?? zlg_socket.c
字號:
TcpStatus[s->queue[i]].My_Ip[0]=s->My_Ip[0];
TcpStatus[s->queue[i]].My_Ip[1]=s->My_Ip[1];
TcpStatus[s->queue[i]].My_Ip[2]=s->My_Ip[2];
TcpStatus[s->queue[i]].My_Ip[3]=s->My_Ip[3];
TcpStatus[s->queue[i]].My_Port=s->My_Port;
TcpStatus[s->queue[i]].StaSem=0x82;
}
}
OS_EXIT_CRITICAL();
return (s->Max_Queue);
}
uint8 accept( SOCKET * s, struct sockaddr *addr, int *addrlen )
{
uint16 i;
uint8 err;
if(s->protocol!=0)
return (0XFF);
if(s->Max_Queue==0)
return (0XFF);
for(i=0;i<s->Max_Queue;i++)
{
if(OSSemAccept(AppSemCon[s->queue[i]]))
{
break;
}
}
if(i>=s->Max_Queue)
{
for(i=0;i<s->Max_Queue;i++)
{
if(TcpStatus[s->queue[i]].State==TCP_STATE_LISTEN)
{
//OSSemPend(AppSemCon[s->queue[i]],0,&err);
OSSemPend(AppSemCon[s->queue[i]],400,&err);
if(err==OS_NO_ERR||err==OS_TIMEOUT)//等
break;
else
return (0XFF);
}
}
if(err==OS_TIMEOUT)
{
for(i=0;i<s->Max_Queue;i++)
{
if(TcpStatus[s->queue[i]].State==TCP_STATE_ESTABLISHED)
break;//連接中有已經(jīng)建立連接的了
}
if(i>=s->Max_Queue)
{
return (0XFF);//連接已經(jīng)滿了
}
}
}
addr->sin_addr[0]=TcpStatus[s->queue[i]].Dest_Ip[0];
addr->sin_addr[1]=TcpStatus[s->queue[i]].Dest_Ip[0];
addr->sin_addr[2]=TcpStatus[s->queue[i]].Dest_Ip[0];
addr->sin_addr[3]=TcpStatus[s->queue[i]].Dest_Ip[0];
addr->sin_port=TcpStatus[s->queue[i]].Dest_Port;
*addrlen=sizeof(*addr);
return (s->queue[i]);
}
uint16 recv( uint8 num, uint8 *buf, uint16 len, int flags )
{
uint16 i,temp,sum,tempwindow;
struct _pkst TxdData;
tempwindow=tempwindow;//去除編譯警告
flags=flags;
tempwindow=TcpStatus[num].Snd_Window;
if((TcpStatus[num].TcpDataQWrPtr==TcpStatus[num].TcpDataQRdPtr)&&(TcpStatus[num].Snd_Window!=0))
return (0);
else if(TcpStatus[num].TcpDataQRdPtr>=TcpStatus[num].TcpDataQWrPtr)//隊列已經(jīng)翻轉(zhuǎn)
{
temp=MAX_TCP_DATA-TcpStatus[num].TcpDataQRdPtr;
if(temp>=len)//len沒有翻轉(zhuǎn)
{
for(i=0;i<len;i++)
{
*buf=TcpStatus[num].TcpDataQ[TcpStatus[num].TcpDataQRdPtr];
buf++;
TcpStatus[num].TcpDataQRdPtr++;
}
TcpStatus[num].Snd_Window=TcpStatus[num].Snd_Window+len;
temp=len;
}
else ////len翻轉(zhuǎn)
{
for(i=0;i<temp;i++)
{
*buf=TcpStatus[num].TcpDataQ[TcpStatus[num].TcpDataQRdPtr];
buf++;
TcpStatus[num].TcpDataQRdPtr++;
}
TcpStatus[num].TcpDataQRdPtr=0;
sum=temp;
temp=TcpStatus[num].TcpDataQWrPtr;
if(temp>=(len-sum))//數(shù)據(jù)足夠
temp=len-sum;
for(i=0;i<temp;i++)
{
*buf=TcpStatus[num].TcpDataQ[i];
buf++;
TcpStatus[num].TcpDataQRdPtr++;
}
sum=sum+temp;
TcpStatus[num].Snd_Window=TcpStatus[num].Snd_Window+sum;
temp=sum;
}
}
else //隊列未翻轉(zhuǎn)
{
temp=TcpStatus[num].TcpDataQWrPtr-TcpStatus[num].TcpDataQRdPtr;
if(temp>=len)//數(shù)據(jù)足夠
temp=len;
for(i=0;i<temp;i++)
{
*buf=TcpStatus[num].TcpDataQ[TcpStatus[num].TcpDataQRdPtr];
buf++;
TcpStatus[num].TcpDataQRdPtr++;
}
TcpStatus[num].Snd_Window=TcpStatus[num].Snd_Window+temp;
