交互协议

Ⅰ webservice怎么实现基于http协议post交互

HTTP：一种详细复规定了浏览制器和万维网服务器之间互相通信的规则,通过因特网传送万维网文档的数据传送协议.
TCP：Transmission Control Protocol 传输控制协议TCP是一种面向连接（连接导向）的、可靠的、基于字节流的运输层（Transport layer）通信协议,由IETF的RFC 793说明（specified）.
UDP：是User Datagram Protocol的简称,中文名是用户数据报协议,是 OSI 参考模型中一种无连
接的传输层协议,提供面向事务的简单不可靠信息传送服务,IETF RFC 768是UDP的正式规范.
IP：是英文Internet Protocol（网络之间互连的协议）的缩写,中文简称为“网协”,也就是为计算机网络相互连接进行通信而设计的协议.

Ⅱ OSPF路由协议包文交互过程

ospf是个内部网关协议,也就是说它是在一个自治系统(AS)内部使用的
如果你要使用ospf协议的路由器跟别的AS内部的路由器发送数据包,那就要通过必须通过自治系统边界路由器来转发,自治系统边界路由器只是主干区域area0的哦
一个AS分成多个区域,其中有一个主干区域,和若干个从区域
如果是不同区域间传输数据,它们的数据也必须要通过区域边界路由器转发,区域边界路由器是每个区域都有的,用于区域间的数据中转
每台路由器都要建立并维护一个本区域内部的链路状态数据库,发送数据前,它会根据数据库计算出最短开销的路径.然后通过那条路径开始传输咯

Ⅲ javascript和erlang怎么交互协议

Running Concurrently

Running a JavaScript function in the background is easy with Er.js:
Er.spawn(myBackgroundFunction);

Er.spawn starts a new Er.js process running
myBackgroundFunction, and returns its process id.

Because processes are really coroutines, you have to call yield
before any function which might block. Calling yield will create a
continuation trampoline that can be rerun by Er.js when it’s time for the
process to continue executing. For example:
function myBackgroundFunction() {
// Wait for 4 seconds
yield Er.sleep(4000);
// Do other things…
}

Sending Messages

In Erlang and Er.js, each process has a built-in message queue that other
processes use to send it messages. Posting to the message queue never blocks
the caller, and the destination process for the message can read them off the
queue whenever it wants. Messages are just regular associative arrays, similar
to hashtables, which are easy to create in JavaScript. For example:
Er.send(myPid, { Hello: new Date(), From: Er.pid() });

Here, myPid is assumed to be the process id from some former
call to Er.spawn. This call sends a message with the keys
“Hello” and “From”. Hello is a
Date object with the current date, and From is the
process id of the current process, which can always be fetched with
Er.pid(). Passing the current pid means the myPid
process can send us messages in return, since we’ve told it who we
are.

Receiving & Pattern Matching

When myBackgroundFunction wants to read off its message queue,
it calls the Er.receive function, telling it the kind of message
it’s interested in, and a function to call when such a message is
received. Interest in a message is expressed using a message pattern which,
just like the messages themselves, is a simple hash table.
yield Er.receive({ Hello: Date, From: _ }, // pattern
function(msg) { // handler
log(”Hello=” + msg.Hello);
log(”From=” + msg.From);
});

This matches any message in the current process’s queue which has a
Hello key with a Date object as the value, and with a
From key with any value. Explicit value matching for e.g. number
and string literals and DOM elements is also possible. The “_” for
the From key means that any value is accepted. There are a few
other matching rules as well that make this a very powerful but simple message
dispatching mechanism.

If a message in the process queue matches a pattern passed to
Er.receive, it is passed to the handler function found in the
argument list following the pattern. The handler can look up the key values it
needs in order to act on the message. It can also send messages to other
processes, spawn new processes, receive queued messages or perform other work.

Because the Er.receive call doesn’t finish until a message
matching one of patterns is received and handled, we put a yield in
front of the call to avoid blocking other processes.

Linked Processes

When a process finishes or exits, it automatically sends a message to any
processes which link to it. Linking is done by passing a pid to
Er.link. The sent message is of the form:
{ Signal: Er.Exit, From: exiting_pid, Reason: reason }

The Reason value comes either from the exiting process calling
Er.exit(reason), or just throw'ing the reason as an
exception. If the linking process does not handle this message, it will exit
itself, sending exit messages to its own linked processes. This allows for
simple process chaining and failure handling.

Message Multicast

Er.js processes can also register to receive messages sent to a given name,
using Er.register(name). Registered names can be passed as the
first argument to Er.send. Multiple processes can register for the
same name, and they will all receive a message sent to that name, allowing for
simple multi-casting.

Concurrent AJAX with Er.Ajax

XmlHttpRequest, AJAX and JSON integrate nicely with the process and
message-passing model, allowing processes to avoid asynchronous JavaScript and
callbacks.

Instead, using message-passing and concurrency, Er.js makes network access
transparent, without blocking other processes or interactivity:
var txt = yield Er.Ajax.get("http://beatniksf.com/erjs/index.html");
alert("Fetched Content: " + txt);

Under the covers, this is accomplished using Er.Ajax.start,
which handles asynchronous XmlHttpRequest internals and uses
Er.send to tell the current process about download progress and
completion.

