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19 The uIP TCP/IP stack is intended to make it possible to communicate using the TCP/IP protocol suite…
29 … the Internet. For embedded systems, being able to run native TCP/IP makes it possible to connect …
30 … kilobytes and RAM requirements of several hundreds of kilobytes have made it impossible to fit th…
31 … only the absolute minimal set of features needed for a full TCP/IP stack. It can only handle a si…
32 …lementation running on a workstation-class machine. Under this assumption, it is possible to remov…
35 TCP provides a reliable byte stream to the upper layer protocols. It breaks the byte stream into ap…
44 …The input handler function will never block, but will return at once. When it returns, the stack o…
45 …ns. When the main control loop infers that the periodic timer should fire, it should invoke the ti…
49 …is checksum is made over all bytes in every packet being sent and received it is important that th…
50 While uIP includes a generic checksum function, it also leaves it open for an architecture specific…
56 …it uses a single global buffer for holding packets and has a fixed table for holding connection st…
57 …he TCP/IP headers of outgoing data. If the application sends dynamic data, it may use the parts of…
58 …e simultaneous clients, will require more RAM than a simple Telnet server. It is possible to run t…
60 … Windows WinSock API. Because the socket API uses stop-and-wait semantics, it requires support fro…
66 …for new data. The application program provides only one callback function; it is up to the applica…
67 uIP is different from other TCP/IP stacks in that it requires help from the application when doing …
68 …it calls the application with a flag set indicating that a retransmission is required. The applica…
76 …eiver. The amount of buffer space is dictated by the memory configuration. It is therefore possibl…
78 The application can send only one chunk of data at a time on a connection and it is not possible to…
81 …it is important to note that even though the actual retransmission operation is carried out by the…
88 …"a00147.html#g58bb90796c1cdad3aac2ecf44d87b20e">uip_poll()</a> to check if it is being polled by u…
114 …a connection has been established, the application replies to all data sent to it by saying "ok"<p>
126 …it was called. If the application was called because the remote end has sent it data, it responds …
129 …ilar to the first application in that it listens to a port for incoming connections and responds t…
131 …ng as the "Welcome!" message has not been acknowledged by the remote host, it might have been drop…
132 …it's state to WELCOME-SENT. When the welcome message is acknowledged, the application moves to the…
133 …it looks at in which state the application is. If the application is in the WELCOME-SENT state, it…
197 …on that connects to a host, sends an HTTP request for a file and downloads it to a slow device suc…
225 …nt, the application knows that if it needs to retransmit any data, it is that request that should …
226 …eceives new data from the remote host, it sends this data to the device by using the function devi…
227 …56852ccfccbbad6c5d8">uip_stop()</a>. The application can then be sure that it will not receive any…
273 When writing larger programs using uIP it is useful to be able to utilize the uIP API in a structur…
303 … if the connection has been closed, the closed() function is called to the it deal with the event.…
304 …ished, such as intializing the application state for the connection. Since it may be the case that…
368 …It then checks if the "textlen" variable now is zero, which indicates that all data now has been s…
369 Finally, the senddata() function takes care of actually sending the data that is to be sent. It is …
370 It is important to note that the senddata() function never should affect the application state; thi…
372 …tly defined. While the layered approach is a good way to design protocols, it is not always the be…
386 … the connection state is updated and the application is informed, allowing it to send out new data…
391 … arithmetic is fairly expensive on most 8-bit CPUs, uIP does not implement it. Also, uIP does not …
392 It is important to note that even though most TCP implementations use the sliding window algorithm,…
395 …mplemented using TCP's periodic timer. Each time the periodic timer fires, it increments a counter…
398 …it calls the application with a flag set indicating that a retransmission is required. The applica…
401 …can buffer. And application cannot send more data than the amount of bytes it is allowed to send b…
406 …mark parts of the data stream as being more urgent than the normal stream. It is up to the receivi…
407 …urgent data feature increases the complexity of the implementation because it requires an asynchro…
414 … algorithm. Because the receiver only receives a single segment at a time, it will wait as much as…
416 It should be noted, however, that since small systems running uIP are not very likely to have large…