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NetServices/if/lwip/lwipNetTcpSocket.cpp@0:05ccbd4f84f1, 2013-12-02 (annotated)

Committer:
hendrikvincent
Date:
Mon Dec 02 09:01:23 2013 +0000
Revision:
0:05ccbd4f84f1
eerste programma;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hendrikvincent 0:05ccbd4f84f1 1
hendrikvincent 0:05ccbd4f84f1 2 /*
hendrikvincent 0:05ccbd4f84f1 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
hendrikvincent 0:05ccbd4f84f1 4
hendrikvincent 0:05ccbd4f84f1 5 Permission is hereby granted, free of charge, to any person obtaining a copy
hendrikvincent 0:05ccbd4f84f1 6 of this software and associated documentation files (the "Software"), to deal
hendrikvincent 0:05ccbd4f84f1 7 in the Software without restriction, including without limitation the rights
hendrikvincent 0:05ccbd4f84f1 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
hendrikvincent 0:05ccbd4f84f1 9 copies of the Software, and to permit persons to whom the Software is
hendrikvincent 0:05ccbd4f84f1 10 furnished to do so, subject to the following conditions:
hendrikvincent 0:05ccbd4f84f1 11
hendrikvincent 0:05ccbd4f84f1 12 The above copyright notice and this permission notice shall be included in
hendrikvincent 0:05ccbd4f84f1 13 all copies or substantial portions of the Software.
hendrikvincent 0:05ccbd4f84f1 14
hendrikvincent 0:05ccbd4f84f1 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
hendrikvincent 0:05ccbd4f84f1 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
hendrikvincent 0:05ccbd4f84f1 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
hendrikvincent 0:05ccbd4f84f1 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
hendrikvincent 0:05ccbd4f84f1 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
hendrikvincent 0:05ccbd4f84f1 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
hendrikvincent 0:05ccbd4f84f1 21 THE SOFTWARE.
hendrikvincent 0:05ccbd4f84f1 22 */
hendrikvincent 0:05ccbd4f84f1 23
hendrikvincent 0:05ccbd4f84f1 24 #include "lwipNetTcpSocket.h"
hendrikvincent 0:05ccbd4f84f1 25 #include "lwip/tcp.h"
hendrikvincent 0:05ccbd4f84f1 26
hendrikvincent 0:05ccbd4f84f1 27 //#define __DEBUG
hendrikvincent 0:05ccbd4f84f1 28 #include "dbg/dbg.h"
hendrikvincent 0:05ccbd4f84f1 29
hendrikvincent 0:05ccbd4f84f1 30 #include "netCfg.h"
hendrikvincent 0:05ccbd4f84f1 31 #if NET_LWIP_STACK
hendrikvincent 0:05ccbd4f84f1 32
hendrikvincent 0:05ccbd4f84f1 33 LwipNetTcpSocket::LwipNetTcpSocket(tcp_pcb* pPcb /*= NULL*/) : NetTcpSocket(), m_pPcb(pPcb), m_lpInNetTcpSocket(), //Passes a pcb if already created (by an accept req for instance), in that case transfers ownership
hendrikvincent 0:05ccbd4f84f1 34 m_pReadPbuf(NULL)
hendrikvincent 0:05ccbd4f84f1 35 {
hendrikvincent 0:05ccbd4f84f1 36 DBG("New NetTcpSocket %p\n", (void*)this);
hendrikvincent 0:05ccbd4f84f1 37 if(!m_pPcb)
hendrikvincent 0:05ccbd4f84f1 38 {
hendrikvincent 0:05ccbd4f84f1 39 m_pPcb = tcp_new();
hendrikvincent 0:05ccbd4f84f1 40 DBG("Creating new PCB %p\n", m_pPcb);
hendrikvincent 0:05ccbd4f84f1 41 }
hendrikvincent 0:05ccbd4f84f1 42 if(m_pPcb)
hendrikvincent 0:05ccbd4f84f1 43 {
hendrikvincent 0:05ccbd4f84f1 44 //Setup callbacks
hendrikvincent 0:05ccbd4f84f1 45 tcp_arg( (tcp_pcb*) m_pPcb, (void*) this ); //this will be passed to each static callback
hendrikvincent 0:05ccbd4f84f1 46
hendrikvincent 0:05ccbd4f84f1 47 tcp_recv( (tcp_pcb*) m_pPcb, LwipNetTcpSocket::sRecvCb );
