Fri Jul 24 00:41:50 2009

Asterisk developer's documentation


netsock.h File Reference

Network socket handling. More...

#include "asterisk/network.h"
#include "asterisk/io.h"

Go to the source code of this file.

Functions

ast_netsockast_netsock_bind (struct ast_netsock_list *list, struct io_context *ioc, const char *bindinfo, int defaultport, int tos, int cos, ast_io_cb callback, void *data)
ast_netsockast_netsock_bindaddr (struct ast_netsock_list *list, struct io_context *ioc, struct sockaddr_in *bindaddr, int tos, int cos, ast_io_cb callback, void *data)
sockaddr_in * ast_netsock_boundaddr (const struct ast_netsock *ns)
void * ast_netsock_data (const struct ast_netsock *ns)
ast_netsockast_netsock_find (struct ast_netsock_list *list, struct sockaddr_in *sa)
int ast_netsock_free (struct ast_netsock_list *list, struct ast_netsock *netsock)
int ast_netsock_init (struct ast_netsock_list *list)
ast_netsock_listast_netsock_list_alloc (void)
int ast_netsock_release (struct ast_netsock_list *list)
int ast_netsock_set_qos (int netsocket, int tos, int cos, const char *desc)
int ast_netsock_sockfd (const struct ast_netsock *ns)
void ast_netsock_unref (struct ast_netsock *ns)


Detailed Description

Network socket handling.

Definition in file netsock.h.


Function Documentation

struct ast_netsock* ast_netsock_bind ( struct ast_netsock_list list,
struct io_context ioc,
const char *  bindinfo,
int  defaultport,
int  tos,
int  cos,
ast_io_cb  callback,
void *  data 
)

Definition at line 173 of file netsock.c.

References ast_netsock_bindaddr(), ast_strdupa, inet_aton(), and strsep().

Referenced by peer_set_srcaddr(), and set_config().

00174 {
00175    struct sockaddr_in sin;
00176    char *tmp;
00177    char *host;
00178    char *port;
00179    int portno;
00180 
00181    memset(&sin, 0, sizeof(sin));
00182    sin.sin_family = AF_INET;
00183    sin.sin_port = htons(defaultport);
00184    tmp = ast_strdupa(bindinfo);
00185 
00186    host = strsep(&tmp, ":");
00187    port = tmp;
00188 
00189    if (port && ((portno = atoi(port)) > 0))
00190       sin.sin_port = htons(portno);
00191 
00192    inet_aton(host, &sin.sin_addr);
00193 
00194    return ast_netsock_bindaddr(list, ioc, &sin, tos, cos, callback, data);
00195 }

struct ast_netsock* ast_netsock_bindaddr ( struct ast_netsock_list list,
struct io_context ioc,
struct sockaddr_in *  bindaddr,
int  tos,
int  cos,
ast_io_cb  callback,
void *  data 
)

Definition at line 103 of file netsock.c.

References ast_calloc, ast_enable_packet_fragmentation(), ast_free, ast_inet_ntoa(), ast_io_add(), AST_IO_IN, ast_log(), ast_netsock_set_qos(), ASTOBJ_CONTAINER_LINK, ASTOBJ_INIT, errno, ast_netsock::ioc, ast_netsock::ioref, LOG_ERROR, LOG_WARNING, and netsocket.

Referenced by ast_netsock_bind().

00104 {
00105    int netsocket = -1;
00106    int *ioref;
00107    
00108    struct ast_netsock *ns;
00109    const int reuseFlag = 1;
00110    
00111    /* Make a UDP socket */
00112    netsocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
00113    
00114    if (netsocket < 0) {
00115       ast_log(LOG_ERROR, "Unable to create network socket: %s\n", strerror(errno));
00116       return NULL;
00117    }
00118    if (setsockopt(netsocket, SOL_SOCKET, SO_REUSEADDR, (char *)&reuseFlag, sizeof reuseFlag) < 0) {
00119          ast_log(LOG_WARNING, "Error setting SO_REUSEADDR on sockfd '%d'\n", netsocket);
00120    }
00121    if (bind(netsocket,(struct sockaddr *)bindaddr, sizeof(struct sockaddr_in))) {
00122       ast_log(LOG_ERROR, "Unable to bind to %s port %d: %s\n", ast_inet_ntoa(bindaddr->sin_addr), ntohs(bindaddr->sin_port), strerror(errno));
00123       close(netsocket);
00124       return NULL;
00125    }
00126 
00127    ast_netsock_set_qos(netsocket, tos, cos, "IAX2");
00128       
00129    ast_enable_packet_fragmentation(netsocket);
00130 
00131    if (!(ns = ast_calloc(1, sizeof(*ns)))) {
00132       close(netsocket);
00133       return NULL;
00134    }
00135    
00136    /* Establish I/O callback for socket read */
00137    if (!(ioref = ast_io_add(ioc, netsocket, callback, AST_IO_IN, ns))) {
00138       close(netsocket);
00139       ast_free(ns);
00140       return NULL;
00141    }  
00142    ASTOBJ_INIT(ns);
00143    ns->ioref = ioref;
00144    ns->ioc = ioc;
00145    ns->sockfd = netsocket;
00146    ns->data = data;
00147    memcpy(&ns->bindaddr, bindaddr, sizeof(ns->bindaddr));
00148    ASTOBJ_CONTAINER_LINK(list, ns);
00149 
00150    return ns;
00151 }

struct sockaddr_in* ast_netsock_boundaddr ( const struct ast_netsock ns  ) 

Definition at line 202 of file netsock.c.