Er.Ajax.get and others (post, json,
etc) are implemented by yielding execution until the final message from
Er.Ajax.start is received. If the message indicates success, the
response text is returned to the caller, otherwise the failure message is
thrown:
function myGet(url) {
Er.Ajax.start(url);
yield Er.receive({ Url: url, Success: true, Text: String, _:_ },
function(msg) { return msg.Text; },
{ Url: url, Success: false, Text: String, _:_ },
function(msg) { throw msg; });
}

Er.DOM Event Handling

As with remote resources, Er.js can concurrently listen for DOM Events, and
once received insert them into the listening process's message queue. The
following demonstrates a simple wrapper, Er.DOM.Receive, which
subscribes to a named event on a DOM element and calls Er.receive
to await its delivery:
var event = yield Er.DOM.receive(document, "click");

Note: The best approach to handling DOM manipulation and eventing with Er.js
is still under investigation. For instance, document above might
alternately refer to an an element's id or multiple elements using a CSS
selector.

Future Work

Er.js will wrap certain long-running asynchronous JavaScript calls in
synchronous yielding wrappers so that processes can avoid convoluted
asynchronous code.

JSON-based Remote Procere Calls
Like Erlang itself, Er.js will enable easy interaction with concurrent processes
running on remote nodes. Using JSON and XML, messages can be sent to and
received from remote servers using the same API as locally running concurrent
processes:

var rpc = Er.spawn("http://www.beatniksoftware.com/echo");
...
Er.send(rpc, { Echo: "This is the echo payload" });
yield Er.receive({ EchoResponse: String },
function (msg) {
alert("Got Echo response: " + msg.EchoResponse);
});

Ⅳ 两个实时交互比较多的系统，使用什么协议做连接

题主可以看下zeromq框架，zmq包含了PULL和PUSH模式，采用异步io通信方式并对上层屏蔽通信细节，参考资料： 传送门

Ⅳ android前后台交互用到什么协议

如果后台Http 可以用 HttpClient把 模拟 get/post提交

Ⅵ 3. LTE基站与核心网网元之间的信令交互为什么采用SCTP协议来承载能否使用TCP或UDP协议来承载为什么

同学你好，我是马老师，下课来我办公室一趟

Ⅶ lte中nas协议用于哪些信令交互

1、LTE中，SRB（signalling radio bearers—信令无线承载）作为一种特殊的无线承载（RB），其仅仅用来传输RRC和NAS消息，在协议.331中，定义了SRBs的传输信道：——SRB0用来传输RRC消息，在逻辑信道CCCH上传输——SRB1用来传输RRC消息（也许会包含piggybacked NAS消息），在SRB2承载的建立之前，比SRB2具有更高的优先级。在逻辑信道DCCH上传输.——SRB2用来传输NAS消息，比SRB1具有更低的优先级，并且总是在安全模式激活之后才配置SRB2。在逻辑信道DCCH上传输.下行piggybacked NAS消息仅仅使用在附着过程（例如连接成功/失败）：承载的建立/修改/释放。上行的piggybacked NAS消息在连接建立期间初始化NAS消息（也就是发起连接建立，MSG3）注：通过SRB2传输NAS消息也是被包含在RRC消息中的，但是这些NAS消息不包括任何RRC协议控制信息，只是在RRC消息传输的时候包含在RRC中，相当于此时RRC是一个载体的形式。一旦安全模式被激活，所有SRB1和SRB2的RRC消息（包括某些NAS或者3GPP消息），都会通过PDCP来进行完整性保护和加密，NAS只是单独对NAS消息进行完整性保护和加密。换句话说，LTE存在的2层加密和保护：NAS只进行控制信令的加密工作，而PDCP同时进行控制平面和数据平面的完保和加密工作，SRB2的使用还要注意联系一点就是：它是建立在专用承载基础上的，使用DCCH逻辑信道注：在LTE里面，SRB有三个，SRB0对应的是CCCH，在信令建立过程中不需要建立，对SRB1，SRB2，会在RRCconnectionsetup和RRCReconfig消息里面进行配置rrcConnectionReqest是在SRB0上传输的， SRB0一直存在， 用来传输映射到CCCH 的RRC信令。UE收到NodeB的rrcConnectionSetup信令后，UE和NodeB之间的SRB1就建立起来了。eNodeB向UE发送RRCConnectionReconfiguration 消息，建立SRB2和DRB对DRB，确实在RRC协议里面对应的逻辑信道是5个比特，但去看DRB的取值它是从3到11的，总共8个，这里的逻辑信道的ID只是比特位上的对应，在MAC层标识DRB，两个ID的数值有可能相同，也可以不同。所以最多总共有3个SRB，8个DRB。2、在无线承载中有两种，一种是数据承载称为DRB，一种是信令承载称为SRB。SRB一共有3中分别为SRB0、SRB1、SRB2。SRB0其实对应的是公共控制信道，是不属于某个用户的。是在小区建了好就会建了的。后两种信令承载是对应专用控制信道的，是对应用户的。SRB1在RRC建立过程完（rrc connection setup）。SRB2和DRB在E-RAB指派阶段完成（rrc connection reconfigurationlte中nas协议用于哪些信令交互

Ⅷ 在客户端与web服务交互中，消息是如何封装的，采用的是什么协议

可以这样理解

手机的 客户端 需要的一些数据需要从腾讯的 服务器上下载
也可以看成上传文件 下载文件
重在自己把意思理解到就行 代码 还有格式

Ⅸ 请教安卓客户端与服务器之间交互的协议

协议肯定是根据需求来定的，比如登陆，client需要给server传哪些数据，而server在各种情况下，返回什么样的数据。这个别人肯定帮不上你的。你自己要弄懂。还有交互方式 等等。 查看更多答案>>

Ⅹ 什么是交互式协议

交互式协议是指主机之间对多种协议进行交互的一种协议。主机之间要成功地专进行通信，属多种协议必须进行交互。这些协议是在每台主机和网络设备加载的软件和硬件中实现的。
协议之间的交互被称为协议栈。协议栈以分层结构表示协议，每个上层协议都依赖于下层协议提供的服务。