When I run the raw socket program, it generates invalid arguments error

Please help me.
I can't find answers to this after you want to post 2 days. please help i am very new to socket programming and i wrote a little code to forward packets at tcp level since i used ip_queue and netlinks with NETLINK_FIREWALL protocol. What i did is

iptables -I OUTPUT -j QUEUE -p udp -destination-port 19989

I ran the command line.
my code (just to get packages not so much)
just avoid the icmp error on the remote machine and print the package info without going to the application layer.

1 #include<asm/types.h>  
2 #include<sys/socket.h>  
3 #include<linux/netlink.h>  
4 #include<linux/netfilter_ipv4/ip_queue.h>  
5 #include<stdio.h>  
6 #include<stdlib.h>  
7 #include<netinet/in.h>  
8 #include<arpa/inet.h>  
9 #include<netdb.h>    
10 #include<linux/ip.h>    
11 #include<linux/icmp.h>  
12 #include<string.h>  
13 #include<unistd.h>  
14   
15 int nl_sock_fd = 0;  
16 struct sockaddr_nl nl_addr;  
17 int seq = 0;  
18 struct ipq_mode_msg* modeMessage;  
19 struct ipq_verdict_msg *ver_data = NULL;  
20 struct nlmsghdr* netlinkHeader =NULL;  
21 struct ipq_packet_msg* packet = NULL;  
22 char buf1[128] ={0};  
23 char buf[4096] = {0};  
24 char buf2[8192] = {0};  
25   
26 int addrSize;  
27 int len,i;  
28   
29   
30 int main(int argc, char *argv[])  
31 {  
32 int iter= 0;  
33 
34 /******* create and set the values for netlink sockets*************/  
35 if((nl_sock_fd = socket( AF_NETLINK, SOCK_RAW, NETLINK_FIREWALL))<0)  
36 {  
37 printf("socket creation failed!\n");  
38 return ;  
39 }  
40 printf("socket fd =%d\n", nl_sock_fd);  
41   
42 // Set up the kernels address structure:  
43 memset(&nl_addr, 0, sizeof( struct sockaddr_nl ) );    
44 nl_addr.nl_family = AF_NETLINK;    
45 nl_addr.nl_pid = 0; // The with address 0 in netlink /getpid();    
46 nl_addr.nl_groups = 0; // we dont need any multicast groups  
47 nl_addr.nl_pad = 0;  
48 if(bind(nl_sock_fd, (struct sockaddr*)&nl_addr, sizeof(nl_addr))<0)  
49 {  
50 printf("bind failed");  
51 }  
52 /******************* set mode values ***************************/  
53 memset(buf1, 0, 128 );  
54 netlinkHeader = (struct nlmsghdr*)buf1;  
55 netlinkHeader->nlmsg_len = NLMSG_LENGTH(sizeof(struct ipq_mode_msg));  
56 //NLMSG_LENGTH size of the ancilliary data  
57 netlinkHeader->nlmsg_type = IPQM_MODE; //IPQM Packet  
58 netlinkHeader->nlmsg_flags = NLM_F_REQUEST; //request message   
59 netlinkHeader->nlmsg_seq = seq++; //to allow response correlation  
60 netlinkHeader->nlmsg_pid = getpid();  
61   
62 // modeMessage=(struct ipq_mode_msg*)NLMSG_DATA(netlinkHeader);  
63 modeMessage=NLMSG_DATA(netlinkHeader);  
64 //NLMSG_DATA returns a pointer to the ancilliary data which it contains  
65 modeMessage->value = IPQ_COPY_PACKET; //copy metadata and range 0 is entire packet  
66 modeMessage->range = 0; // copy the entire payload  
67   
68 if(sendto( nl_sock_fd, (void*)buf1, netlinkHeader->nlmsg_len, 0, (struct   sockaddr*)&nl_addr, s izeof(struct sockaddr_nl) ) < 0 )  
69 {  
70 printf("unable to set netlink mode ...\n");  
71 exit(0);  
72 }  
73 printf("portion of data sent to netlink\n");  
74 for(iter = 0; iter < 24; iter++ )  
75 {  
76 printf(" %x",(unsigned int)buf1[iter]);  
77 if(!(iter%10) && iter !=0)  
78 printf("\n");  
79 }   
80 printf("\n");  
81   
82 /*********** receiving msg ******************/  