hendrikvincent 0:05ccbd4f84f1 48 tcp_sent((tcp_pcb*) m_pPcb, LwipNetTcpSocket::sSentCb );
hendrikvincent 0:05ccbd4f84f1 49 tcp_err( (tcp_pcb*) m_pPcb, LwipNetTcpSocket::sErrCb );
hendrikvincent 0:05ccbd4f84f1 50 //Connected callback is defined in connect()
hendrikvincent 0:05ccbd4f84f1 51 //Accept callback is defined in listen()
hendrikvincent 0:05ccbd4f84f1 52 DBG("NetTcpSocket created.\n");
hendrikvincent 0:05ccbd4f84f1 53 }
hendrikvincent 0:05ccbd4f84f1 54 }
hendrikvincent 0:05ccbd4f84f1 55
hendrikvincent 0:05ccbd4f84f1 56 LwipNetTcpSocket::~LwipNetTcpSocket()
hendrikvincent 0:05ccbd4f84f1 57 {
hendrikvincent 0:05ccbd4f84f1 58 /* if(m_pPcb)
hendrikvincent 0:05ccbd4f84f1 59 tcp_close( (tcp_pcb*) m_pPcb); //Disconnect & free pcb*/
hendrikvincent 0:05ccbd4f84f1 60 close();
hendrikvincent 0:05ccbd4f84f1 61 }
hendrikvincent 0:05ccbd4f84f1 62
hendrikvincent 0:05ccbd4f84f1 63 NetTcpSocketErr LwipNetTcpSocket::bind(const Host& me)
hendrikvincent 0:05ccbd4f84f1 64 {
hendrikvincent 0:05ccbd4f84f1 65 if(!m_pPcb)
hendrikvincent 0:05ccbd4f84f1 66 return NETTCPSOCKET_MEM; //NetTcpSocket was not properly initialised, should destroy it & retry
hendrikvincent 0:05ccbd4f84f1 67
hendrikvincent 0:05ccbd4f84f1 68 err_t err = tcp_bind( (tcp_pcb*) m_pPcb, IP_ADDR_ANY, me.getPort()); //IP_ADDR_ANY : Bind the connection to all local addresses
hendrikvincent 0:05ccbd4f84f1 69 if(err)
hendrikvincent 0:05ccbd4f84f1 70 return NETTCPSOCKET_INUSE;
hendrikvincent 0:05ccbd4f84f1 71
hendrikvincent 0:05ccbd4f84f1 72 return NETTCPSOCKET_OK;
hendrikvincent 0:05ccbd4f84f1 73 }
hendrikvincent 0:05ccbd4f84f1 74
hendrikvincent 0:05ccbd4f84f1 75 NetTcpSocketErr LwipNetTcpSocket::listen()
hendrikvincent 0:05ccbd4f84f1 76 {
hendrikvincent 0:05ccbd4f84f1 77 if(!m_pPcb)
hendrikvincent 0:05ccbd4f84f1 78 return NETTCPSOCKET_MEM; //NetTcpSocket was not properly initialised, should destroy it & retry
hendrikvincent 0:05ccbd4f84f1 79 /*
hendrikvincent 0:05ccbd4f84f1 80 From doc/rawapi.txt :
hendrikvincent 0:05ccbd4f84f1 81
hendrikvincent 0:05ccbd4f84f1 82 The tcp_listen() function returns a new connection identifier, and
hendrikvincent 0:05ccbd4f84f1 83 the one passed as an argument to the function will be
hendrikvincent 0:05ccbd4f84f1 84 deallocated. The reason for this behavior is that less memory is
hendrikvincent 0:05ccbd4f84f1 85 needed for a connection that is listening, so tcp_listen() will
hendrikvincent 0:05ccbd4f84f1 86 reclaim the memory needed for the original connection and allocate a
hendrikvincent 0:05ccbd4f84f1 87 new smaller memory block for the listening connection.
hendrikvincent 0:05ccbd4f84f1 88 */
hendrikvincent 0:05ccbd4f84f1 89
hendrikvincent 0:05ccbd4f84f1 90 // tcp_pcb* pNewPcb = tcp_listen(m_pPcb);
hendrikvincent 0:05ccbd4f84f1 91 tcp_pcb* pNewPcb = tcp_listen_with_backlog((tcp_pcb*)m_pPcb, 5);
hendrikvincent 0:05ccbd4f84f1 92 if( !pNewPcb ) //Not enough memory to create the listening pcb
hendrikvincent 0:05ccbd4f84f1 93 return NETTCPSOCKET_MEM;
hendrikvincent 0:05ccbd4f84f1 94
hendrikvincent 0:05ccbd4f84f1 95 m_pPcb = pNewPcb;
hendrikvincent 0:05ccbd4f84f1 96
hendrikvincent 0:05ccbd4f84f1 97 tcp_accept( (tcp_pcb*) m_pPcb, LwipNetTcpSocket::sAcceptCb );
hendrikvincent 0:05ccbd4f84f1 98
hendrikvincent 0:05ccbd4f84f1 99 return NETTCPSOCKET_OK;
hendrikvincent 0:05ccbd4f84f1 100 }
hendrikvincent 0:05ccbd4f84f1 101
hendrikvincent 0:05ccbd4f84f1 102 NetTcpSocketErr LwipNetTcpSocket::connect(const Host& host)
hendrikvincent 0:05ccbd4f84f1 103 {