}
TcpHeadHandle(num ,0x5000+TCP_ACK);//headlength 0x20,
TcpStatus[num].TcpDHeadUint8[2]=0;
TcpStatus[num].TcpDHeadUint8[3]=20;
sum=CheckSumTcp1(num,32);//12+28
TcpStatus[num].TcpHeadUint8[16]=(sum&0xff00)>>8;;
TcpStatus[num].TcpHeadUint8[17]=sum&0x00ff;
TxdData.STPTR=NULL;
TxdData.length=20;
TxdData.DAPTR=TcpStatus[num].TcpHeadUint8;
Send_Ip_Frame
(
&TxdData,
TcpStatus[num].Dest_Ip,
TcpStatus[num].My_Ip,
6
);
return (temp);
}
uint16 send( uint8 num, uint8 *buf, uint16 len, int flags )
{
struct _pkst TxdData;
uint16 temp;
uint8 err,i;
flags=flags;
if((TcpStatus[num].Dest_Max_Seg_Size>=len)&&(TcpStatus[num].State==TCP_STATE_ESTABLISHED))
{
TcpStatus[num].SenPassSeq=TcpStatus[num].SenFutureSeq;
TcpStatus[num].SenPassAck=TcpStatus[num].SenPassAck;
TcpStatus[num].SenFutureSeq=TcpStatus[num].SenPassSeq+len;
TcpStatus[num].RecFutureAck=TcpStatus[num].SenPassSeq+len;
TcpHeadHandle(num ,0x5000+TCP_PSH+TCP_ACK);//headlength 0x20,
TcpStatus[num].TcpDHeadUint8[2]=((len+20)&0XFF00)>>8;
TcpStatus[num].TcpDHeadUint8[3]=(len+20)&0X00FF;
OS_ENTER_CRITICAL();
memcpy (&(TcpStatus[num].TcpHeadUint8[20]), buf, len);
temp=len+32;
TxdData.length=CheckSumTcp1(num,temp);//12+20
OS_EXIT_CRITICAL();
TcpStatus[num].TcpHeadUint8[16]=(TxdData.length&0xff00)>>8;
TcpStatus[num].TcpHeadUint8[17]=TxdData.length&0x00ff;
TxdData.STPTR=NULL;
TxdData.length=20+len;
TxdData.DAPTR=TcpStatus[num].TcpHeadUint8;
i=0;
do
{
i++;
if(Send_Ip_Frame
(
&TxdData,
TcpStatus[num].Dest_Ip,
TcpStatus[num].My_Ip,
6
))
{
TcpStatus[num].StaSem=TcpStatus[num].StaSem|0x01;
OSSemPend(AppSemSend[num],400,&err);
if((err==OS_NO_ERR))//等
return(len);
if(TcpStatus[num].State!=TCP_STATE_ESTABLISHED)
return 0;
}
}while(i<2);
//Delete_Socket(num);
return 0;
}
else
{
return (0);
}
}
uint16 sendto( SOCKET s, uint8 *buf, uint16 len, int flags, struct sockaddr *to, uint16 tolen )
{
//uint16 temp;
udp_send UdpPacked;
struct _pkst TxdData;
if(len>1478)
return 0;
UdpPacked.UdpDHead.rev=0;
UdpPacked.UdpDHead.NextProtocal=17;
UdpPacked.UdpDHead.TotalLen=8+len;
#ifdef Little_End
UdpPacked.UdpDHead.TotalLen=swap_int16(UdpPacked.UdpDHead.TotalLen);
#endif
UdpPacked.UdpDHead.SourceIp[0]=s.My_Ip[0];
UdpPacked.UdpDHead.SourceIp[1]=s.My_Ip[1];
UdpPacked.UdpDHead.SourceIp[2]=s.My_Ip[2];
UdpPacked.UdpDHead.SourceIp[3]=s.My_Ip[3];
UdpPacked.UdpDHead.DestId[0]=((struct sockaddr *)to)->sin_addr[0];
UdpPacked.UdpDHead.DestId[1]=((struct sockaddr *)to)->sin_addr[1];
UdpPacked.UdpDHead.DestId[2]=((struct sockaddr *)to)->sin_addr[2];
UdpPacked.UdpDHead.DestId[3]=((struct sockaddr *)to)->sin_addr[3];
UdpPacked.Udp.SourcePort=s.My_Port;
UdpPacked.Udp.DestPort=((struct sockaddr *)to)->sin_port;
UdpPacked.Udp.length=8+len;
#ifdef Little_End
UdpPacked.Udp.SourcePort=swap_int16(UdpPacked.Udp.SourcePort);
