c++ - How to read my socket messages -

i reading variable bytes messages sockets in c. there problem when byte in message \0. split in 2 parts , first half sent. there receiving problem on client side well.

please suggest format, can use.

one solution, have sent size of message first , send rest of message. solve problem processing becomes complex.

i looking other cleaner solutions ?

/**     send data connected host  */ bool send_data(const char* data) {     //send data     if (sendto(sock, data, strlen(data), 0,             (const struct sockaddr *) &server, length) < 0) {         perror("send failed ");         return false;     }     std::cout << "data sent: length=" << strlen(data) << " \n";      char str[inet_addrstrlen];     inet_ntop(af_inet, &(server.sin_addr), str, inet_addrstrlen);      std::cerr << "server.sin_addr=" << str << std::endl;      return true; }  /**     receive data connected host  */ void receive(char * buffer, size_t size) {      //receive reply server     if (recvfrom(sock, buffer, size, 0, (struct sockaddr *) &from, (socklen_t*) & length) < 0) {         puts("recv failed");     }      char str[inet_addrstrlen];     inet_ntop(af_inet, &(from.sin_addr), str, inet_addrstrlen);      std::cerr << "from.sin_addr=" << str << std::endl;  } 

the data sending integers converted casted char *. integers small, there upper bytes 00000000. hence problem.

i'll assume have access both server , client code.

you said know size of message, prepare message before sending it, looking \0 character , replacing replacing unique byte sequence identify on client side, replacing original character.