wxWidgets: Client connects to the server, but the server does not recognize - c

Question

I'm creating (at the time, to learn how) two applications console: a server and a client.
The client can connect to the server. If the server is not available, the application terminates with error.
The server waits make a connection, on line socketServer->Accept(1);. When the client connects, the code continues.. The problem is that the "if" following (if (socketServer->IsConnected()) {) evaluates to false.
Full source
Client
#include <wx/wxprec.h>
#include <wx/cmdline.h>
#include <wx/socket.h>
#include <wx/app.h>
#ifndef WX_PRECOMP
#include <wx/wx.h>
#endif
static const wxCmdLineEntryDesc cmdLineDesc[] = {
{ wxCMD_LINE_SWITCH, "h", "help", "show this help message",
wxCMD_LINE_VAL_NONE, wxCMD_LINE_OPTION_HELP },
{ wxCMD_LINE_OPTION, "ip", NULL, "set ip; the default values is 127.0.0.1", wxCMD_LINE_VAL_STRING, wxCMD_LINE_PARAM_OPTIONAL },
{ wxCMD_LINE_OPTION, "p", "port", "set port; the default values is 3000", wxCMD_LINE_VAL_STRING, wxCMD_LINE_PARAM_OPTIONAL },
{ wxCMD_LINE_NONE }
};
int main(int argc, char **argv) {
// Startup
wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "program");
wxInitializer initializer;
if (!initializer) {
fprintf(stderr, "Failed to initialize the wxWidgets library, aborting.\n");
return -1;
}
// Default variables
wxString ip = "127.0.0.1";
wxString port = "3000";
// Parse
wxCmdLineParser parser(cmdLineDesc, argc, argv);
switch (parser.Parse()) {
case -1:
return 0;
break;
case 0:
parser.Found("ip", &ip);
parser.Found("p", &port);
break;
default:
break;
}
// Socket
wxPrintf("Creating socket...\n");
wxSocketClient *socketClient = new wxSocketClient(wxSOCKET_NONE);
wxPrintf("Addressing...\n");
wxPrintf("Usando ip %s\n", ip);
wxIPV4address addr;
if (!addr.Hostname(ip)) {
wxPrintf("Could not set hostname !\n");
return 1;
}
wxPrintf("Usando porta %s\n", port);
if (!addr.Service(port)) {
wxPrintf("Could not set service !\n");
return 1;
}
wxPrintf("Trying to make connection...\n");
if (socketClient->Connect(addr, true)) {
wxPrintf("Success\n");
} else {
wxPrintf("Error!\n");
return 1;
}
// Tell the server which test we are running
wxPrintf("Sending...\n");
unsigned char c = 0xDE;
socketClient->Write(&c, 1);
// This test also is similar to the first one but it sends a
// large buffer so that wxSocket is actually forced to split
// it into pieces and take care of sending everything before
// returning.
socketClient->SetFlags(wxSOCKET_WAITALL);
// Note that len is in kbytes here!
const unsigned char len = 32;
wxCharBuffer buf1(len * 1024);
for (size_t i = 0; i < len * 1024; i++)
buf1.data()[i] = (char) (i % 256);
socketClient->Write(&len, 1);
socketClient->Write(buf1, len * 1024);
wxPrintf("End!\n");
while (1) {
}
return 0;
}
Server
#include <wx/wxprec.h>
#include <wx/cmdline.h>
#include <wx/socket.h>
#include <wx/app.h>
#ifndef WX_PRECOMP
#include <wx/wx.h>
#endif
static const wxCmdLineEntryDesc cmdLineDesc[] = {
{ wxCMD_LINE_SWITCH, "h", "help", "show this help message",
wxCMD_LINE_VAL_NONE, wxCMD_LINE_OPTION_HELP},
{ wxCMD_LINE_SWITCH, "d", "dummy", "a dummy switch"},
// ... your other command line options here...
{ wxCMD_LINE_NONE}
};
int main(int argc, char **argv) {
// Startup
wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "program");
wxInitializer initializer;
if (!initializer) {
fprintf(stderr, "Failed to initialize the wxWidgets library, aborting.\n");
return -1;
}
// Creat socket
wxPrintf("Criando socket...\n");
wxSocketServer *socketServer;
wxIPV4address addr;
if (!addr.Hostname("127.0.0.1")) {
wxPrintf("Could not set hostname !\n");
return 1;
}
if (!addr.Service(3000)) {
wxPrintf("Could not set service !\n");
return 1;
}
socketServer = new wxSocketServer(addr);
if (!socketServer->IsOk()) {
wxPrintf("Could not listen at the specified port !\n");
return 1;
}
// Efetuar conexao
wxPrintf("Waiting for connection...\n");
socketServer->Accept(1);
if (socketServer->IsConnected()) {
wxPrintf("Success\n");
} else {
wxPrintf("Not connected\n");
}
while (1) {
}
return 0;
}

Answer 1

After hours studying and trying, I solved the problem.
wxPrintf("Waiting for connection...\n");
wxSocketBase socketTest;
socketServer->AcceptWith(socketTest, true);
if (socketTest.IsConnected()) {
wxPrintf("Success\n");
} else {
wxPrintf("Not connected\n");
}
In the manual is written a detail that had not understood:
Accepts an incoming connection request, and creates a new wxSocketBase
object which represents the server-side of the connection.