// @brief Send post request
// @param string uri the request uri
// @return If no error occurs returns the number of receive data in bytes,
// Otherwise -1 is returns
int HTTPClient::post( string uri, Chars &body )
{
string str;
m_method = "POST";
str += "POST " + uri + " " + m_version;
str += "\r\n";
str += "Host: " + m_host;
str += "\r\n";
map<string, string>::iterator iter = m_requestHeader.begin();
while (iter != m_requestHeader.end()) {
str += iter->first + ": ";
str += iter->second;
str += "\r\n";
++iter;
}
// Set 'Content-length'
str += "Content-Length: ";
char buf[25];
snprintf(buf, 25, "%ld", body.length());
str += buf;
str += "\r\n";
// Headers end
str += "\r\n";
Chars data;
data.assign(str.c_str(), str.length());
data.append(body.c_str(), body.length());
if (!isBlocking()) {
setBlocking();
}
// Set receive and send timeout to 5 seconds
int nTimeout = 5000;
if (m_host == "127.0.0.1") {
nTimeout = 100;
}
setRcvTimeout(nTimeout);
setSndTimeout(nTimeout);
int n = this->send(data.c_str(), data.length());
if (n == -1) {
return n;
}
//this->shutdown(SHUT_WD);
/**
* Receive response data
*/
// Receive all response data to socket buffer including HTTP headers
while ( this->recv(1024) > 0 )
;
return decodeHttpData();
}
// @brief 获取Chars的一部分
// @param beg 开始索引, size 指定大小
// @return 切割后的Chars
Chars Chars::substr(size_t beg, size_t size)
{
Chars ch;
if (isEmpty() || beg > m_length ) {
// Return an empty Chars
return ch;
}
char *s = new char[size];
if (s == NULL) {
return ch;
}
char *b = m_data + beg;
if (beg + size > m_length) {
size = m_length - beg;
}
memcpy(s, b, size);
ch.assign(s, size);
delete[] s;
return ch;
}
