套接字和telnet出现问题

我一直在学习套接字，我已经创建了一个基本服务器，您可以在其中telnet并键入消息，然后按enter键，消息就会打印在服务器上。

由于是telnet，每次按键都会发送到服务器。因此，我基本上将所有发送的字节都保存在缓冲区中，然后当收到回车（"\r\n"）时，我会丢弃它，并打印出客户端的当前缓冲区。然后我清空客户端缓冲区。

我的问题是，每隔一段时间（我不太确定如何复制它），我发送的第一行数据就会在每个字符上增加一个额外的空间。例如，我将在telnet客户端上键入"Test"，但我的服务器将以"T e s T"的形式接收它。我总是在接收任何数据之前清空接收缓冲区。一个显而易见的解决方案是删除服务器端的所有空格，但这会打乱我发送多个单词的能力。这只是我的telnet的问题，还是我可以在服务器上做些什么来解决这个问题？

我正在使用WinSock2 API和Windows 10 Telnet。

编辑：我已经检查了额外字符的十六进制值，它是0x20。

编辑：以下是接收和处理传入telnet数据的代码。

// This client is trying to send some data to us
                memset(receiveBuffer, sizeof(receiveBuffer), 0);
                int receivedBytes = recv(client->socket, receiveBuffer, sizeof(receiveBuffer), 0);
                if (receivedBytes == SOCKET_ERROR)
                {
                    FD_CLR(client->socket, &masterFDSet);
                    std::cerr << "Error! recv(): " << WSAGetLastError() << std::endl;
                    closesocket(client->socket);
                    client->isDisconnected = true;
                    continue;
                }
                else if (receivedBytes == 0)
                {
                    FD_CLR(client->socket, &masterFDSet);
                    std::cout << "Socket " << client->socket << " was closed by the client." << std::endl;
                    closesocket(client->socket);
                    client->isDisconnected = true;
                    continue;
                }
                // Print out the hex value of the incoming data, for debug purposes
                const int siz_ar = strlen(receiveBuffer);
                for (int i = 0; i < siz_ar; i++)
                {
                    std::cout << std::hex << (int)receiveBuffer[i] << " " << std::dec;
                }
                std::cout << std::endl;
                std::string stringCRLF = "rn"; // Carraige return representation
                std::string stringBS = "b"; // Backspace representation
                std::string commandBuffer = receiveBuffer;
                if (commandBuffer.find(stringCRLF) != std::string::npos)
                {
                    // New line detected. Process message.
                    ProcessClientMessage(client);
                }
                else if (commandBuffer.find(stringBS) != std::string::npos)
                {
                    // Backspace detected,
                    int size = strlen(client->dataBuffer);
                    client->dataBuffer[size - 1] = '';
                }
                else
                {
                    // Strip any extra dumb characters that might have found their way in there
                    commandBuffer.erase(std::remove(commandBuffer.begin(), commandBuffer.end(), 'r'), commandBuffer.end());
                    commandBuffer.erase(std::remove(commandBuffer.begin(), commandBuffer.end(), 'n'), commandBuffer.end());
                    // Add the new data to the clients data buffer
                    strcat_s(client->dataBuffer, sizeof(client->dataBuffer), commandBuffer.c_str());
                }
                std::cout << "length of data buffer is " << strlen(client->dataBuffer) << std::endl;