References ast_netsock::bindaddr.

00203 {
00204    return &(ns->bindaddr);
00205 }

void* ast_netsock_data ( const struct ast_netsock ns  ) 

Definition at line 207 of file netsock.c.

References ast_netsock::data.

00208 {
00209    return ns->data;
00210 }

struct ast_netsock* ast_netsock_find ( struct ast_netsock_list list,
struct sockaddr_in *  sa 
)

Definition at line 88 of file netsock.c.

References ASTOBJ_CONTAINER_TRAVERSE, ASTOBJ_RDLOCK, ASTOBJ_UNLOCK, and inaddrcmp().

Referenced by peer_set_srcaddr().

00090 {
00091    struct ast_netsock *sock = NULL;
00092 
00093    ASTOBJ_CONTAINER_TRAVERSE(list, !sock, {
00094       ASTOBJ_RDLOCK(iterator);
00095       if (!inaddrcmp(&iterator->bindaddr, sa))
00096          sock = iterator;
00097       ASTOBJ_UNLOCK(iterator);
00098    });
00099 
00100    return sock;
00101 }

int ast_netsock_free ( struct ast_netsock_list list,
struct ast_netsock netsock 
)

int ast_netsock_init ( struct ast_netsock_list list  ) 

Definition at line 72 of file netsock.c.

References ASTOBJ_CONTAINER_INIT.

Referenced by load_module(), and set_config().

00073 {
00074    memset(list, 0, sizeof(*list));
00075    ASTOBJ_CONTAINER_INIT(list);
00076 
00077    return 0;
00078 }

struct ast_netsock_list* ast_netsock_list_alloc ( void   ) 

Definition at line 67 of file netsock.c.

References ast_calloc.

Referenced by load_module(), and set_config().

00068 {
00069    return ast_calloc(1, sizeof(struct ast_netsock_list));
00070 }

int ast_netsock_release ( struct ast_netsock_list list  ) 

Definition at line 80 of file netsock.c.

References ast_netsock_destroy(), ASTOBJ_CONTAINER_DESTROY, and ASTOBJ_CONTAINER_DESTROYALL.

Referenced by __unload_module(), and set_config().

00081 {
00082    ASTOBJ_CONTAINER_DESTROYALL(list, ast_netsock_destroy);
00083    ASTOBJ_CONTAINER_DESTROY(list);
00084 
00085    return 0;
00086 }

int ast_netsock_set_qos ( int  netsocket,
int  tos,
int  cos,
const char *  desc 
)

Definition at line 153 of file netsock.c.

References ast_log(), ast_verb, and LOG_WARNING.

Referenced by ast_netsock_bindaddr(), ast_rtp_setqos(), ast_udptl_setqos(), load_module(), and reload_config().

00154 {
00155    int res;
00156    
00157    if ((res = setsockopt(netsocket, IPPROTO_IP, IP_TOS, &tos, sizeof(tos))))
00158       ast_log(LOG_WARNING, "Unable to set %s TOS to %d, may be you have no root privileges\n", desc, tos);
00159    else if (tos)
00160       ast_verb(2, "Using %s TOS bits %d\n", desc, tos);
00161 
00162 #if defined(linux)                        
00163    if (setsockopt(netsocket, SOL_SOCKET, SO_PRIORITY, &cos, sizeof(cos)))
00164       ast_log(LOG_WARNING, "Unable to set %s CoS to %d\n", desc, cos);
00165    else if (cos)
00166       ast_verb(2, "Using %s CoS mark %d\n", desc, cos);
00167 #endif
00168                      
00169    return res;
00170 }

int ast_netsock_sockfd ( const struct ast_netsock ns  ) 

Definition at line 197 of file netsock.c.

Referenced by peer_set_srcaddr(), and set_config().

00198 {
00199    return ns ? ns-> sockfd : -1;
00200 }

void ast_netsock_unref ( struct ast_netsock ns  ) 

Definition at line 212 of file netsock.c.

References ast_netsock_destroy(), and ASTOBJ_UNREF.

Referenced by peer_set_srcaddr(), and set_config().

00213 {
00214    ASTOBJ_UNREF(ns, ast_netsock_destroy);
00215 }


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