Thu Jul 9 13:41:24 2009

Asterisk developer's documentation


netsock.h File Reference

Network socket handling. More...

#include "asterisk/network.h"
#include "asterisk/io.h"
#include "asterisk/astobj.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 166 of file netsock.c.

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

Referenced by peer_set_srcaddr(), and set_config().

00167 {
00168    struct sockaddr_in sin;
00169    char *tmp;
00170    char *host;
00171    char *port;
00172    int portno;
00173 
00174    memset(&sin, 0, sizeof(sin));
00175    sin.sin_family = AF_INET;
00176    sin.sin_port = htons(defaultport);
00177    tmp = ast_strdupa(bindinfo);
00178 
00179    host = strsep(&tmp, ":");
00180    port = tmp;
00181 
00182    if (port && ((portno = atoi(port)) > 0))
00183       sin.sin_port = htons(portno);
00184 
00185    inet_aton(host, &sin.sin_addr);
00186 
00187    return ast_netsock_bindaddr(list, ioc, &sin, tos, cos, callback, data);
00188 }

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 96 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().

00097 {
00098    int netsocket = -1;
00099    int *ioref;
00100    
00101    struct ast_netsock *ns;
00102    const int reuseFlag = 1;
00103    
00104    /* Make a UDP socket */
00105    netsocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
00106    
00107    if (netsocket < 0) {
00108       ast_log(LOG_ERROR, "Unable to create network socket: %s\n", strerror(errno));
00109       return NULL;
00110    }
00111    if (setsockopt(netsocket, SOL_SOCKET, SO_REUSEADDR, (char *)&reuseFlag, sizeof reuseFlag) < 0) {
00112          ast_log(LOG_WARNING, "Error setting SO_REUSEADDR on sockfd '%d'\n", netsocket);
00113    }
00114    if (bind(netsocket,(struct sockaddr *)bindaddr, sizeof(struct sockaddr_in))) {
00115       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));
00116       close(netsocket);
00117       return NULL;
00118    }
00119 
00120    ast_netsock_set_qos(netsocket, tos, cos, "IAX2");
00121       
00122    ast_enable_packet_fragmentation(netsocket);
00123 
00124    if (!(ns = ast_calloc(1, sizeof(*ns)))) {
00125       close(netsocket);
00126       return NULL;
00127    }
00128    
00129    /* Establish I/O callback for socket read */
00130    if (!(ioref = ast_io_add(ioc, netsocket, callback, AST_IO_IN, ns))) {
00131       close(netsocket);
00132       ast_free(ns);
00133       return NULL;
00134    }  
00135    ASTOBJ_INIT(ns);
00136    ns->ioref = ioref;
00137    ns->ioc = ioc;
00138    ns->sockfd = netsocket;
00139    ns->data = data;
00140    memcpy(&ns->bindaddr, bindaddr, sizeof(ns->bindaddr));
00141    ASTOBJ_CONTAINER_LINK(list, ns);
00142 
00143    return ns;
00144 }

struct sockaddr_in* ast_netsock_boundaddr ( const struct ast_netsock ns  ) 

Definition at line 195 of file netsock.c.

References ast_netsock::bindaddr.

00196 {
00197    return &(ns->bindaddr);
00198 }

void* ast_netsock_data ( const struct ast_netsock ns  ) 

Definition at line 200 of file netsock.c.

References ast_netsock::data.

00201 {
00202    return ns->data;
00203 }

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

Definition at line 81 of file netsock.c.

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

Referenced by peer_set_srcaddr().

00083 {
00084    struct ast_netsock *sock = NULL;
00085 
00086    ASTOBJ_CONTAINER_TRAVERSE(list, !sock, {
00087       ASTOBJ_RDLOCK(iterator);
00088       if (!inaddrcmp(&iterator->bindaddr, sa))
00089          sock = iterator;
00090       ASTOBJ_UNLOCK(iterator);
00091    });
00092 
00093    return sock;
00094 }

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 65 of file netsock.c.

References ASTOBJ_CONTAINER_INIT.

Referenced by load_module(), and set_config().

00066 {
00067    memset(list, 0, sizeof(*list));
00068    ASTOBJ_CONTAINER_INIT(list);
00069 
00070    return 0;
00071 }

struct ast_netsock_list* ast_netsock_list_alloc ( void   ) 

Definition at line 60 of file netsock.c.

References ast_calloc.

Referenced by load_module(), and set_config().

00061 {
00062    return ast_calloc(1, sizeof(struct ast_netsock_list));
00063 }

int ast_netsock_release ( struct ast_netsock_list list  ) 

Definition at line 73 of file netsock.c.

References ast_netsock_destroy(), ASTOBJ_CONTAINER_DESTROY, and ASTOBJ_CONTAINER_DESTROYALL.

Referenced by __unload_module(), and set_config().

00074 {
00075    ASTOBJ_CONTAINER_DESTROYALL(list, ast_netsock_destroy);
00076    ASTOBJ_CONTAINER_DESTROY(list);
00077 
00078    return 0;
00079 }

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

Definition at line 146 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().

00147 {
00148    int res;
00149    
00150    if ((res = setsockopt(netsocket, IPPROTO_IP, IP_TOS, &tos, sizeof(tos))))
00151       ast_log(LOG_WARNING, "Unable to set %s TOS to %d, may be you have no root privileges\n", desc, tos);
00152    else if (tos)
00153       ast_verb(2, "Using %s TOS bits %d\n", desc, tos);
00154 
00155 #if defined(linux)                        
00156    if (setsockopt(netsocket, SOL_SOCKET, SO_PRIORITY, &cos, sizeof(cos)))
00157       ast_log(LOG_WARNING, "Unable to set %s CoS to %d\n", desc, cos);
00158    else if (cos)
00159       ast_verb(2, "Using %s CoS mark %d\n", desc, cos);
00160 #endif
00161                      
00162    return res;
00163 }

int ast_netsock_sockfd ( const struct ast_netsock ns  ) 

Definition at line 190 of file netsock.c.

Referenced by peer_set_srcaddr(), and set_config().

00191 {
00192    return ns ? ns-> sockfd : -1;
00193 }

void ast_netsock_unref ( struct ast_netsock ns  ) 

Definition at line 205 of file netsock.c.

References ast_netsock_destroy(), and ASTOBJ_UNREF.

Referenced by peer_set_srcaddr(), and set_config().

00206 {
00207    ASTOBJ_UNREF(ns, ast_netsock_destroy);
00208 }


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