c++ - 从python3客户端向cpp服务器发送垃圾

Question

我有一个CPP服务器和python3客户端，但是当我发送数据时，我得到的是垃圾值(错误的数字和字符串中间的\ 0)
我尝试使用this answer和C++ TCP socket garbage value。

客户端代码(python3):

MESSAGE = "HELLO WORLD"
def send_via_socket(message):
    print(len(message))
    s.send(bytes([len(message)]))
    data = pack('<Q%ds' % len(message), len(message), message.encode())
    s.send(data)
    return True

SERVER_IP = "127.0.0.1"
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# Create a socket object
ans = s.connect((SERVER_IP, PORT))
if ans is None:
     write_to_log('connection to server establish')
     send_via_socket(MESSAGE)
else:
     write_to_log('connection failed')
     message = s.recv(1024)
     write_to_log(str(message, 'utf-8'))
     res = res
except socket.error as err:
    message = f"socket creation failed with error %s" % err
    write_to_log(message)
    return res

和服务器中的读取功能(cpp)

int Server::readString(int fd, std::string &str)
{
    size_t len;
    char *buf;

    auto bytesReceived =read(fd, &len, sizeof(len));
    if(bytesReceived == -1)
    {
        return bytesReceived;
    }
    buf = new char[len];
    bytesReceived = read(fd, buf, len);
    if(bytesReceived == -1)
    {
        return bytesReceived;
    }

    str.assign(buf, len);
    delete []buf;
    return bytesReceived;
}

我也有CPP客户，并且工作正常

Answer 1

我最后发现的答案是使用Oleguer Canal functions

它解决了所有垃圾问题