hendrikvincent 0:05ccbd4f84f1 104 if(!m_pPcb)
hendrikvincent 0:05ccbd4f84f1 105 return NETTCPSOCKET_MEM; //NetTcpSocket was not properly initialised, should destroy it & retry
hendrikvincent 0:05ccbd4f84f1 106
hendrikvincent 0:05ccbd4f84f1 107 ip_addr_t ip = host.getIp().getStruct();
hendrikvincent 0:05ccbd4f84f1 108 err_t err = tcp_connect( (tcp_pcb*) m_pPcb, &ip, host.getPort(), LwipNetTcpSocket::sConnectedCb );
hendrikvincent 0:05ccbd4f84f1 109
hendrikvincent 0:05ccbd4f84f1 110 if(err)
hendrikvincent 0:05ccbd4f84f1 111 return NETTCPSOCKET_MEM;
hendrikvincent 0:05ccbd4f84f1 112
hendrikvincent 0:05ccbd4f84f1 113 return NETTCPSOCKET_OK;
hendrikvincent 0:05ccbd4f84f1 114 }
hendrikvincent 0:05ccbd4f84f1 115
hendrikvincent 0:05ccbd4f84f1 116 NetTcpSocketErr LwipNetTcpSocket::accept(Host* pClient, NetTcpSocket** ppNewNetTcpSocket)
hendrikvincent 0:05ccbd4f84f1 117 {
hendrikvincent 0:05ccbd4f84f1 118 if( !m_pPcb ) //Pcb doesn't exist (anymore)
hendrikvincent 0:05ccbd4f84f1 119 return NETTCPSOCKET_MEM;
hendrikvincent 0:05ccbd4f84f1 120 //Dequeue a connection
hendrikvincent 0:05ccbd4f84f1 121 //if( m_lpInPcb.empty() )
hendrikvincent 0:05ccbd4f84f1 122 if( m_lpInNetTcpSocket.empty() )
hendrikvincent 0:05ccbd4f84f1 123 return NETTCPSOCKET_EMPTY;
hendrikvincent 0:05ccbd4f84f1 124
hendrikvincent 0:05ccbd4f84f1 125 tcp_accepted( ((tcp_pcb*) m_pPcb) ); //Should fire proper events //WARN: m_pPcb is the GOOD param here (and not pInPcb)
hendrikvincent 0:05ccbd4f84f1 126
hendrikvincent 0:05ccbd4f84f1 127 /* tcp_pcb* pInPcb = m_lpInPcb.front();
hendrikvincent 0:05ccbd4f84f1 128 m_lpInPcb.pop();*/
hendrikvincent 0:05ccbd4f84f1 129
hendrikvincent 0:05ccbd4f84f1 130 if( (m_lpInNetTcpSocket.front()) == NULL )
hendrikvincent 0:05ccbd4f84f1 131 {
hendrikvincent 0:05ccbd4f84f1 132 m_lpInNetTcpSocket.pop();
hendrikvincent 0:05ccbd4f84f1 133 return NETTCPSOCKET_RST;
hendrikvincent 0:05ccbd4f84f1 134 }
hendrikvincent 0:05ccbd4f84f1 135
hendrikvincent 0:05ccbd4f84f1 136 if( (m_lpInNetTcpSocket.front())->m_closed )
hendrikvincent 0:05ccbd4f84f1 137 {
hendrikvincent 0:05ccbd4f84f1 138 Net::releaseTcpSocket(m_lpInNetTcpSocket.front());
hendrikvincent 0:05ccbd4f84f1 139 m_lpInNetTcpSocket.pop();
hendrikvincent 0:05ccbd4f84f1 140 return NETTCPSOCKET_RST;
hendrikvincent 0:05ccbd4f84f1 141 }
hendrikvincent 0:05ccbd4f84f1 142
hendrikvincent 0:05ccbd4f84f1 143 ip_addr_t* ip = (ip_addr_t*) &( (m_lpInNetTcpSocket.front()->m_pPcb)->remote_ip);
hendrikvincent 0:05ccbd4f84f1 144
hendrikvincent 0:05ccbd4f84f1 145 *ppNewNetTcpSocket = m_lpInNetTcpSocket.front();
hendrikvincent 0:05ccbd4f84f1 146 *pClient = Host(
hendrikvincent 0:05ccbd4f84f1 147 IpAddr(
hendrikvincent 0:05ccbd4f84f1 148 ip
hendrikvincent 0:05ccbd4f84f1 149 ),
hendrikvincent 0:05ccbd4f84f1 150 m_lpInNetTcpSocket.front()->m_pPcb->remote_port
hendrikvincent 0:05ccbd4f84f1 151 );
hendrikvincent 0:05ccbd4f84f1 152 m_lpInNetTcpSocket.pop();
hendrikvincent 0:05ccbd4f84f1 153 // *pClient = Host( IpAddr(pInPcb->remote_ip), pInPcb->remote_port );
hendrikvincent 0:05ccbd4f84f1 154
hendrikvincent 0:05ccbd4f84f1 155 //Return a new socket
hendrikvincent 0:05ccbd4f84f1 156 // *ppNewNetTcpSocket = (NetTcpSocket*) new LwipNetTcpSocket(pInPcb);
hendrikvincent 0:05ccbd4f84f1 157
hendrikvincent 0:05ccbd4f84f1 158 //tcp_accepted( ((tcp_pcb*) m_pPcb) ); //Should fire proper events //WARN: m_pPcb is the GOOD param here (and not pInPcb)
hendrikvincent 0:05ccbd4f84f1 159
hendrikvincent 0:05ccbd4f84f1 160 /* if(*ppNewNetTcpSocket == NULL)
