60 lines
No EOL
1.3 KiB
C
60 lines
No EOL
1.3 KiB
C
#ifndef _SOCKET_WRAPPER_H_
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#define _SOCKET_WRAPPER_H_
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#include <stdint.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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static const size_t DEFAULT_BUF_SIZE = 4096;
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static const size_t MINIMUM_BUF_SIZE = 1024;
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enum{
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RES_OK = 0,
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RES_ERR = 1,
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RES_USR_ERR = 2
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};
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#pragma pack(push,1)
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struct ReadOp{
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uint16_t file_url_size;/* strlen(data) */
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uint16_t padding0;
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};
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struct TransferResult{
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int16_t res;
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int16_t error_msg_size;
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int64_t file_size;
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int32_t err_number; /*errno*/
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};
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#pragma pack(pop)
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/**
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* find buffer size from sock
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* thread safe
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*/
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int getBufferSizeFrom(int sock);
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/**
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* return -2 if timeout occur.
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* otherwise, implement equal to 'recv'.
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* `timeout` unit is second.
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* thread safe
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*/
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ssize_t timeout_recv(int fd,void * buf,size_t n,int timeout);
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/**
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* recieve data to buf until all bytes.
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* thread safe
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*/
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ssize_t recv_until_byte(int fd,void * buf, size_t n,int timeout);
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/**
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* find sockaddr by hostname
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* it perform like `gethostbyname`
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* hostname could not be greater than _SC_HOST_NAME_MAX.
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* return 0 on success, otherwise return ecode.
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* ecode can be converted to string by `gai_strerror`.
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*/
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int getsockaddrbyname(int domain,int type, int protocol, const char * hostname_str, struct sockaddr * retaddr);
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#endif |