我的代码失败了。我以root用户的身份运行(与普通用户相同的行为)
首先,我想设置TOS,然后得到值。
int tos_local = 0x28;
if (setsockopt(sockfd, IPPROTO_TCP, IP_TOS, &tos_local, sizeof(tos_local))) {
error("error at socket option");
} else {
int tos=0;
int toslen=0;
if (getsockopt(sockfd, IPPROTO_TCP, IP_TOS, &t
我使用TCP在linux上运行了一个C++网络应用程序。我一直试图从接收到的数据包中提取DSCP标记以供TCP使用。我们有UDP的IP_RECVTOS套接字选项。但我已经在代码中测试过,它不适用于TCP。
除了原始套接字之外,我还有什么选择来解决这个问题?
Example code : The following is for UDP. I am looking for something similar for TCP.
//Set the socket option to receive IP_TOS:
unsigned char set = 0x03;
if(setso
我正在开发一个程序,其中我需要知道我的program.Since中的IP报头字段的值IP报头是20个字节:
struct ipheader {
unsigned char ip_hl:4, ip_v:4; /* this means that each member is 4 bits */
unsigned char ip_tos;
unsigned short int ip_len;
unsigned short int ip_id;
unsigned short int ip_off;
unsigned char ip_ttl
我正在尝试用C创建一个IP标头。
typedef struct header
{
//IP-Header
unsigned char ip_v:4, ip_hl:4;/* this means that each member is 4 bits */
unsigned char ip_tos; //1 Byte
unsigned short int ip_len; //2 Byte
unsigned short int ip_id; //2 Byte
unsigned short int ip_off; //2 Byte
当我试图使用ssh代理中持有的加密密钥进行ssh时,我得到以下信息(使用ssh -vvv):
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/cowens/.ssh/id_rsa
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Server accepts key: pkalg ssh-rsa blen 279
debug2: input_userauth
我刚安装了带有等离子桌面的Linux。使用SSH从Github克隆我的repos会给我带来一些麻烦。我试过了
[andreas@Bixente ~]$ ssh-add -l
Could not open a connection to your authentication agent.
[andreas@Bixente ~]$ eval "$(ssh-agent -s)"
Agent pid 5346
[andreas@Bixente ~]$ ssh-add -l
The agent has no identities.
[andreas@Bixente ~]$ ssh-ad
在尝试从我的windows膝上型电脑安装git SSH时,我看到了下面的内容。我该怎么做呢?目前,我看到“通道0上的shell请求失败”。
命令示例:
ssh -vvvT git@<server> -p 7999
Sharing last few lines of the output below
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug3: send packet: type 9
我正在尝试实现握手功能。我正在发送SYN数据包和服务器响应通过ACK包。为了获得服务器响应,我使用了recvfrom函数,即挂起。这是我的密码。
import socket, sys
from struct import *
import codecs
def checksum(msg):
s = 0
for i in range(0, len(msg), 2):
w = ord(msg[i]) + (ord(msg[i+1]) << 8 )
s = s + w
s = (s>>16) + (s & 0