hendrikvincent 0:05ccbd4f84f1 161 {
hendrikvincent 0:05ccbd4f84f1 162 DBG("Not enough mem, socket dropped in LwipNetTcpSocket::accept.\n");
hendrikvincent 0:05ccbd4f84f1 163 tcp_abort(pInPcb);
hendrikvincent 0:05ccbd4f84f1 164 }*/
hendrikvincent 0:05ccbd4f84f1 165
hendrikvincent 0:05ccbd4f84f1 166 return NETTCPSOCKET_OK;
hendrikvincent 0:05ccbd4f84f1 167 }
hendrikvincent 0:05ccbd4f84f1 168
hendrikvincent 0:05ccbd4f84f1 169 #define MAX(a,b) (((a)>(b))?(a):(b))
hendrikvincent 0:05ccbd4f84f1 170 #define MIN(a,b) (((a)<(b))?(a):(b))
hendrikvincent 0:05ccbd4f84f1 171
hendrikvincent 0:05ccbd4f84f1 172 int /*if < 0 : NetTcpSocketErr*/ LwipNetTcpSocket::send(const char* buf, int len)
hendrikvincent 0:05ccbd4f84f1 173 {
hendrikvincent 0:05ccbd4f84f1 174 if( !m_pPcb ) //Pcb doesn't exist (anymore)
hendrikvincent 0:05ccbd4f84f1 175 return NETTCPSOCKET_MEM;
hendrikvincent 0:05ccbd4f84f1 176 int outLen = MIN( len, tcp_sndbuf( (tcp_pcb*) m_pPcb) );
hendrikvincent 0:05ccbd4f84f1 177 //tcp_sndbuf() returns the number of bytes available in the output queue, so never go above it
hendrikvincent 0:05ccbd4f84f1 178 err_t err = tcp_write( (tcp_pcb*) m_pPcb, (void*) buf, outLen, TCP_WRITE_FLAG_COPY );
hendrikvincent 0:05ccbd4f84f1 179 //Flags are TCP_WRITE_FLAG_COPY & TCP_WRITE_FLAG_MORE (see tcp_out.c) :
hendrikvincent 0:05ccbd4f84f1 180 //If TCP_WRITE_FLAG_MORE is not set ask client to push buffered data to app
hendrikvincent 0:05ccbd4f84f1 181 if(err)
hendrikvincent 0:05ccbd4f84f1 182 {
hendrikvincent 0:05ccbd4f84f1 183 switch( err )
hendrikvincent 0:05ccbd4f84f1 184 {
hendrikvincent 0:05ccbd4f84f1 185 case ERR_CONN:
hendrikvincent 0:05ccbd4f84f1 186 return (int) NETTCPSOCKET_SETUP; //Not connected properly
hendrikvincent 0:05ccbd4f84f1 187 case ERR_ARG:
hendrikvincent 0:05ccbd4f84f1 188 return (int) NETTCPSOCKET_SETUP; //Wrong args ! (like buf pointing to NULL)
hendrikvincent 0:05ccbd4f84f1 189 case ERR_MEM:
hendrikvincent 0:05ccbd4f84f1 190 default:
hendrikvincent 0:05ccbd4f84f1 191 return (int) NETTCPSOCKET_MEM; //Not enough memory
hendrikvincent 0:05ccbd4f84f1 192 }
hendrikvincent 0:05ccbd4f84f1 193 }
hendrikvincent 0:05ccbd4f84f1 194 return outLen;
hendrikvincent 0:05ccbd4f84f1 195 }
hendrikvincent 0:05ccbd4f84f1 196
hendrikvincent 0:05ccbd4f84f1 197 int /*if < 0 : NetTcpSocketErr*/ LwipNetTcpSocket::recv(char* buf, int len)
hendrikvincent 0:05ccbd4f84f1 198 {
hendrikvincent 0:05ccbd4f84f1 199 if( !m_pPcb ) //Pcb doesn't exist (anymore)
hendrikvincent 0:05ccbd4f84f1 200 return NETTCPSOCKET_MEM;
hendrikvincent 0:05ccbd4f84f1 201 int inLen = 0;
hendrikvincent 0:05ccbd4f84f1 202 int cpyLen = 0;
hendrikvincent 0:05ccbd4f84f1 203
hendrikvincent 0:05ccbd4f84f1 204 static int rmgLen = 0;
hendrikvincent 0:05ccbd4f84f1 205 //Contains the remaining len in this pbuf
hendrikvincent 0:05ccbd4f84f1 206
hendrikvincent 0:05ccbd4f84f1 207 if( !m_pReadPbuf )
hendrikvincent 0:05ccbd4f84f1 208 {
hendrikvincent 0:05ccbd4f84f1 209 rmgLen = 0;
hendrikvincent 0:05ccbd4f84f1 210 return 0;
hendrikvincent 0:05ccbd4f84f1 211 }
hendrikvincent 0:05ccbd4f84f1 212
hendrikvincent 0:05ccbd4f84f1 213 if ( !rmgLen ) //We did not know m_pReadPbuf->len last time we called this fn
hendrikvincent 0:05ccbd4f84f1 214 {
hendrikvincent 0:05ccbd4f84f1 215 rmgLen = m_pReadPbuf->len;
hendrikvincent 0:05ccbd4f84f1 216 }
hendrikvincent 0:05ccbd4f84f1 217
hendrikvincent 0:05ccbd4f84f1 218 while ( inLen < len )
