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simplify csum, added tcp option parser

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wangyu-
2018-07-20 09:29:10 -05:00
parent 30eb96608d
commit 2e8294ab88
5 changed files with 181 additions and 18 deletions
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14
common.h
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@@ -64,6 +64,9 @@ typedef long long i64_t;
typedef unsigned int u32_t;
typedef int i32_t;
typedef unsigned short u16_t;
typedef short i16_t;
typedef u32_t id_t;
typedef u64_t iv_t;
@@ -250,6 +253,16 @@ u32_t get_true_random_number();
u32_t get_true_random_number_nz();
u64_t ntoh64(u64_t a);
u64_t hton64(u64_t a);
void write_u16(char *,u16_t a);// network order
u16_t read_u16(char *);
void write_u32(char *,u32_t a);// network order
u32_t read_u32(char *);
void write_u64(char *,u64_t a);
u64_t read_uu64(char *);
bool larger_than_u16(uint16_t a,uint16_t b);
bool larger_than_u32(u32_t a,u32_t b);
void setnonblocking(int sock);
@@ -258,6 +271,7 @@ int set_buf_size(int fd,int socket_buf_size);
void myexit(int a);
unsigned short csum(const unsigned short *ptr,int nbytes);
unsigned short csum_with_header(char* header,int hlen,const unsigned short *ptr,int nbytes);
int numbers_to_char(id_t id1,id_t id2,id_t id3,char * &data,int &len);
int char_to_numbers(const char * data,int len,id_t &id1,id_t &id2,id_t &id3);