UdpPacked.Udp.DestPort=swap_int16(UdpPacked.Udp.DestPort);
UdpPacked.Udp.length=swap_int16(UdpPacked.Udp.length);
#endif
OS_ENTER_CRITICAL();
memcpy (&(UdpPacked.Udp.udpdata), buf, len);
OS_EXIT_CRITICAL();
UdpPacked.Udp.Crc=0;
UdpPacked.Udp.Crc=CheckSumUdp((uint8 *)(&UdpPacked),len+20);
#ifdef Little_End
UdpPacked.Udp.Crc=swap_int16(UdpPacked.Udp.Crc);
#endif
TxdData.STPTR=NULL;
TxdData.length=8+len;
TxdData.DAPTR=(uint8 *)(&(UdpPacked.Udp));
if(Send_Ip_Frame
(
&TxdData,
UdpPacked.UdpDHead.DestId,
UdpPacked.UdpDHead.SourceIp,
17
))
{
return(len);
}
else
return(0);
}
uint16 recvfrom( SOCKET s, uint8 *buf, uint16 len, int flags, struct sockaddr *from, uint16 *fromlen )
{
uint16 temp;
uint8 j,err;
if(s.Udp_Queue>=MAX_UDP_LINKS)
return 0;
if(s.My_Port!=UdpStatus[s.Udp_Queue].My_Port)
return 0;
OSSemPend(UdpStatus[s.Udp_Queue].UdpSemRec,40,&err);
if(err==OS_TIMEOUT)
return 0;
else if(err==OS_NO_ERR)
{
j=0;
do
{
if(UdpStatus[s.Udp_Queue].info[j].num!=UdpMaxRec)
break;
j++;
}
while(j<UdpMaxRec);
if(j>=UdpMaxRec)
{
return (0);
}
from->sin_addr[0]=UdpStatus[s.Udp_Queue].info[j].De_Ip[0];
from->sin_addr[1]=UdpStatus[s.Udp_Queue].info[j].De_Ip[1];
from->sin_addr[2]=UdpStatus[s.Udp_Queue].info[j].De_Ip[2];
from->sin_addr[3]=UdpStatus[s.Udp_Queue].info[j].De_Ip[3];
from->sin_port=UdpStatus[s.Udp_Queue].info[j].De_Port;
OS_ENTER_CRITICAL();
UdpStatus[s.Udp_Queue].info[j].len=UdpStatus[s.Udp_Queue].info[j].len-8;
if(UdpStatus[s.Udp_Queue].info[j].len>=len)
{
memcpy (buf, (uint8 *)&(UdpRecBuff[UdpStatus[s.Udp_Queue].info[j].num])+8, len);
temp=len;
}
else
{
memcpy (buf, (uint8 *)&(UdpRecBuff[UdpStatus[s.Udp_Queue].info[j].num])+8, UdpStatus[s.Udp_Queue].info[j].len);
temp=UdpStatus[s.Udp_Queue].info[j].len;
}
UdpStatus[s.Udp_Queue].info[j].num=UdpMaxRec;
UdpStatus[s.Udp_Queue].info[j].len=0;
OS_EXIT_CRITICAL();
*fromlen=sizeof(*from);
return (temp);
}
else
return 0;
}
int closesocket( SOCKET s )
{
uint8 i;
if(s.protocol==TCP_PROTOCOL)
{
s.Max_Queue=0;
for(i=0;i<MAX_TCP_LINKS;i++)
s.queue[i]=0xff;
}
else if(s.protocol==UDP_PROTOCOL)
{
OS_ENTER_CRITICAL();
UdpStatus[s.Udp_Queue].My_Port=0;
UdpStatus[s.Udp_Queue].My_Ip[0]=0xff;
UdpStatus[s.Udp_Queue].My_Ip[1]=0xff;
UdpStatus[s.Udp_Queue].My_Ip[2]=0xff;
UdpStatus[s.Udp_Queue].My_Ip[3]=0xff;
for(i=0;i<UdpMaxRec;i++)
{
UdpStatus[s.Udp_Queue].info[i].num=UdpMaxRec;
UdpStatus[s.Udp_Queue].info[i].De_Port=0;
UdpStatus[s.Udp_Queue].info[i].len=0;
}
OS_EXIT_CRITICAL();
do
{
i=OSSemAccept(UdpStatus[s.Udp_Queue].UdpSemRec);
}while(i!=0);
}
s.State=0;
s.protocol=0xff;
s.af=0xff;
s.type=0xff;
s.My_Ip[0]=0xff;
s.My_Ip[1]=0xff;
s.My_Ip[2]=0xff;
s.My_Ip[3]=0xff;
s.My_Port=0;
s.Udp_Queue=MAX_UDP_LINKS;
return 1;
}
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