hendrikvincent 0:05ccbd4f84f1 219 {
hendrikvincent 0:05ccbd4f84f1 220 cpyLen = MIN( (len - inLen), rmgLen ); //Remaining len to copy, remaining len in THIS pbuf
hendrikvincent 0:05ccbd4f84f1 221 memcpy((void*)buf, (void*)((char*)(m_pReadPbuf->payload) + (m_pReadPbuf->len - rmgLen)), cpyLen);
hendrikvincent 0:05ccbd4f84f1 222 inLen += cpyLen;
hendrikvincent 0:05ccbd4f84f1 223 buf += cpyLen;
hendrikvincent 0:05ccbd4f84f1 224
hendrikvincent 0:05ccbd4f84f1 225 rmgLen = rmgLen - cpyLen; //Update rmgLen
hendrikvincent 0:05ccbd4f84f1 226
hendrikvincent 0:05ccbd4f84f1 227 if( rmgLen > 0 )
hendrikvincent 0:05ccbd4f84f1 228 {
hendrikvincent 0:05ccbd4f84f1 229 //We did not read this pbuf completely, so let's save it's pos & return
hendrikvincent 0:05ccbd4f84f1 230 break;
hendrikvincent 0:05ccbd4f84f1 231 }
hendrikvincent 0:05ccbd4f84f1 232
hendrikvincent 0:05ccbd4f84f1 233 if(m_pReadPbuf->next)
hendrikvincent 0:05ccbd4f84f1 234 {
hendrikvincent 0:05ccbd4f84f1 235 pbuf* pNextPBuf = m_pReadPbuf->next;
hendrikvincent 0:05ccbd4f84f1 236 m_pReadPbuf->next = NULL; //So that it is not freed as well
hendrikvincent 0:05ccbd4f84f1 237 //We get the reference to pNextPBuf from m_pReadPbuf
hendrikvincent 0:05ccbd4f84f1 238 pbuf_free((pbuf*)m_pReadPbuf);
hendrikvincent 0:05ccbd4f84f1 239 m_pReadPbuf = pNextPBuf;
hendrikvincent 0:05ccbd4f84f1 240 rmgLen = m_pReadPbuf->len;
hendrikvincent 0:05ccbd4f84f1 241 }
hendrikvincent 0:05ccbd4f84f1 242 else
hendrikvincent 0:05ccbd4f84f1 243 {
hendrikvincent 0:05ccbd4f84f1 244 pbuf_free((pbuf*)m_pReadPbuf);
hendrikvincent 0:05ccbd4f84f1 245 m_pReadPbuf = NULL;
hendrikvincent 0:05ccbd4f84f1 246 rmgLen = 0;
hendrikvincent 0:05ccbd4f84f1 247 break; //No more data to read
hendrikvincent 0:05ccbd4f84f1 248 }
hendrikvincent 0:05ccbd4f84f1 249
hendrikvincent 0:05ccbd4f84f1 250 }
hendrikvincent 0:05ccbd4f84f1 251
hendrikvincent 0:05ccbd4f84f1 252 //tcp_recved(m_pPcb, inLen); //Acknowledge the reception
hendrikvincent 0:05ccbd4f84f1 253
hendrikvincent 0:05ccbd4f84f1 254 return inLen;
hendrikvincent 0:05ccbd4f84f1 255 }
hendrikvincent 0:05ccbd4f84f1 256
hendrikvincent 0:05ccbd4f84f1 257 NetTcpSocketErr LwipNetTcpSocket::close()
hendrikvincent 0:05ccbd4f84f1 258 {
hendrikvincent 0:05ccbd4f84f1 259 //DBG("LwipNetTcpSocket::close() : Closing...\n");
hendrikvincent 0:05ccbd4f84f1 260
hendrikvincent 0:05ccbd4f84f1 261 if(m_closed)
hendrikvincent 0:05ccbd4f84f1 262 return NETTCPSOCKET_OK; //Already being closed
hendrikvincent 0:05ccbd4f84f1 263 m_closed = true;
hendrikvincent 0:05ccbd4f84f1 264
hendrikvincent 0:05ccbd4f84f1 265 if( !m_pPcb ) //Pcb doesn't exist (anymore)
hendrikvincent 0:05ccbd4f84f1 266 return NETTCPSOCKET_MEM;
hendrikvincent 0:05ccbd4f84f1 267
hendrikvincent 0:05ccbd4f84f1 268 //Cleanup incoming data
hendrikvincent 0:05ccbd4f84f1 269 cleanUp();
hendrikvincent 0:05ccbd4f84f1 270
hendrikvincent 0:05ccbd4f84f1 271 if( !!tcp_close( (tcp_pcb*) m_pPcb) )
hendrikvincent 0:05ccbd4f84f1 272 {
hendrikvincent 0:05ccbd4f84f1 273 DBG("LwipNetTcpSocket::close() could not close properly, abort.\n");
hendrikvincent 0:05ccbd4f84f1 274 tcp_abort( (tcp_pcb*) m_pPcb);
hendrikvincent 0:05ccbd4f84f1 275 m_pPcb = NULL;
hendrikvincent 0:05ccbd4f84f1 276 return NETTCPSOCKET_MEM;
hendrikvincent 0:05ccbd4f84f1 277 }
hendrikvincent 0:05ccbd4f84f1 278
hendrikvincent 0:05ccbd4f84f1 279 DBG("LwipNetTcpSocket::close() : connection closed successfully.\n");
hendrikvincent 0:05ccbd4f84f1 280
hendrikvincent 0:05ccbd4f84f1 281 m_pPcb = NULL;
