworks"/> <Add directory="/System/Library/Frameworks"/>
<Add directory="/Library/Frameworks"/> <Add directory="/Library/Frameworks"/>
</Compiler> </Compiler>
<MakeCommands> <MakeCommands>
<Build command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 Project_1/fast"/> <Build command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 Project_1/fast"/>
<CompileFile command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 &quot;$file&quot;"/> <CompileFile command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 &quot;$file&quot;"/>
<Clean command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/> <Clean command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/>
<DistClean command="/usr/bin/make -j8 -f &quot;/Users/riley/CLionProjects/UNF/Networks/Project\ 1/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/> <DistClean command="/usr/bin/make -j8 -f &quot;/Users/riley/ClientServerProject/cmake-build-debug/Makefile&quot; VERBOSE=1 clean"/>
</MakeCommands> </MakeCommands>
</Target> </Target>
</Build> </Build>
<Unit filename="/Users/riley/CLionProjects/UNF/Networks/Project 1/main.cpp"> <Unit filename="/Users/riley/ClientServerProject/helpers/terminal.h">
<Option target="Project_1"/> <Option target="Project_1"/>
</Unit> </Unit>
<Unit filename="/Users/riley/CLionProjects/UNF/Networks/Project 1/sockets.cpp"> <Unit filename="/Users/riley/ClientServerProject/main.cpp">
<Option target="Project_1"/> <Option target="Project_1"/>
</Unit> </Unit>
<Unit filename="/Users/riley/CLionProjects/UNF/Networks/Project 1/sockets.h"> <Unit filename="/Users/riley/ClientServerProject/sockets.cpp">
<Option target="Project_1"/> <Option target="Project_1"/>
</Unit> </Unit>
<Unit filename="/Users/riley/CLionProjects/UNF/Networks/Project 1/switch_expression.h"> <Unit filename="/Users/riley/ClientServerProject/sockets.h">
<Option target="Project_1"/> <Option target="Project_1"/>
</Unit> </Unit>
<Unit filename="/Users/riley/CLionProjects/UNF/Networks/Project 1/CMakeLists.txt"> <Unit filename="/Users/riley/ClientServerProject/switch_expression.h">
<Option target="Project_1"/>
</Unit>
<Unit filename="/Users/riley/ClientServerProject/CMakeLists.txt">
<Option virtualFolder="CMake Files\"/> <Option virtualFolder="CMake Files\"/>
</Unit> </Unit>
</Project> </Project>

16
helpers/terminal.h Normal file
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@ -0,0 +1,16 @@
#pragma once
inline auto terminal_size()
{
struct winsize result{};
ioctl(STDOUT_FILENO, TIOCGWINSZ, &result);
return std::make_tuple(result.ws_col, result.ws_row);
}
template<class CharT, class Traits>
std::basic_ostream<CharT,Traits>& hl( std::basic_ostream<CharT, Traits>& os)
{
auto [width, height] = terminal_size();
os << std::setfill('-') << std::setw(width) << "\n" << std::setfill(' ') << std::setw(0);
return os;
}

124
main.cpp
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@ -4,10 +4,12 @@
#include "sockets.h" #include "sockets.h"
#include "user_input.h" #include "user_input.h"
#include <chrono> #include <chrono>
#include <iomanip>
#include "server.h" #include "server.h"
#include "osyncstream.h" #include "osyncstream.h"
#include "switch_expression.h" #include "switch_expression.h"
#include <sys/ioctl.h>
#include "helpers/terminal.h"
/* /*
* *
auto server(const addrinfo_up& address) noexcept -> void auto server(const addrinfo_up& address) noexcept -> void
@ -92,7 +94,7 @@ auto client(const addrinfo_up& address) noexcept -> void
* *
*/ */
bool onClientConnected(networked& client) auto onClientConnected(networked& client)
{ {
sscout << "Accepted Client on Server.\n"; sscout << "Accepted Client on Server.\n";
@ -104,55 +106,103 @@ bool onClientConnected(networked& client)
} }
auto onClientMessaged(networked& client, std::string& message) auto onClientMessaged(networked& client, std::string& message)
{ {
sscout << "message was " << message << "\n"; try
{
client.send_message("thanks for the message!"); int operation = std::stoi(message);
sscout << "OPCode is " << operation << ".\n";
client.send_message("thanks for the message!");
