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Added some comments. Does socket setup correctly.

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FossilOrigin-Name: 9544160736b702cbea47745418e8723621aa8a50c60aa6129b22303a2c99a3c5
This commit is contained in:
7u83@mail.ru 2016-03-20 14:23:27 +00:00
parent 6a4965ebe1
commit 59d21b531f
1 changed files with 29 additions and 32 deletions
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61
src/cw/sock_receive.c
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@ -1,7 +1,7 @@
/*
This file is part of libcapwap.
This file is part of actube.
libcapwap is free software: you can redistribute it and/or modify
actube is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
@ -16,6 +16,11 @@
*/
/**
* @file
* @brief Implementation of sock_receive
*/
#include <errno.h>
#include <netinet/in.h>
#include <arpa/inet.h>
@ -23,37 +28,29 @@
#include "sock.h"
int
sock_receive (int sock, void *buf, size_t len, int flags,
struct sockaddr *srcaddr, socklen_t * addrlen)
/**
* Receive data from a socket
* @param sock the socket
* @param buf destination buffer
* @param len length of destination buffer
* @srcaddr receives the source address
* @srcaddrlen receives the length of the source address
* @return the number of bytes read oder -1 if an error has occured.
*
* If the return value is -1, errno is set to the appropriate error
*/
int sock_receive(int sock, void *buf, size_t len, int flags,
struct sockaddr *srcaddr, socklen_t * srcaddrlen)
{
// socklen_t al = sizeof(struct sockaddr_storage);
*srcaddrlen=sizeof(struct sockaddr);
memset(srcaddr, 0, sizeof(struct sockaddr));
//unsigned int al;
socklen_t al;
al = sizeof (struct sockaddr_storage);
memset (srcaddr, 0, sizeof (struct sockaddr));
// srcaddr->sa_port=999;
int n;
while ((n = recvfrom (sock, (char *) buf, len, flags, srcaddr, &al)) < 0)
{
if (errno != EINTR)
int n;
while ((n = recvfrom(sock, (char *) buf, len, flags, srcaddr, srcaddrlen)) < 0) {
if (errno != EINTR)
return n;
}
return n;
}
// printf("Received betes %d\n",n);
// char str[8000];
// sock_addrtostr(srcaddr,str,1000);
// printf("RECFROM: %s\n",str);
// struct sockaddr_in * s = (struct sockaddr_in*)srcaddr;
// s->sin_port=htons(78);
// sock_addrtostr(srcaddr,str,1000);
// printf("RECFROMset: %s\n",str);
// exit(9);
return n;
}