hendrikvincent 0:05ccbd4f84f1 282 return NETTCPSOCKET_OK;
hendrikvincent 0:05ccbd4f84f1 283 }
hendrikvincent 0:05ccbd4f84f1 284
hendrikvincent 0:05ccbd4f84f1 285 NetTcpSocketErr LwipNetTcpSocket::poll()
hendrikvincent 0:05ccbd4f84f1 286 {
hendrikvincent 0:05ccbd4f84f1 287 NetTcpSocket::flushEvents();
hendrikvincent 0:05ccbd4f84f1 288 return NETTCPSOCKET_OK;
hendrikvincent 0:05ccbd4f84f1 289 }
hendrikvincent 0:05ccbd4f84f1 290
hendrikvincent 0:05ccbd4f84f1 291 // Callbacks events
hendrikvincent 0:05ccbd4f84f1 292
hendrikvincent 0:05ccbd4f84f1 293 err_t LwipNetTcpSocket::acceptCb(struct tcp_pcb *newpcb, err_t err)
hendrikvincent 0:05ccbd4f84f1 294 {
hendrikvincent 0:05ccbd4f84f1 295 if(err)
hendrikvincent 0:05ccbd4f84f1 296 {
hendrikvincent 0:05ccbd4f84f1 297 DBG("Error %d in LwipNetTcpSocket::acceptCb.\n", err);
hendrikvincent 0:05ccbd4f84f1 298 return err;
hendrikvincent 0:05ccbd4f84f1 299 }
hendrikvincent 0:05ccbd4f84f1 300 //FIXME: MEM Errs
hendrikvincent 0:05ccbd4f84f1 301 //m_lpInPcb.push(newpcb); //Add connection to the queue
hendrikvincent 0:05ccbd4f84f1 302 LwipNetTcpSocket* pNewNetTcpSocket = new LwipNetTcpSocket(newpcb);
hendrikvincent 0:05ccbd4f84f1 303
hendrikvincent 0:05ccbd4f84f1 304 if(pNewNetTcpSocket == NULL)
hendrikvincent 0:05ccbd4f84f1 305 {
hendrikvincent 0:05ccbd4f84f1 306 DBG("Not enough mem, socket dropped in LwipNetTcpSocket::acceptCb.\n");
hendrikvincent 0:05ccbd4f84f1 307 tcp_abort(newpcb);
hendrikvincent 0:05ccbd4f84f1 308 return ERR_ABRT;
hendrikvincent 0:05ccbd4f84f1 309 }
hendrikvincent 0:05ccbd4f84f1 310
hendrikvincent 0:05ccbd4f84f1 311 pNewNetTcpSocket->m_refs++;
hendrikvincent 0:05ccbd4f84f1 312 m_lpInNetTcpSocket.push( pNewNetTcpSocket );
hendrikvincent 0:05ccbd4f84f1 313
hendrikvincent 0:05ccbd4f84f1 314 // tcp_accepted(newpcb);
hendrikvincent 0:05ccbd4f84f1 315 // tcp_accepted( m_pPcb ); //Should fire proper events //WARN: m_pPcb is the GOOD param here (and not pInPcb)
hendrikvincent 0:05ccbd4f84f1 316 queueEvent(NETTCPSOCKET_ACCEPT);
hendrikvincent 0:05ccbd4f84f1 317 return ERR_OK;
hendrikvincent 0:05ccbd4f84f1 318 }
hendrikvincent 0:05ccbd4f84f1 319
hendrikvincent 0:05ccbd4f84f1 320 err_t LwipNetTcpSocket::connectedCb(struct tcp_pcb *tpcb, err_t err)
hendrikvincent 0:05ccbd4f84f1 321 {
hendrikvincent 0:05ccbd4f84f1 322 queueEvent(NETTCPSOCKET_CONNECTED);
hendrikvincent 0:05ccbd4f84f1 323 return ERR_OK;
hendrikvincent 0:05ccbd4f84f1 324 }
hendrikvincent 0:05ccbd4f84f1 325
hendrikvincent 0:05ccbd4f84f1 326 void LwipNetTcpSocket::errCb(err_t err)
hendrikvincent 0:05ccbd4f84f1 327 {
hendrikvincent 0:05ccbd4f84f1 328 DBG("NetTcpSocket %p - Error %d in LwipNetTcpSocket::errCb.\n", (void*)this, err);
hendrikvincent 0:05ccbd4f84f1 329 //WARN: At this point, m_pPcb has been freed by lwIP
hendrikvincent 0:05ccbd4f84f1 330 m_pPcb = NULL;
hendrikvincent 0:05ccbd4f84f1 331 //These errors are fatal, discard all events queued before so that the errors are handled first
hendrikvincent 0:05ccbd4f84f1 332 discardEvents();
hendrikvincent 0:05ccbd4f84f1 333 m_closed = true;
hendrikvincent 0:05ccbd4f84f1 334 cleanUp();
hendrikvincent 0:05ccbd4f84f1 335 if( err == ERR_ABRT)
hendrikvincent 0:05ccbd4f84f1 336 queueEvent(NETTCPSOCKET_CONABRT);
hendrikvincent 0:05ccbd4f84f1 337 else //if( err == ERR_RST)
hendrikvincent 0:05ccbd4f84f1 338 queueEvent(NETTCPSOCKET_CONRST);
hendrikvincent 0:05ccbd4f84f1 339 }
hendrikvincent 0:05ccbd4f84f1 340
