One network C question - 未名空间MITBBS历史存档

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One network C question

One network C question# Programming - 葵花宝典

q*z2005-05-07 07:05

1 楼

Hello I am a newbie on network programming.
I am trying to receive a packet
if((numbytes = recvfrom(udp_fd1, buf, MAXLEN-1, 0,(struct
sockaddr*)&register_addr, &addr_len))==-1){
fprintf(stderr, "error in recvfrom.\n");
exit(1);
}
The packet I am receiving has the following possible structure.
typedef struct struct_CN
{
unsigned char magicA;
unsigned char magicB;
unsigned short msgLen;
} CN;
typedef struct struct_Cc
{
CN msgHeader;
uns

n*t2005-05-07 07:05

2 楼

How do you send the structure,
generally you can not send raw C structure on
network. Better encode it to a network message
and send it.

【在 q***z 的大作中提到】

: Hello I am a newbie on network programming.
: I am trying to receive a packet
: if((numbytes = recvfrom(udp_fd1, buf, MAXLEN-1, 0,(struct
: sockaddr*)&register_addr, &addr_len))==-1){
: fprintf(stderr, "error in recvfrom.\n");
: exit(1);
: }
: The packet I am receiving has the following possible structure.
: typedef struct struct_CN
: {