c++ - Can't connect to remote ip -


i'm trying connect client server. local address (127.0.0.1) works fine, when try use remote address, doesn't work. search thing on internet couldn't find anything.

server side:

bool start_server() {     int = 1;     if(wsastartup(makeword(2,0),&wsadat) != 0)     {          cout << "wsa error!" << endl;          system("pause");          return false;     }     if ( lobyte( wsadat.wversion ) != 2 || hibyte( wsadat.wversion ) != 0 )     {       cout << "bad version of winsocket" << endl;       system("pause");       wsacleanup();       return 0;     }        serwer = socket(af_inet, sock_stream, 0);     if(serwer == invalid_socket)     {         cout << "can't create socketa!" << endl;         system("pause");         wsacleanup();         return 0;     }     int port;     cout << "port input " << endl;     cin >> port;                                             // 13056     sockaddr_in sockaddr;     sockaddr.sin_port =  htons(port);     sockaddr.sin_family = af_inet;     sockaddr.sin_addr.s_addr = inaddr_any;     setsockopt( serwer, sol_socket, so_reuseaddr, ( char * ) &i, sizeof ( ) );     if(bind(serwer,(sockaddr *)(&sockaddr), sizeof(sockaddr)) == socket_error)     {         cout << "couldn't bind socket" << endl;         system("pause");         wsacleanup();         return 0;     }     for(int = 0; < max_clients; i++)     client[i].connected = false;     if(listen(serwer,somaxconn)==socket_error)     {         cout << "listening error!" << endl;         system("pause");         wsacleanup();         return 0;     }     cout << "serwer created!" << endl;     unsigned long b = 0;     ioctlsocket ( serwer, fionbio, &b );     return 1; }

after have accept function on program blocking:

accept(serwer,(sockaddr *)(&current_client->address),&current_client->address_length);

client side:

bool start_client() {     wsadata wsadat;      if(wsastartup(makeword(2,0),&wsadat) != 0)         cout << "wsa error!\n";     if ( lobyte( wsadat.wversion ) != 2 || hibyte( wsadat.wversion ) != 0 )     {         cout << "wrong version of winsocket\n";         wsacleanup();                     return false;     }      socket klient;      klient = socket(af_inet, sock_stream, 0);     if(klient == invalid_socket)             {         cout << "can't create socket socketa!\n";         wsacleanup();                     return false;     }     sockaddr_in sockaddr;     sockaddr.sin_port = htons(port);                        // 13056     sockaddr.sin_family = af_inet;     sockaddr.sin_addr.s_un.s_addr = inet_addr("*********");      // remote address     while(connect(klient, (sockaddr *)(&sockaddr), sizeof(sockaddr)) != 0)      {         cout << "trying connect " << wsagetlasterror() << "\n";         sleep(500);     }     cout << "connected!\n"; }

i have added both client , server applications firewall rules , have tried connect them on couple ports. server side listening sure (here on different port):

enter image description here

there nothing wrong code.

not routers , network address translators (nats) support hairpinning, ability connect public ip within private network behind nat.

if nat/router support this, need configure port-forwarding rule on nat/route map incoming tcp traffic on port 14354 (your server listening port) internal ip address of 192.168.0.10. think of router perspective, if sees , incoming connection request on public ip - needs know host on private network forward connection to.


Comments

Post a Comment

Popular posts from this blog

linux - Does gcc have any options to add version info in ELF binary file? -

i mean whether gcc can insert source code version infor elf binary section or similar. not want change source file, add info gcc option in makefile. you can emit version info text file, turn text file object file statically link executable. the first step simple have write code: script or write version info in format plain text file. write makefile rule produce version.o version.txt, using objcopy . you'll have object file 2 useful symbols defined in it: beginning , end of textual version info. add generated object executable, , you'll able access version 2 ways: running strings on binary, or writing code in application print version string (you'll need declare start , end symbols variables in header file).
Read more

javascript - Clean way to programmatically use CSS transitions from JS? -

as title implies, there proper way set initial css properties (or class) , tell browser transition these value? for example ( fiddle ): var el = document.queryselector('div'), st = el.style; st.opacity = 0; st.transition = 'opacity 2s'; st.opacity = 1; this not animate opacity of element in chrome 29/firefox 23. because ( source ): [...] you’ll find if apply both sets of properties, 1 after other, browser tries optimize property changes, ignoring initial properties , preventing transition. behind scenes, browsers batch property changes before painting which, while speeding rendering, can have adverse affects. the solution force redraw between applying 2 sets of properties. simple method of doing accessing dom element’s offsetheight property [...] in fact, hack work in current chrome/firefox versions. updated code ( fiddle - click run after opening fiddle run animation again): var el = document.queryselector('div'...
Read more

android - send complex objects as post php java -

is possible send contact numbers via post php class inside eclipse ? or post limited primitive types , have find work arounds send them string ? i propose: send them json in post request, befor start, have @ gson project , keep in mind set content application -> json. luck
Read more