hendrikvincent 0:05ccbd4f84f1 341 err_t LwipNetTcpSocket::sentCb(tcp_pcb* tpcb, u16_t len)
hendrikvincent 0:05ccbd4f84f1 342 {
hendrikvincent 0:05ccbd4f84f1 343 // DBG("%d bytes ACKed by host.\n", len);
hendrikvincent 0:05ccbd4f84f1 344 queueEvent(NETTCPSOCKET_WRITEABLE);
hendrikvincent 0:05ccbd4f84f1 345 return ERR_OK;
hendrikvincent 0:05ccbd4f84f1 346 }
hendrikvincent 0:05ccbd4f84f1 347
hendrikvincent 0:05ccbd4f84f1 348 err_t LwipNetTcpSocket::recvCb(tcp_pcb* tpcb, pbuf *p, err_t err)
hendrikvincent 0:05ccbd4f84f1 349 {
hendrikvincent 0:05ccbd4f84f1 350 //Store pbuf ptr
hendrikvincent 0:05ccbd4f84f1 351 // DBG("Receive CB with err = %d & len = %d.\n", err, p->tot_len);
hendrikvincent 0:05ccbd4f84f1 352 // tcp_recved( (tcp_pcb*) m_pPcb, p->tot_len); //Acknowledge the reception
hendrikvincent 0:05ccbd4f84f1 353
hendrikvincent 0:05ccbd4f84f1 354 if(err)
hendrikvincent 0:05ccbd4f84f1 355 {
hendrikvincent 0:05ccbd4f84f1 356 queueEvent(NETTCPSOCKET_ERROR);
hendrikvincent 0:05ccbd4f84f1 357 return ERR_OK; //FIXME: More robust error handling there
hendrikvincent 0:05ccbd4f84f1 358 }
hendrikvincent 0:05ccbd4f84f1 359 else if(!p)
hendrikvincent 0:05ccbd4f84f1 360 {
hendrikvincent 0:05ccbd4f84f1 361 DBG("NetTcpSocket %p - Connection closed by remote host (LwipNetTcpSocket::recvCb).\n", (void*)this);
hendrikvincent 0:05ccbd4f84f1 362 //Buf is NULL, that means that the connection has been closed by remote host
hendrikvincent 0:05ccbd4f84f1 363
hendrikvincent 0:05ccbd4f84f1 364 //FIX: 27/05/2010: We do not want to deallocate the socket while some data might still be readable
hendrikvincent 0:05ccbd4f84f1 365 //REMOVED: close();
hendrikvincent 0:05ccbd4f84f1 366
hendrikvincent 0:05ccbd4f84f1 367 //However we do not want to close the socket yet
hendrikvincent 0:05ccbd4f84f1 368
hendrikvincent 0:05ccbd4f84f1 369 queueEvent(NETTCPSOCKET_DISCONNECTED);
hendrikvincent 0:05ccbd4f84f1 370 return ERR_OK;
hendrikvincent 0:05ccbd4f84f1 371 }
hendrikvincent 0:05ccbd4f84f1 372
hendrikvincent 0:05ccbd4f84f1 373 //We asserted that p is a valid pointer
hendrikvincent 0:05ccbd4f84f1 374
hendrikvincent 0:05ccbd4f84f1 375 //New data processing
hendrikvincent 0:05ccbd4f84f1 376 tcp_recved( tpcb, p->tot_len); //Acknowledge the reception
hendrikvincent 0:05ccbd4f84f1 377 if(!m_pReadPbuf)
hendrikvincent 0:05ccbd4f84f1 378 {
hendrikvincent 0:05ccbd4f84f1 379 m_pReadPbuf = p;
hendrikvincent 0:05ccbd4f84f1 380 queueEvent(NETTCPSOCKET_READABLE);
hendrikvincent 0:05ccbd4f84f1 381 }
hendrikvincent 0:05ccbd4f84f1 382 else
hendrikvincent 0:05ccbd4f84f1 383 {
hendrikvincent 0:05ccbd4f84f1 384 pbuf_cat((pbuf*)m_pReadPbuf, p); //m_pReadPbuf is not empty, tail p to it and drop our ref
hendrikvincent 0:05ccbd4f84f1 385 //No need to queue an event in that case since the read buf has not been processed yet
hendrikvincent 0:05ccbd4f84f1 386 }
hendrikvincent 0:05ccbd4f84f1 387 return ERR_OK;
hendrikvincent 0:05ccbd4f84f1 388 }
hendrikvincent 0:05ccbd4f84f1 389
hendrikvincent 0:05ccbd4f84f1 390
hendrikvincent 0:05ccbd4f84f1 391 void LwipNetTcpSocket::cleanUp() //Flush input buffer
hendrikvincent 0:05ccbd4f84f1 392 {
hendrikvincent 0:05ccbd4f84f1 393 //Ensure that further error won't be followed to this inst (which can be destroyed)
hendrikvincent 0:05ccbd4f84f1 394 if( m_pPcb )
hendrikvincent 0:05ccbd4f84f1 395 {
hendrikvincent 0:05ccbd4f84f1 396 tcp_arg( (tcp_pcb*) m_pPcb, (void*) NULL );
hendrikvincent 0:05ccbd4f84f1 397 tcp_recv( (tcp_pcb*) m_pPcb, NULL );