}catch(std::invalid_argument& invalid_number)
{
sscout << "Invalid OPCode, Ignored.\n";
}
client.disconnect(); client.disconnect();
return true; return true;
} }
inline auto resolve_selection(const int selection) -> std::string auto get_ip_port(int mode)
{ {
if (selection == 1) std::string ipaddress{};
return "Server"; std::uint16_t port{};
else if (selection == 2) if (mode == 1)
return "Client"; ipaddress = "0.0.0.0";
return ""; else
ipaddress = get_input<std::string>("Enter IP: ");
port = get_input<std::uint16_t>("Enter Port:");
return std::make_tuple(mode == 1 ? "Server" : mode == 2 ? "Client" : "Unknown", ipaddress, port);
} }
auto execute_as_client(std::string ipaddress, std::uint16_t port)
{
auto num_clients = get_input<int>("Enter number of clients. (1-25)", "Invalid Amount", math::is_between<0, 26>);
auto operation = get_input<int>("Pick Command\n\t1. Date", "Invalid Selection", math::is_between<0, 2>);
auto internal_tracker = 0;
std::vector<std::thread> threads{};
threads.reserve(num_clients);
auto [width, _] = terminal_size();
for(int i = 0; i < num_clients; ++i)
{
threads.emplace_back(std::thread([&, i]()
{
client net_client{};
auto start = std::chrono::high_resolution_clock::now();
net_client.message_received += [=, &internal_tracker](std::string& message)
{
auto end = std::chrono::high_resolution_clock::now();
std::chrono::duration<double, std::milli> elapsed = end-start;
sscout << "message for " << internal_tracker << math::numerical_suffix(internal_tracker++) << " of which is " << message << ".\n"
<< "Round Trip Was " << elapsed.count() << " ms\n"
<< hl;
return true;
};
auto res = net_client.connect(ipaddress, port);
if (res.joinable())
{
net_client.send_message(std::to_string(operation));
res.join();
}
}));
}
sscout << "All clients connected.\n";
for(auto&& thread : threads)
thread.join();
sscout << "Finished!\n";
}
int main() int main()
{ {
net::prologue(); net::prologue();
const auto mode = get_input<int>("Select Mode\n\t1. Server\n\t2. Client\n>:","Invalid Choice!",math::is_between<0,3>); const auto mode = get_input<int>("Select Mode\n\t1. Server\n\t2. Client\n>:","Invalid Choice!",math::is_between<0,3>);
while (true) while (true)
{ {
std::string ipaddress{}; auto [prefix, ipaddress, port] = get_ip_port(mode);
std::uint16_t port{}; sscout << prefix << " selected, ip/port is " << ipaddress << "/" << port << ".\n";
if (mode == 1) if (mode == 2) {
ipaddress = "0.0.0.0"; execute_as_client(ipaddress, port);
else continue;
ipaddress = get_input<std::string>("Enter IP: "); for (int i = 0; i < 10; ++i) {
port = get_input<std::uint16_t>("Enter Port:"); client net_client{};
sscout << resolve_selection(mode) << " selected, ip/port is " << ipaddress << "/" << port << ".\n"; net_client.message_received += [](std::string &what) {
if (mode == 2) sscout << "GOT " << what << ".\n";
{ return true;
client net_client{}; };
net_client.message_received += [](std::string& what){ auto res = net_client.connect(ipaddress, port);
sscout << "GOT " << what << ".\n"; if (res.joinable()) {
return true; net_client.send_message(std::string("!Hello! from") + std::to_string(i) + "\n");
}; res.join();
if(net_client.connect(ipaddress, port)) } else {
{ sscout << "NO NET\n";
net_client.send_message("!Hello!\n"); }
net_client.send_message("Second Message\n"); net_client.disconnect();
net_client.send_message("Final Message!\n");
while(net_client.is_valid()){}
} }
else }
{ else{
sscout << "NO NET\n"; server net_server{};
}
net_client.disconnect(); net_server.client_connected += onClientConnected;
net_server.message_received += onClientMessaged;
net_server.listen(ipaddress, port).join();
} }
} }

15
server.h
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@ -33,9 +33,8 @@ class client : public networked
while(is_valid()) /* Accept all messages */ while(is_valid()) /* Accept all messages */
{ {
auto message = receive_message(); auto message = receive_message();
if (message.empty() && is_valid()) if (message.empty() && is_valid()) //connection is closed or broken.