83 printf("socket is up and waiting for messages....\n");  
84   
85 while(1)  
86 {  
87 //struct nlmsghdr* netlinkHeader = buf1;  
88   
89 //netlinkHeader = buf1;  
90 printf(" iam at recvfrom \n");  
91 len = recvfrom(nl_sock_fd, buf2, NLMSG_LENGTH(sizeof(struct ipq_packet_msg)), 0,   (struct soc kaddr*)&nl_addr, &addrSize );  
92 printf(" NLMSG_LENGTH = %d\n",NLMSG_LENGTH(sizeof(struct ipq_packet_msg)));  
93 if( len < 0 )  
94 {  
95 printf("unable to recive packet from the kernel\n");  
96 return 0;  
97 }  
98   
99 netlinkHeader = ( struct nlmsghdr* ) buf2;  
100   
101 printf("message received with pid=%d \n", nl_addr.nl_pid);  
102   
103 if( netlinkHeader->nlmsg_type == NLMSG_ERROR )  
104 {  
105 struct nlmsgerr* pError = (struct nlmsgerr*)NLMSG_DATA( netlinkHeader );  
106 if( pError->error != 0 ) // Error number 0 is an acknowledgement not an error.  
107 {  
108 printf("error occured while receiving the message from the kernel.\n");  
109 printf("error code %d \n ", pError->error);  
110 printf("\n****** %s ********\n",strerror( -1 * pError->error));       
111 printf("msg->nlmsg_len %d\n", pError->msg.nlmsg_len);  
112 printf("msg->nlmsg_type %x\n", pError->msg.nlmsg_type);  
113 printf("msg->nlmsg_flags %x\n",pError->msg.nlmsg_flags);  
114 printf("msg->nlmsg_seq: %d\n", pError->msg.nlmsg_seq);  
115 printf("msg->nlmsg_pid: %d\n", pError->msg.nlmsg_pid);  
116 return 0;  
117 }  
118 }  
119 else  
120 {  
121   
122 printf("Message from kernel:\n ");  
123 printf("Packet ID: %d\n",packet->packet_id);  
124 printf("Payload size:%d\n", packet->data_len);  
125 for(i = 0; i < packet->data_len; ++i )  
126 {  
127 printf("%c ", packet->payload[ i ]);  
128 }  
129 printf("\n");  
130   
131 }  
132 printf("\n dumping packets over \n");  
133 netlinkHeader=(struct nlmsghdr *)buf1;  
134 packet=NLMSG_DATA(netlinkHeader);  
135 /*for the example just forward all packets*/  
136 //netlinkHeader = (struct nlmsghdr*)buf2;  
137 netlinkHeader->nlmsg_type=IPQM_VERDICT;  
138 netlinkHeader->nlmsg_len=NLMSG_LENGTH(sizeof(struct ipq_verdict_msg));  
139 netlinkHeader->nlmsg_flags=(NLM_F_REQUEST);/*this is a request, don’t ask for an answer*/  
140 netlinkHeader->nlmsg_pid=getpid();  
141 netlinkHeader->nlmsg_seq=seq++;/*arbitrary unique value to allow response correlation*/  
142 ver_data=(struct ipq_verdict_msg *)NLMSG_DATA(netlinkHeader);  
143   
144 //ver_data->value=NF_ACCEPT;  
145 //ver_data->value=NF_QUEUE;  
146 ver_data->id=packet->packet_id;  
147 if(sendto(nl_sock_fd,(void *)netlinkHeader,netlinkHeader->nlmsg_len,0,
148 (struct sockaddr *)&nl_addr,sizeof(struct sockaddr_nl)) < 0)  
149 {  
150 perror("unable to send mode message");  
151 exit(0);  
152 }  
153   
154   
155 }  
156   
157 return 0;  
158 }  

      

        
        
        
      

    

the output comes as

socket fd =3  
portion of data sent to netlink  
18 0 0 0 11 0 1 0 0 0 0  
0 38 30 0 0 2 0 0 0 0  
0 0 0  
socket is up and waiting for messages....  
iam at recvfrom   
NLMSG_LENGTH = 88  
message received with pid=0   
error occured while receiving the message from the kernel.  
error code -22  



****** Invalid argument ********  
msg->nlmsg_len 24  
msg->nlmsg_type 11  
msg->nlmsg_flags 1  
msg->nlmsg_seq: 0  
msg->nlmsg_pid: 12344  

      

        
        
        
      

    

please help me
and give some better books to help me learn raw sockets