hendrikvincent 0:05ccbd4f84f1 398 tcp_sent((tcp_pcb*) m_pPcb, NULL );
hendrikvincent 0:05ccbd4f84f1 399 tcp_err( (tcp_pcb*) m_pPcb, NULL );
hendrikvincent 0:05ccbd4f84f1 400 }
hendrikvincent 0:05ccbd4f84f1 401
hendrikvincent 0:05ccbd4f84f1 402 if( m_pReadPbuf )
hendrikvincent 0:05ccbd4f84f1 403 {
hendrikvincent 0:05ccbd4f84f1 404 DBG("Deallocating unread data.\n");
hendrikvincent 0:05ccbd4f84f1 405 pbuf_free((pbuf*)m_pReadPbuf); //Free all unread data
hendrikvincent 0:05ccbd4f84f1 406 m_pReadPbuf = NULL;
hendrikvincent 0:05ccbd4f84f1 407 recv(NULL,0); //Update recv ptr position
hendrikvincent 0:05ccbd4f84f1 408 }
hendrikvincent 0:05ccbd4f84f1 409 }
hendrikvincent 0:05ccbd4f84f1 410
hendrikvincent 0:05ccbd4f84f1 411 // Static callbacks from LwIp
hendrikvincent 0:05ccbd4f84f1 412
hendrikvincent 0:05ccbd4f84f1 413 err_t LwipNetTcpSocket::sAcceptCb(void *arg, struct tcp_pcb *newpcb, err_t err)
hendrikvincent 0:05ccbd4f84f1 414 {
hendrikvincent 0:05ccbd4f84f1 415 LwipNetTcpSocket* pMe = (LwipNetTcpSocket*) arg;
hendrikvincent 0:05ccbd4f84f1 416 return pMe->acceptCb( newpcb, err );
hendrikvincent 0:05ccbd4f84f1 417 }
hendrikvincent 0:05ccbd4f84f1 418
hendrikvincent 0:05ccbd4f84f1 419 err_t LwipNetTcpSocket::sConnectedCb(void *arg, struct tcp_pcb *tpcb, err_t err)
hendrikvincent 0:05ccbd4f84f1 420 {
hendrikvincent 0:05ccbd4f84f1 421 LwipNetTcpSocket* pMe = (LwipNetTcpSocket*) arg;
hendrikvincent 0:05ccbd4f84f1 422 return pMe->connectedCb( tpcb, err );
hendrikvincent 0:05ccbd4f84f1 423 }
hendrikvincent 0:05ccbd4f84f1 424
hendrikvincent 0:05ccbd4f84f1 425 void LwipNetTcpSocket::sErrCb(void *arg, err_t err)
hendrikvincent 0:05ccbd4f84f1 426 {
hendrikvincent 0:05ccbd4f84f1 427 if( !arg )
hendrikvincent 0:05ccbd4f84f1 428 {
hendrikvincent 0:05ccbd4f84f1 429 DBG("NetTcpSocket - Error %d in LwipNetTcpSocket::sErrCb.\n", err);
hendrikvincent 0:05ccbd4f84f1 430 return; //The socket has been destroyed, discard error
hendrikvincent 0:05ccbd4f84f1 431 }
hendrikvincent 0:05ccbd4f84f1 432 LwipNetTcpSocket* pMe = (LwipNetTcpSocket*) arg;
hendrikvincent 0:05ccbd4f84f1 433 return pMe->errCb( err );
hendrikvincent 0:05ccbd4f84f1 434 }
hendrikvincent 0:05ccbd4f84f1 435
hendrikvincent 0:05ccbd4f84f1 436 err_t LwipNetTcpSocket::sSentCb(void *arg, struct tcp_pcb *tpcb, u16_t len)
hendrikvincent 0:05ccbd4f84f1 437 {
hendrikvincent 0:05ccbd4f84f1 438 LwipNetTcpSocket* pMe = (LwipNetTcpSocket*) arg;
hendrikvincent 0:05ccbd4f84f1 439 return pMe->sentCb( tpcb, len );
hendrikvincent 0:05ccbd4f84f1 440 }
hendrikvincent 0:05ccbd4f84f1 441
hendrikvincent 0:05ccbd4f84f1 442 err_t LwipNetTcpSocket::sRecvCb(void *arg, struct tcp_pcb *tpcb, struct pbuf *p, err_t err)
hendrikvincent 0:05ccbd4f84f1 443 {
hendrikvincent 0:05ccbd4f84f1 444 if( tpcb->flags & TF_RXCLOSED )
hendrikvincent 0:05ccbd4f84f1 445 {
hendrikvincent 0:05ccbd4f84f1 446 //The Pcb is in a closing state
hendrikvincent 0:05ccbd4f84f1 447 //Discard that data here since we might have destroyed the corresponding socket object
hendrikvincent 0:05ccbd4f84f1 448 tcp_recved( tpcb, p->tot_len);
hendrikvincent 0:05ccbd4f84f1 449 pbuf_free( p );
hendrikvincent 0:05ccbd4f84f1 450 return ERR_OK;
hendrikvincent 0:05ccbd4f84f1 451 }
hendrikvincent 0:05ccbd4f84f1 452 LwipNetTcpSocket* pMe = (LwipNetTcpSocket*) arg;
hendrikvincent 0:05ccbd4f84f1 453 return pMe->recvCb( tpcb, p, err );
hendrikvincent 0:05ccbd4f84f1 454 }
hendrikvincent 0:05ccbd4f84f1 455
hendrikvincent 0:05ccbd4f84f1 456 #endif