{ {
sscout << "Server Connection Lost\n";
disconnect(); disconnect();
break; break;
} }
@ -45,14 +44,14 @@ class client : public networked
public: public:
event<std::string&> message_received {}; event<std::string&> message_received {};
explicit client() : networked(net::socket(AF_INET, SOCK_STREAM, 0)){} explicit client() : networked(net::socket(AF_INET, SOCK_STREAM, 0)){}
auto connect(const std::string& ip, const port port) -> bool auto connect(const std::string& ip, const port port) -> std::thread
{ {
const auto address = net::getaddrinfo(ip, std::to_string(port)); const auto address = net::getaddrinfo(ip, std::to_string(port));
auto remote_address = net::getaddrinfo(ip, std::to_string(port)); auto remote_address = net::getaddrinfo(ip, std::to_string(port));
if (net::connect(socket, remote_address) < 0) if (net::connect(socket, remote_address) < 0)
return false; return std::thread();
std::thread(&client::accept_message, this).detach(); auto thread = std::thread(&client::accept_message, this);
return true; return thread;
} }
}; };
@ -74,8 +73,8 @@ class server : networked
auto accept_client_message(networked client) -> void //add const later auto accept_client_message(networked client) -> void //add const later
{ {
using namespace std::chrono_literals; //using namespace std::chrono_literals;
std::this_thread::sleep_for(2000ms); //std::this_thread::sleep_for(2000ms);
while(client.is_valid()) /* Accept all messages */ while(client.is_valid()) /* Accept all messages */
{ {
auto message = client.receive_message(); auto message = client.receive_message();

20
user_input.h
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@ -12,6 +12,22 @@ namespace math
{ {
template<auto lb, typeof(lb) ub, std::enable_if_t<std::is_integral<typeof(lb)>::value, bool> = true> template<auto lb, typeof(lb) ub, std::enable_if_t<std::is_integral<typeof(lb)>::value, bool> = true>
constexpr auto is_between(typeof(lb) x) -> bool { return (ub > x) && (x > lb); } constexpr auto is_between(typeof(lb) x) -> bool { return (ub > x) && (x > lb); }
template<auto lb, std::enable_if_t<std::is_integral<typeof(lb)>::value, bool> = true>
constexpr auto is_larger(typeof(lb) x) -> bool { return (x > lb); }
template<auto ub, std::enable_if_t<std::is_integral<typeof(ub)>::value, bool> = true>
constexpr auto is_smaller(typeof(ub) x) -> bool { return (ub > x); }
template<typename T, std::enable_if_t<std::is_integral<typeof(T)>::value, bool> = true>
auto numerical_suffix(T value) -> std::string
{
std::string suffixes[4] = {"th", "st", "nd", "rd"};
value %= 100;
if (math::is_between<11,13>(value))
return "th";
value %= 10;
if (math::is_larger<3>(value))
return "th";
return suffixes[value % 4];
}
} }
template<typename T> template<typename T>
@ -37,6 +53,6 @@ T get_input(const std::string& prompt, const std::string& on_error, std::functio
} }
catch (std::exception&) { return user_input; } /* This should not happen ..... cin/cout are not configured to throw...*/ catch (std::exception&) { return user_input; } /* This should not happen ..... cin/cout are not configured to throw...*/
} }
struct always_true_validator { template<typename T> bool operator()(T) const { return true; }};
template<typename T> template<typename T>
T get_input(const std::string& prompt) { return get_input<T>(prompt, "", [](auto) {return true; }); } T get_input(const std::string& prompt) { return get_input<T>(prompt, "", always_true_validator()); }